Jepson eFlora
Key to families | Table of families and genera

Key to Aphyllon

View taxon page for Aphyllon

(For a list of species in Aphyllon, use the above link.)

Jepson Manual glossary definitions can be seen by moving your cursor over words underlined with dots.

1. Bractlets on pedicel subtending calyx 0; pedicels >> (2–8×) flower; stems subterranean or rising to about ground level; flowers generally < 20; nectary gland at base of ovary evident (sect. Aphyllon)

2. Flowers generally 5–20 per stem, occasionally more; distal pedicels < stem; proximal pedicels >= stem; hosts Artemisia, Eriodictyon, Eriogonum, Eriophyllum, Phacelia ..... A. fasciculatum

2' Flowers generally 1–4 per stem; distal pedicels > stem; proximal pedicels >> (generally 2–3×) stem; hosts not as above

3. Flowers 1–2 per stem; corollas white to purple; corolla lobe margins minutely ciliate; lower lip folds sometimes yellow; calyx lobes attenuate-thread-like; hosts Sedum, Antennaria, Senecio, Saxifragaceae, Apiaceae ..... A. purpureum

3' Flowers (1)2–4 per stem; corollas straw-colored to yellow, sometimes tinged pink or purple; corolla lobe margins glandular-hairy; lower lip folds not of contrasting color; calyx lobes narrowly triangular; host Galium ..... A. epigalium

4. Corollas yellow, often reddish or purplish tinged outside, (17)20–30 mm; corolla lobes spreading, length < 2× width; hosts not including Galium andrewsii; Northwestern California, Cascade Range, n&c Sierra Nevada, Sacramento Valley (Sutter Buttes), San Francisco Bay Area ..... subsp. epigalium

4' Corollas straw-color with pink or lavender cast outside, 13–20(23) mm; corolla lobes erect to slightly recurved at tip, length >= 2× width; host Galium andrewsii; San Bernardino Mountains, Western Transverse Ranges, Peninsular Ranges ..... subsp. notocalifornicum

1' Bractlets on pedicel subtending calyx 2; pedicels generally <= flower, occasionally 2× length; stems generally rising above ground level; flowers generally >20; nectary gland at base of ovary obscure (sect. Nothaphyllon)

5. Inflorescence and flowers ± yellow to dark purple (may be ± red in Orobanche pinorum); calyx generally 5–12 mm

6. Calyx divided nearly to base on lower side; hairs of inflorescence and corolla papillate, not glandular; on Adenostoma ..... A. tuberosum

6' Calyx divided ± equally; most hairs of inflorescence and corolla glandular, not papillate; on various genera

7. Corolla with ring of hairs at base of filaments; root attachment rounded, coral-like; on Holodiscus ..... A. pinorum

7' Corolla lacking ring of hairs; root attachment branched (rarely rounded, coral-like in Orobanche cooperi)

8. Inflorescence 4–5 cm wide; corolla 18–32 mm, lips 5–10 mm; on Asteraceae ..... A. cooperi

8' Inflorescence 2–3 cm wide; corolla 12–18 mm, lips 3–5 mm; on Garrya ..... A. validum

9. Corolla 14–18 mm, hairy outside, densely so at sinuses, hairs 0.4–0.7 mm; filament base and anther hairy ..... subsp. howellii

9' Corolla 12–14 mm, puberulent outside, sparsely so to glabrous at sinuses, hairs ± 0.1 mm; filament base and anther glabrous ..... subsp. validum

5' Inflorescence and flowers generally buff to ± pink, corolla lips white to pink or lavender, occasionally with darker veins (some populations of Aphyllon californicum, Aphyllon parishii subsp. parishii darker-flowered); calyx generally 10–20 mm (sometimes smaller in Aphyllon robbinsii)

10. Corolla 13–30 mm, lips 4–10 mm

11. Inflorescence branched, compressed, forming convex or ± flat-topped cluster; flowers crowded; corolla lobes erect

12. Corolla purple to pink, with darker veins, tube with prominent hump on upper side; anthers densely hairy throughout; on Artemisia tridentata; n Cascade Range, High Sierra Nevada, Great Basin Floristic Province, n Desert Mountains ..... A. corymbosum

12' Corolla pale with purple veins, tube without prominent hump on upper side; anthers glabrous, sometimes with long hairs along dehisced margin; on Eriophyllum staechadifolium; Central Coast..... A. robbinsii

11' Inflorescence of elongate, generally unbranched, ± raceme-like units; flowers ± separated, more regularly-spaced; corolla lobes various

13. Flowers pedicelled throughout; bracts lanceolate; mature flower corolla lobes strongly recurved, narrowly acute ..... A. vallicolum

13' Only proximal flowers pedicelled; bracts ± ovate; mature flower upper corolla lobes slightly recurved at tip, rounded or obtuse ..... A. parishii

14. Corolla 15–24 mm, lips 4–6 mm; calyx lobes generally 7–10 mm; sandy soil near ocean ..... subsp. brachylobum

14' Corolla 20–25 mm, lips 6–8 mm; calyx lobes 10–16 mm; dry openings in forest, chaparral, scrub ..... subsp. parishii

10' Corolla 20–50 mm, lips 10–14 mm (see also Aphyllon corymbosum for plants of High Sierra Nevada, Great Basin Floristic Province) ..... A. californicum

15. Corolla lavender to purple; calyx lobes, pedicels, and bracts similarly colored, drying dark purple; North Coast, n&c Central Coast ..... subsp. californicum

15' Corolla white or ± yellow to ± pink or ± red-tinged; calyx lobes, pedicels, and bracts pale to pink-tinged, drying brown; generally California Floristic Province (inland except Aphyllon californicum subsp. grande), Modoc Plateau, s East of Sierra Nevada, Mojave Desert

16. Corolla tube ± stout, > 4 mm wide at constriction, abruptly expanded to form hump-back throat

17. Stem delicate; ± 500 m; s Central Coast, Inner South Coast Ranges, Outer South Coast Ranges, w Western Transverse Ranges ..... subsp. condensum

17' Stem stout; 700–2500 m; s High Sierra Nevada, Tehachapi Mountain Area, Transverse Ranges, Peninsular Ranges, s East of Sierra Nevada, Mojave Desert ..... subsp. feudgei

16' Corolla tube slender below, < 4 mm wide at constriction, gradually expanded

18. Corolla 35–50 mm, lower lobes narrowly ovate, > 5 mm wide; generally on Corethrogyne filaginifolia; coastal dunes, marine terraces; s Central Coast, s Outer South Coast Ranges (Santa Barbara Co.), c South Coast (Los Angeles Co.), n Channel Islands (Santa Rosa Island) ..... subsp. grande

18' Corolla 20–40 mm, lower lobes narrowly triangular to oblong, < 5 mm wide

19. Plant 4–10 cm; stem proximal to inflorescence 1–5 cm; inflorescence a convex to ± flat-topped cluster < 5 cm; on Asteraceae; moist or vernally wet meadows, stream margins ..... subsp. grayanum

19' Plant 10–35 cm; stem proximal to inflorescence generally > 6 cm; inflorescence elongate, 5–20 cm; generally dry places; on various perennial herb and shrub Asteraceae ..... subsp. jepