| |
| 2. Banner ± 3 mm; flowers early dense, ascending, then well separated, reflexed; fruit reflexed, 2.84.2 mm, width > depth fruits overlapping, ovate or ± round in top view common |
| A. gambelianus |
| 2' Banner generally > 3 mm; flowers remaining dense, erect if banner ± 3 mm, otherwise erect, spreading, or reflexed; fruit generally > 4 mm, if not then width ± = or < depth |
| |
| 3. Flower, fruit strongly ascending, in dense, head-like racemes; fruit 24 mm, 2-lobed in X-section, 2-chambered |
| A. didymocarpus |
| 3' Flower, fruit often ascending early, then spreading or reflexed, often in loose racemes; fruit > 4 mm, generally unlobed in X-section, 12-chambered |
| |
| 4. Inflorescence 1040-flowered; fruit inflated, papery, 1-chambered, 417 mm wide, sides generally strongly convex |
| |
| 5. Corolla generally white; flowers, fruits in dense, oblong or subspheric, head-like racemes |
| 2 A. hornii var. hornii |
| 5' Corolla generally pink-purple; flowers early dense, then ± well separated, fruits loosely clustered in elongate racemes |
| 2 A. palmeri |
| 4' Inflorescence 214-flowered; fruit narrow, ± 2-chambered, < 4 mm wide, sides parallel or slightly convex |
| |
| 6. Plant silvery-canescent; local, Cushenbury Canyon (ne San Bernardino Mountains, adjacent Mojave Desert) |
| 2 A. albens |
| 6' Plant greenish, ± hairy; widespread, not of Cushenbury Canyon |
| |
| 7. Fruit body 510 mm, tapered to spine-like or hooked beak ± = body; immature seeds 26; fruits in head- or umbel-like racemes |
| A. breweri |
| 7' Fruit body > 10 mm or beak < 1/4 × body; immature seeds 520; fruits in sometimes head- or umbel-like racemes |
| |
| 8. Keel > wings; fruit base stalk-like, receptacle with peg-like extension (evident in calyx after fruit drop) |
| A. clarianus |
| 8' Keel < wings; fruit base sometimes ± stalk-like, receptacle without peg-like extension |
| |
| 9. Inflorescence 27-flowered, open, axis in fruit 720 mm; fruit blushed or ± purple-mottled |
| A. pauperculus |
| 9' Inflorescence 212-flowered, ± dense, axis in fruit 18 mm; fruit green, maturing straw-colored or black |
| |
| 10. Fruit on erect peduncles; seeds pitted; North Coast Ranges |
| A. rattanii vars. |
| 10' Fruit on spreading or reflexed peduncles; seeds smooth; Great Central Valley, Central Coast, San Francisco Bay Area, South Coast |
| A. tener vars. |
| |
| 11. Hairs forked at base; corolla cream; fruit erect; Modoc Plateau, n East of Sierra Nevada (possibly adjacent California Floristic Province) |
| A. canadensis var. brevidens |
| 11' Hairs simple; corolla often pink-purple, white, or yellow; fruit erect to reflexed; often not of Modoc Plateau, n East of Sierra Nevada, and adjacent California Floristic Province |
| |
| 12. Calyx 1012 mm, base with pouch on upper side; flowers reflexed petals dull yellow; fruit hanging from stalk-like base; n High Sierra Nevada |
| A. gibbsii |
| 12' Calyx generally < 10 mm, base generally ± symmetric, without pouch; flowers ascending or spreading if calyx > 10 mm |
| |
| 13. Terminal leaflet not or only obscurely jointed to midrib, joint unlike that of lateral leaflet; lateral leaflets often reduced or 0, spaces between generally >> 1.5 × leaflet width; leaves few, sparse |
| |
| 14. Calyx 810 mm; petals whitish; fruit ± 4-sided |
| 2 A. bicristatus |
| 14' Calyx 45 mm; petals reddish pink and yellow; fruit 2-sided |
| A. inversus |
| 13' Terminal leaflet clearly jointed to midrib, joint like that of lateral leaflet; lateral leaflets present, spaces between rarely > 1.5 × leaflet width; leaves generally many, not sparse |
| |
| 15. Plant tufted or matted; stem < 15 cm (generally much shorter), from crown at surface; hairs dense, plant grayish or silvery; flowers strongly ascending |
| |
| 16. Banner, wings hairy on outside; fruit 57 mm, ± included in calyx |
| A. austiniae |
| 16' Banner, wings glabrous on outside; fruit > 7 mm, well exserted from calyx |
| |
| 17. Calyx 46 mm; fruit 3-sided, < 4 mm wide; hairs of stem, leaf sparse, ± straight, generally < 0.5 mm |
| A. obscurus |
| 17' Calyx 614 mm; fruit swollen, ± round or 2-lobed in X-section, > 4 mm wide; hairs of stem, leaf dense, curly, often > 0.5 mm |
| |
| 18. Fruit hairs generally > 1.5 mm, completely hiding surface |
| A. purshii vars. |
| 18' Fruit hairs rarely > (generally <<) 1 mm, sometimes not hiding surface |
| |
| 19. Petals whitish, with some lilac, banner 1113.3 mm; fruit 815 mm; leaflets 713 |
| A. subvestitus |
| 19' Petals pink-purple, banner 1618.5 mm; fruit 1325 mm; leaflets 719 |
| A. leucolobus |
| 15' Plant generally open; stem generally > 15 cm, generally from crown at or sometimes below surface; if plant low and tufted then flowers ultimately spreading or reflexed, or hairs sparse, or both |
| |
| 20. Lower stipules fused around stem into sheath, (sometimes very low and ± inconspicuous or ruptured early and seemingly not fused) |
| |
| 21. Leaflets of at least some leaves > 22; petals ± white or cream |
| |
| 22. Banner 710 mm; fruit 611 mm, beak long, slender, hooked |
| A. pycnostachyus vars. |
| 22' Banner 1019 mm (slightly shorter when dry); fruit often > 11 mm, beak not long, not hooked |
| |
| 23. Plant grayish-white-woolly; stipules finely tomentose; Channel Islands |
| A. miguelensis |
| 23' Plant greenish even if hairy; stipules generally glabrous or sparsely hairy, sometimes densely strigose; Channel Islands or mainland |
| |
| 24. Fruit base not stalk-like; stems not more densely hairy than leaves; generally coastal |
| A. nuttallii vars. |
| 24' Fruit base stalk-like; stems sometimes more densely hairy than leaves; often non-coastal |
| |
| 25. Flowers early spreading, then quickly reflexed; stalk-like fruit base 540 mm, ± strigose |
| |
| 26. Stalk-like fruit base 1440 mm |
| A. asymmetricus |
| 26' Stalk-like fruit base 517 mm |
| 2 A. trichopodus vars. |
| 25' Flowers early ascending or spreading, then often reflexed; stalk-like fruit base 212 mm, glabrous, strigose, or shaggy |
| |
| 27. Stalk of ovary, fruit with ± wavy, ± ascending hairs; lower stipules sometimes densely shaggy |
| A. oxyphysus |
| 27' Stalk of ovary, fruit glabrous or sparsely strigose; lower stipules ± glabrous or sparsely shaggy |
| |
| 28. Stalk-like fruit base 512 mm, jointed at base; fruit ± 2-lobed in X-section, 2-chambered; High Sierra Nevada |
| 2 A. bolanderi |
| 28' Stalk-like fruit base 26 mm, jointed at top; fruit ± round in X-section, 1-chambered; s Central Coast, w South Coast Ranges, n Channel Islands |
| A. curtipes |
| 21' Leaflets generally < 22; petals white, cream, pinkish, or purplish |
| |
| 29. Stalk-like fruit base at least 2 mm |
| |
| 30. Fruit ± narrowly oblong in side view, strongly compressed side-to-side, hairy |
| |
| 31. Calyx tube 5.27 mm, hairs ± spreading, wavy; fruit body 2743 mm |
| A. californicus |
| 31' Calyx tube 33.5 mm, hairs ± appressed; fruit body 1730 mm |
| 2 A. filipes |
| 30' Fruit widely oblong, ovoid, or roundish in side view, swollen, often glabrous |
| |
| 32. Fruit bladdery, thinly papery |
| A. whitneyi vars. |
| 32' Fruit swollen, often ± inflated, but not bladdery, not thinly papery |
| |
| 33. Fruit body stiffly leathery or ± woody when dry, pendent on a down-curved stalk-like base, 1-chambered |
| 2 A. bicristatus |
| 33' Fruit body stiffly papery when dry, erect or ± spreading, at angle on ascending to ± reflexed stalk-like base, 2-chambered |
| 2 A. bolanderi |
| 29' Stalk-like fruit base 0 or < 2 mm |
| |
| 34. Calyx 813 mm; banner 1419 mm |
| |
| 35. Flowers spreading, 1030 per inflorescence |
| 2 A. sepultipes |
| 35' Flowers ascending to ± spreading, 614 per inflorescence |
| A. webberi |
| 34' Calyx < 9 mm; banner 5.214 (generally < 12) mm |
| |
| 36. Stem 110 cm, from crown below surface; fruit swollen but not bladdery, walls becoming stiffly papery or leathery |
| |
| 37. Inflorescence 717-flowered; peduncle ± stout, hairs spreading; s High Sierra Nevada, n Tehachapi Mountain Area, 17501900 m |
| 2 A. ertterae |
| 37' Inflorescence 28-flowered; peduncle ± thread-like, hairs appressed; s High Sierra Nevada, 34003450 m |
| A. ravenii |
| 36' Stem > 10 cm, generally from crown at surface (135 cm if from crown below surface); fruit bladdery with thinly papery walls or swollen with stiffly papery or leathery walls |
| |
| 38. Fruit 1-chambered; crown below surface |
| |
| 39. Stem ± prostrate; fruit bladdery, blunt at both ends, 1020 mm |
| A. pulsiferae vars. |
| 39' Stem decumbent to ascending; fruit narrow, ± 3-sided near base, tapered at both ends, 1331 mm |
| A. shevockii |
| 38' Fruit 2-chambered; crown at surface |
| |
| 40. Inflorescence 510-flowered; fruit 59 mm |
| A. lentiformis |
| 40' Inflorescence 1226-flowered; fruit 1018 mm |
| A. andersonii |
| 20' Lower stipules not fused into sheath or sometimes fused into a sheath around stem but ruptured early and seemingly not fused (see 20.) (underground stipules, if present, sometimes fused) |
| |
| 41. Stalk-like fruit base > 3 mm; corolla white to yellow |
| |
| 42. Channel Islands (San Nicolas, Santa Barbara, San Clemente islands), fruit ± 2-chambered, not bladdery lower side of fruit grooved; leaves softly hairy |
| |
| 43. Banner 10.612.7 mm; ovary, fruit glabrous |
| A. nevinii |
| 43' Banner 14.217.5 mm; ovary, fruit hairy |
| A. traskiae |
| 42' Mainland, if insular then fruit 1-chambered, bladdery |
| |
| 44. Flowers, fruits strongly ascending; leaflets linear or linear-oblong, upper side silvery-strigose, lower less densely strigose, greenish or grayish; leaves few, sparse plant bushy, stems wiry |
| A. pachypus vars. |
| 44' Flowers, fruits spreading to reflexed; leaflets linear-lanceolate to widely obovate, both sides greenish or ± gray-strigose; leaves many, not sparse |
| |
| 45. Inflorescence 715-flowered; fruit fleshy; Klamath Ranges, Cascade Range Foothills |
| A. accidens var. hendersonii |
| 45' Inflorescence 1065-flowered; fruit papery; not of Klamath Ranges, Cascade Range Foothills |
| |
| 46. Stalk-like fruit base spreading-, wavy-hairy |
| A. oxyphysus |
| 46' Stalk-like fruit base strigose or ± glabrous |
| |
| 47. Leaflets 919; fruit strongly compressed side-to-side |
| 2 A. filipes |
| 47' Leaflets 1539; fruit strongly compressed side-to-side to swollen and bladdery |
| 2 A. trichopodus vars. |
| 41' Stalk-like fruit base 0 or < 3 mm; corolla white to yellow, pinkish, or purplish |
| |
| 48. Leaflets 59; plant silvery; Cushenbury Canyon (ne San Bernardino Mountains, adjacent Mojave Desert) |
| 2 A. albens |
| 48' Leaflets on most leaves > 9; plants often green; widespread, including Cushenbury Canyon |
| |
| 49. Fruit 57 mm, 2-chambered; calyx 34 mm; banner 47 mm |
| |
| 50. Stem 310 dm; flowers reflexed, 2095 per inflorescence |
| A. clevelandii |
| 50' Stem 14 dm; flowers strongly ascending, 213 per inflorescence |
| A. lemmonii |
| 49' Fruit 960 mm, 2- or often 1-chambered; calyx 413 mm; banner > 7 mm |
| |
| 51. Fruit bladdery, walls ± thinly papery |
| |
| 52. Middle of fruit 2-chambered, beak strongly compressed side-to-side, triangular in side view, 1-chambered; banner recurved 3050° |
| 2 A. lentiginosus vars. |
| 52' Middle of fruit 1-chambered, beak often not strongly compressed, not triangular in side view, sometimes 2-chambered; banner recurved 4090°, often > 60° |
| |
| 53. Flowers, fruits crowded in head-like clusters 2.53.5 cm wide in fruit; fruit 1218 mm, ascending, hairs ± spreading |
| 2 A. hornii var. hornii |
| 53' Flowers, fruits, if crowded, in clusters > 3.5 cm wide in fruit; fruit generally > 20 mm, often spreading, hairs ± appressed or becoming 0 |
| |
| 54. Banner generally > 11 mm, recurved ± 4045°; leaflets often > 25 (see also A. macrodon, lead 56.) |
| |
| 55. Leaflets 1929, not clearly smaller from leaf base to tip; midrib of leaflet prominently raised on lower side; immature seeds 2940; 250300 m, Peninsular Ranges (sw San Diego Co.) |
| A. deanei |
| 55' Leaflets 2541, clearly, gradually smaller from leaf base to tip; midrib of leaflet not prominently raised on lower surface; immature seeds 3555; 50700 m, s Outer South Coast Ranges, South Coast, Peninsular Ranges, nw Baja California |
| A. pomonensis |
| 54' Banner generally < 11 mm, recurved 6090°; leaflets generally < 25 (see also A. deanii, lead 55.) |
| |
| 56. Leaf, fruit minutely strigose or becoming glabrous; leaflet margin, midrib green; calyx lobes 0.72.6 mm; immature seeds 5171; s Sierra Nevada, Tehachapi Mountain Area, Great Central Valley, Central Western California, Southwestern California |
| A. douglasii vars. |
| 56' Leaf, fruit ± wavy- or incurled-hairy; leaflet margin, midrib generally purple; calyx lobes 2.5- 4.3 mm; immature seeds 2952; c&s Central Western California |
| A. macrodon |
| 51' Fruit narrow or swollen but not bladdery, walls stiffly papery, leathery, or woody (fruit inflated but not bladdery, walls stiffly papery in A. oocarpus, A. palmeri) |
| |
| 57. Stem 3.510 cm, widely spreading-hairy, from crown below surface; s High Sierra Nevada, n Tehachapi Mountain Area |
| 2 A. ertterae |
| 57' Stem generally > 10 cm, ascending- or appressed-strigose or ± glabrous, generally from crown at surface; widespread, including s High Sierra Nevada, n Tehachapi Mountain Area |
| |
| 58. Stem erect to widely ascending, 60150 cm; sw Southwestern California |
| |
| 59. Flower reflexed; corolla dull lilac; fruit reflexed, deciduous, < 10 mm, densely wavy-hairy |
| A. brauntonii |
| 59' Flower widely ascending; corolla cream; fruit erect, persistent, 1525 mm, ± glabrous |
| A. oocarpus |
| 58' Stem decumbent to erect, < 60 cm (> 60 cm in n California Floristic Province); widespread |
| |
| 60. Fruit 1-chambered throughout, thickly papery, ± bladdery; flowers spreading; corolla often pink-purple (or cream); w edge Sonoran Desert, adjacent foothills of San Bernardino Mountains, Peninsular Ranges |
| 2 A. palmeri |
| 60' Fruit ± 2-chambered, at least in middle, often throughout, thinly papery to stiffly leathery or woody, linear to very swollen and bladdery; flowers ascending to reflexed; corolla cream or pink-purple; widespread |
| |
| 61. Beak of fruit triangular in side view, compressed strongly side-to-side, 1-chambered; fruit > 5 mm wide, swollen, both sutures ± sunken; corolla purplish or whitish |
| 2 A. lentiginosus vars. |
| 61' Beak of fruit acuminate to ± triangular in side view, generally not compressed strongly, 2-chambered; fruit generally < 5 mm wide, ± 3-sided, lower suture generally sunken, upper raised; corolla pinkish or greenish white or whitish |
| |
| 62. Fruit, ovary glabrous |
| |
| 63. Plant ± glabrous; fruit body 1424 mm, spreading or reflexed; Klamath Ranges, Outer North Coast Ranges |
| A. umbraticus |
| 63' Plant minutely strigose, especially above; fruit body 2042 mm, ascending; San Bernardino Mountains, Desert Mountains |
| |
| 64. Leaflets 719; banner 710.2 mm; calyx tube 2.74.1 mm |
| A. bernardianus |
| 64' Leaflets 1727; banner 12.615.7 mm; calyx tube 4.15 mm |
| A. tricarinatus |
| |
| 65. Flowers 614 per inflorescence, strongly ascending; fruit erect; stem 515 cm; se Klamath Ranges, Modoc Plateau |
| A. obscurus |
| 65' Flowers generally 1040 per inflorescence, spreading or reflexed; fruit loosely ascending or reflexed; stem > 15 cm; East of Sierra Nevada, Sierra Nevada Foothills, Outer North Coast Ranges |
| |
| 66. Herbage silvery-silky, hairs wavy; banner 1318 mm, pink-white East of Sierra Nevada, perhaps eastern edge High Sierra Nevada |
| 2 A. sepultipes |
| 66' Herbage green, ± glabrous (grayish hairy in c&s Sierra Nevada Foothills); banner often < 14 mm, whitish |
| |
| 67. Calyx lobes 35 mm; fruit 1115 mm; Outer North Coast Ranges |
| A. agnicidus |
| 67' Calyx lobes 13 mm; fruit 1535 mm; c&s Sierra Nevada Foothills |
| A. congdonii
|
| 1. Terminal leaflet not or only obscurely jointed to midrib, joint unlike that of lateral leaflet; lateral leaflets often reduced or 0, spaces between generally >> 1.5 × leaflet width; leaves few, sparse |
| |
| 2. Banner 1014.2 mm; leaflets 313; fruit half-ovoid to ± spheric, bladdery |
| A. magdalenae var. peirsonii |
| 2' Banner 1726 mm; leaflets 511; fruit plumply oblong, not bladdery |
| A. serenoi var. shockleyi |
| 1' Terminal leaflet clearly jointed to midrib, joint like that of lateral leaflet; lateral leaflets present, spaces between rarely > 1.5 × leaflet width; leaves generally many, not sparse |
| |
| 3. Hairs dense, forked at base; leaflets 17, crowded near leaf tip |
| A. calycosus var. calycosus |
| 3' Hairs 0 to dense, not forked; leaflets often > 7, generally not crowded near leaf tip |
| |
| 4. Annual (or flowering first year and appearing so) |
| |
| 5. Flower, fruit strongly ascending in dense, head-like racemes; fruit ± spheric, 24 mm |
| A. didymocarpus vars. |
| 5' Flower, fruit ± ascending to spreading in often open racemes; fruit linear to ± ovate-inflated, > 4 mm |
| |
| |
| 7. Plant densely shaggy-hairy; stem generally << 7 cm, ± prostrate, often nearly 0; fruit 1-chambered |
| 2 A. tidestromii |
| 7' Plant ± glabrous to strigose; stem > 9 cm, prostrate to erect; fruit 1- or 2-chambered |
| |
| 8. Keel 1013 mm; fruit 2-chambered at middle |
| 4 A. lentiginosus vars. |
| 8' Keel 1721 mm; fruit 1-chambered |
| 2 A. crotalariae |
| |
| 9. Fruit bladdery, walls thinly papery, translucent |
| |
| 10. Inflorescence generally 1035-flowered |
| |
| 11. Leaflets 1133; fruit 1-chambered throughout |
| A. hornii var. hornii |
| 11' Leaflets 1119; fruit 2-chambered below beak |
| 4 A. lentiginosus vars. |
| 10' Inflorescence generally 210-flowered |
| |
| 12. Corolla whitish; leaflets 1119; upper suture of fruit convex; immature seeds 1321 |
| A. allochrous var. playanus |
| 12' Corolla purplish; leaflets 719; upper suture of fruit straight or convex; immature seeds 724 |
| |
| 13. Keel 4.86 mm; leaflets generally 1119; upper suture of fruit much less convex than lower; immature seeds 714 |
| A. insularis var. hardwoodii |
| 13' Keel 5.96.6 mm; leaflets generally 713; upper and lower sutures of fruit ± equally convex; immature seeds 1924 |
| 2 A. nutans |
| 9' Fruit linear or swollen, not bladdery, walls papery (but not especially translucent) or leathery |
| |
| 14. Inflorescence 2040-flowered |
| 2 A. palmeri |
| 14' Inflorescence < 20-flowered |
| |
| 15. Fruit 1-chambered, swollen, half-ovate or -elliptic in side view, ± ovate or round in X-section |
| |
| 16. Plant, fruit hairs appressed, ± straight, ± obscuring surface; immature seeds 37 |
| A. aridus |
| 16' Plant, fruit hairs ascending or spreading, ± wavy, not obscuring surface; immature seeds 1019 |
| A. sabulonum |
| 15' Fruit 2-, rarely 1-chambered, then often ± linear, curved, ± 2- or 3-sided in X-section |
| |
| 17. Upper surface of leaflets sparsely hairy; inflorescence 16-flowered; keel < 6 mm; fruit often < 3 mm wide |
| |
| 18. Leaflets of upper leaves generally blunt, notched at tip; fruit quickly deciduous, maturing pale brown |
| A. acutirostris |
| 18' Leaflets of upper leaves generally acute at tip; fruit persistent, maturing dark brown or blackish |
| A. nuttallianus vars. |
| 17' Upper surface of leaflets silvery-canescent; inflorescences 316-flowered; keel > 6 mm; fruit often > 3 mm wide |
| |
| 19. Fruit 1018 mm, 2.83.5 mm wide, incurved, ± 3-sided; immature seeds 811; Cushenbury Canyon (of ne San Bernardino Mountains, adjacent Mojave Desert) |
| 2 A. albens |
| 19' Fruit 1332 mm, 3.58.5 mm wide, straight, ± 2-sided, or incurved, ± 3-sided; immature seeds 2030; widespread in Mojave Desert |
| 2 A. mohavensis vars. |
| |
| 20. Fruit, generally ovary, glabrous (A. douglasii, A. nutans also sometimes glabrous, under 20') |
| |
| 21. Leaflet hairs 0 or few, restricted to margins, midrib on 1 or both surfaces; fruit base stalk-like |
| |
| 22. Flowers early ascending, then sometimes reflexed; keel 9.510.6 mm; fruit ± ascending, ± 2-chambered |
| A. cimae vars. |
| 22' Flowers strongly ascending; keel 1119 mm; fruit erect, 1-chambered |
| 2 A. preussii vars. |
| 21' Leaflet hairs ± throughout 1 or both surfaces; fruit base stalk-like or not |
| |
| 23. Keel 69.4 mm; fruit 2-chambered, at least at middle |
| |
| 24. Plant often coarse, leafy, generally in open; stem not wiry; fruit sessile fruit swollen, beak strongly compressed side-to-side, triangular in side view, 1-chambered |
| 4 A. lentiginosus vars. |
| 24' Plant slender, sparsely leafy, often in shelter of shrubs; stem ± wiry; stalk-like fruit base 15 mm |
| |
| 25. Flowers 1025 per inflorescence, ascending; fruit ascending, 3-sided |
| A. bernardianus |
| 25' Flowers 515 per inflorescence, early ascending, then reflexed; fruit pendent, ± 2-sided |
| A. jaegerianus |
| 23' Keel 9.719 mm; fruit 1- or 2-chambered |
| |
| 26. Calyx glabrous; banner recurved ± 85°; fruit bladdery, 1-chambered, base stalk-like |
| A. oophorous var. oophorous |
| 26' Calyx strigose; banner recurved < 50°; fruit ovoid or narrow, not bladdery, ± 2-chambered base, stalk-like or not |
| |
| 27. Corolla pink-purple; leaflets very narrow, upper surface often paler than lower (silvery vs greenish); fruit erect, sessile; n Inyo Co. |
| A. serenoi var. shockleyi |
| 27' Corolla white or cream; leaflets narrow or wide, upper surface not paler than lower; fruit ascending to pendent, stalk-like base 110 mm; w or sw edge of Desert |
| |
| 28. Banner 1522 mm; fruit 1527 mm, swollen, ± compressed side-to-side; leaflets sometimes > 17 |
| A. pachypus vars. |
| 28' Banner 12.615.7 mm; fruit 2442 mm, ± linear, thin-walled, 3-sided; leaflets 1727 |
| A. tricarinatus |
| 20' Fruit, ovary with at least some hairs (A. douglasii, A. nutans sometimes glabrous) |
| |
| 29. Plant conspicuously woolly- or wavy-hairy; stems < 9 cm, generally densely tufted |
| |
| 30. Leaflets > 21, at least on some leaves; inflorescence 1035-flowered; se Mojave Desert |
| A. tephrodes var. brachylobus |
| 30' Leaflets not > 21 on any leaf (rarely to 23 in A. layneae); inflorescence often < 10-flowered (1045-flowered in A. layneae); widespread |
| |
| 31. Keel 1828 mm; fruit 1-chambered, densely white-hairy |
| |
| 32. Calyx with more black than white hairs; fruit 2550 mm; leaf bases not notably persistent on crown; ne Desert Mountains (eastern of Death Valley) |
| A. funereus |
| 32' Calyx generally with more white than black hairs; fruit 1328 mm; leaf bases persistent on crown; widespread, including Desert Mountains |
| A. newberryi var. newberryi |
| 31' Keel generally < 20 mm; fruit 2-chambered if densely white-hairy |
| |
| 33. Inflorescence 1045-flowered; corolla 2-colored, whitish with keel tip, wing tips, and sometimes banner tip purplish; fruit hairs spreading plants from deep rhizomes (± stless plants of A. minthorniae will key out here; see 37.) |
| 2 A. layneae |
| 33' Inflorescence 316-flowered; corolla pink-purple or ± 2-colored (± as at 33.); fruit hairs appressed or densely white-cottony |
| |
| 34. Keel 11.520.8 mm; petals pink-purple; fruit often ± 2-chambered, hairs spreading or curly, densely white-cottony |
| A. purshii var. tinctus |
| 34' Keel 1012 mm; petals whitish, tinged dull purple; fruit 1-chambered, hairs generally appressed |
| 2 A. tidestromii |
| 29' Plant hairy to ± glabrous; stems generally > 9 cm (if < 9 cm, plant not woolly- or wavy-hairy), tufted or not |
| |
| 35. Stem < 16 cm, from deep rhizome; corolla 2-colored, whitish with keel tip, wing tips, and sometimes banner tip purplish |
| 2 A. layneae |
| 35' Stem often > 15 cm, from crown at or slightly below surface; corolla 1- or 2-colored |
| |
| 36. Leaflet hairs 0 or few on margins, midrib on 1 or both sides; stalk-like fruit base 0 or 27 mm |
| 2 A. preussii vars. |
| 36' Leaflet hairs at least few, ± throughout 1 or both sides; stalk-like fruit base 0 or < 3 mm |
| |
| 37. Stem, leaf hairs spreading, sometimes curly, 0.81.5 mm; fruit shaggy-hairy, ± erect |
| A. minthorniae var. villosus |
| 37' Stem, leaf hairs appressed, if spreading then < 0.8 mm; fruit often strigose or silky-canescent, erect to reflexed or pendent |
| |
| 38. Stem slender, wiry, incurved, < 15 cm; petioles persistent, wiry; inflorescence 14-flowered; plants of limestone, resembling an unkempt nest |
| A. panamintensis |
| 38' Stem slender or coarse, if wiry then not incurved, often > 15 cm; petioles deciduous, not wiry; inflorescence often > 4-flowered |
| |
| 39. Petals dingy white at least at base, dull lilac on margins or tips; wings ± twisted, tips shortly fringed or notched; fruit pendent, ± compressed side-to-side, 2-chambered |
| A. atratus var. mensanus |
| 39' Petals white to ± purple; wings plane or curved, tips not fringed, not notched; fruit erect to reflexed, ± 3-sided or round in X-section, sometimes plump and widely grooved on upper side, 1- or 2-chambered |
| |
| 40. Fruit 2-chambered in middle, beak often 1-chambered; banner recurved 3050° |
| |
| 41. Leaflets generally > 11; fruit X-section ± round, upper suture generally ± sunken in a wide channel; plant generally robust fruit beak widely triangular, 1-chambered |
| 4 A. lentiginosus vars. |
| 41' Leaflets 311; fruit ± 2- or 3-sided, upper suture raised; plant robust or delicate |
| |
| 42. Fruit 1018 mm, 2.83.5 mm wide, incurved, ± 3-sided; immature seeds 811; Cushenbury Canyon (ne San Bernardino Mountains, adjacent Mojave Desert) |
| 2 A. albens |
| 42' Fruit 1332 mm, 3.58.5 mm wide, straight, ± 2-sided, or incurved, ± 3-sided; immature seeds 2030; widespread in Mojave Desert |
| 2 A. mohavensis vars. |
| 40' Fruit 1-chambered throughout; banner recurved 4590° |
| |
| 43. Of the following, all true: most leaves with > 19 leaflets; fruit bladdery; inflorescence > 14-flowered |
| A. douglasii vars. |
| 43' Of the following, 1 true: most leaves with < 19 leaflets; fruit swollen but not bladdery; inflorescence < 12-flowered |
| |
| 44. Banner > 11 mm; calyx generally > 7 mm; fruit stiffly papery or leathery |
| |
| 45. Keel < 14 mm; fruit reflexed, 510 mm wide; East of Sierra Nevada, Desert Mountains (Inyo Co.) |
| A. casei |
| 45' Keel > 17 mm; fruit ascending or spreading, 1014 mm wide; Sonoran Desert |
| 2 A. crotalariae |
| 44' Banner < 11 mm; calyx 47 mm; fruit bladdery, ± papery |
| |
| 46. Inflorescence generally 1040-flowered; petals generally bright pink-purple; w edge Sonoran Desert, adjacent foothills of San Bernardino Mountains, Peninsular Ranges |
| 2 A. palmeri |
| 46' Inflorescence often < 10-flowered; petals whitish or pink-purple; c&e Sonoran Desert, e Mojave Desert |
| |
| 47. Petals whitish; leaflets 1119; fruit beak short, obscure |
| A. allochrous var. playanus |
| 47' Petals pink-purple; leaflets 713; fruit beak deltate, strongly compressed side-to-side |
| |
| 48. Banner 6.18 mm; immature seeds 812; n Mojave Desert (Panamint Mtns), > 2000 m |
| A. gilmanii |
| 48' Banner 7.810.4 mm; immature seeds 19-24; eastern Mojave Desert, < 2000 m |
| 2 A. nutans
|
| 1. Terminal leaflet not or only obscurely jointed to midrib, joint unlike that of lateral leaflet; lateral leaflets often reduced or 0, spaces between generally >> 1.5 × leaflet width; leaves few, sparse |
| |
| 2. Fruit strongly compressed side-to-side, base stalk-like; banner 9.412.2 mm |
| A. inversus |
| 2' Fruit cylindric or ± compressed side-to-side, sessile; banner 1726 mm |
| A. serenoi var. shockleyi |
| 1' Terminal leaflet clearly jointed to midrib, joint like that of lateral leaflet; lateral leaflets present, spaces between rarely > 1.5 × leaflet width; leaves generally many, not sparse |
| |
| 3. Annual, slender, rarely persisting into second season |
| |
| 4. Banner 35 mm; fruit < 4 mm |
| A. didymocarpus var. dispermus |
| 4' Banner 4.77.6 mm; fruit > 12 mm |
| |
| 5. Fruit not bladdery, not inflated, 23 mm wide; leaflet upper surface ± appressed-hairy |
| A. acutirostris |
| 5' Fruit inflated, 610 mm wide; leaflet upper surface ± glabrous |
| A. geyeri var. geyeri |
| 3' Perennial, often coarse flower, fruit > 5 mm |
| |
| 6. Leaf hairs forked at base |
| |
| A. calycosus var. calycosus |
| A. canadensis var. brevidens |
| |
| 8. Fruit densely white-hairy, resembling a small ball of cotton; stem 014 cm; plant hairs dense, of 2 kinds or not |
| |
| 9. Stems forming a thickened crown covered by persistent leaf bases; longer hairs of leaf generally straight, some spreading; some fruit hairs curly and short, some long and ± straight (see also A. platytropis) |
| A. newberryi var. newberryi |
| 9' Stems tufted or matted, leaf bases not persistent; longer hairs of leaf wavy, tangled; fruit hairs all ± wavy or all straight |
| A. purshii vars. |
| 8' Fruit sometimes silvery-hairy, but not resembling a small ball of cotton; stem often > 10 cm; plant hairs sparse or dense, generally not of 2 kinds |
| |
| 10. Calyx base strongly asymmetric, pedicel attached at lower side, upper ± pouched; petals white to yellowish; fruit curved 1/4 to ± full circle, base stalk-like |
| |
| 11. Stem hairs subappressed or incurved; fruit 2.54.5 mm wide; lowest stipules not fused |
| A. curvicarpus var. curvicarpus |
| 11' Stem hairs spreading or reflexed; fruit 48 mm wide; lowest stipules fused around stem into low sheath |
| A. gibbsii |
| 10' Calyx base ± symmetric, pedicel attached ± at middle, upper side not conspicuously pouched; petals white, yellowish, or purplish pink; fruit straight to curved ± full circle, base stalk-like or not |
| |
| 12. Fruit pendent, early ± flat, then bulged around seeds, base slender, stalk-like; corolla white or cream |
| |
| 13. Calyx, leaf hairs wavy, ± ascending or spreading; calyx > 6 mm |
| A. californicus |
| 13' Calyx, leaf hairs ± straight, appressed; calyx generally < 6 mm |
| A. filipes |
| 12' Fruit erect to pendent, early ± swollen then ± round, triangular, or 2-lobed in X-section, base stalk-like or not; corolla whitish, yellowish, or purplish |
| |
| 14. Lower stipules fused around stem into short sheath (often ruptured by stem expansion or missing on specimens without base) |
| |
| 15. Stalk-like fruit base > 0.5 mm |
| |
| 16. Banner < 6 mm; fruit body narrow, 711 mm, 3-sided |
| A. johannis-howellii |
| 16' Banner > 8 mm; fruit body bladdery, > 15 mm, X-section ± round |
| A. whitneyi vars. |
| 15' Stalk-like fruit base 0 (see also A. johannis-howellii, 16.) |
| |
| 17. Banner often 4.89 mm; fruit 1-chambered (± 2-chambered in A. ravenii); stem delicate, 120 cm |
| |
| 18. Fruit generally compressed side-to-side, ± 3-sided, 3.54.5 mm, hairs subappressed, ± straight; banner 4.85.2 mm, recurved ± 6080° |
| A. anxius |
| 18' Fruit bladdery, ± round in X-section, 1020 mm, hairs spreading, wavy; banner 5.28.5 mm, recurved 90100° |
| 2 A. pulsiferae vars. |
| 17' Banner often > 9 mm; fruit ± 2-chambered; stem often coarse, 035 cm |
| |
| 19. Herbage very sparsely hairy or ± glabrous; flowers, fruits strongly ascending, crowded in ovoid, head-like racemes |
| 2 A. agrestis |
| 19' Herbage densely hairy; flowers ultimately spreading or reflexed, fruits ± ascending to reflexed, crowded or not |
| |
| 20. Plants cespitose; stem < 2 cm; fruit bladdery |
| A. platytropis |
| 20' Plants tufted or loosely matted; stem > 5 cm; fruit not bladdery |
| |
| 21. Crown at surface; lowest few internodes above surface, densely white-tomentose; fruit X-section bluntly triangular |
| A. andersonii |
| 21' Crown below surface; lowest few internodes below surface, ± glabrous; fruit X-section oblong or bluntly triangular |
| |
| 22. Keel 6.78 mm; fruit oblong in X-section, not fully 2-chambered, ± narrowed at sutures |
| A. monoensis |
| 22' Keel 1012.2 mm; fruit bluntly 3-sided in X-section, fully 2-chambered, not narrowed at sutures |
| A. sepultipes |
| 14' Lower stipules not fused around stem into sheath |
| |
| 23. Flowers 14 per inflorescence, strongly ascending; corolla pink-purple; stems low, tufted or matted, softly gray-hairy |
| A. argophyllus var. argophyllus |
| 23' Flowers generally > 4 per inflorescence, strongly ascending to reflexed; corolla ± purple to white; stems low or not, tufted or not, rarely matted, ± glabrous to strigose or spreading-hairy |
| |
| 24. Fruit 1-chambered at mid-section, stalk-like base 0 to > 3 mm |
| |
| 25. Ovary, fruit glabrous; fruit bladdery, widely ovoid, base stalk-like |
| A. oophorous vars. |
| 25' Ovary, fruit ± hairy; fruit bladdery or only swollen, ovoid or incurved, base stalk-like or not |
| |
| 26. Stalk-like fruit base 25 mm; corolla pink-purple |
| A. inyoensis |
| 26' Fruit sessile; corolla white to purple |
| |
| 27. Keel 35 mm; fruit 1020 mm, bladdery |
| 2 A. pulsiferae vars. |
| 27' Keel 814 mm; fruit 1255 mm, swollen but not bladdery |
| |
| 28. Stem ascending or erect, wiry; leaflets > 4 × longer than wide, spaces between >> width; keel > 10 mm |
| A. casei |
| 28' Stem ± prostrate to decumbent, ± mat-forming; leaflets < 2.5 × longer than wide, spaces between ± = or < width; keel < 10 mm |
| |
| 29. Banner 1015.5 mm; herbage, fruit hairs stiff, straight, appressed, < 0.7 mm |
| A. iodanthus var. iodanthus |
| 29' Banner 910 mm; herbage, fruit hairs soft, wavy, spreading, ± 1 mm |
| 2 A. pseudiodanthus |
| 24' Fruit ± 2-chambered at mid-section, stalk-like base 0 or < 3 mm |
| |
| 30. Banner 4.86.1 mm; peduncles often in 2's or 3's in upper axils |
| A. lemmonii |
| 30' Banner > 7 mm; peduncles generally in 1's in upper axils |
| |
| 31. Stipules 717 mm, whitish or straw-colored; fruit, herbage hairs ± 1.52.5 mm, spreading |
| A. malacus |
| 31' Stipules < 6 mm, often greenish; fruit, herbage hairs 0 or generally < 1.5 mm, ± appressed |
| |
| 32. Flowers, fruits in ovoid, head-like racemes, strongly ascending; herbage sparsely hairy or ± glabrous |
| 2 A. agrestis |
| 32' Flowers, fruits not in head-like racemes, generally spreading or reflexed; herbage ± glabrous to densely hairy |
| |
| 33. Fruit erect, < 4 mm wide, straight, ± bluntly 3-sided, beak slender, ± tooth-like |
| A. obscurus |
| 33' Fruit spreading or reflexed, generally > 4 mm wide, straight to curved, sides rounded, beak ± triangular |
| |
| 34. Crown below surface; fruit curved at least 1/2 circle, wider than deep |
| 2 A. pseudiodanthus |
| 34' Crown at surface; fruit at most slightly curved, generally ± as deep as wide |
| A. lentiginosus vars.
|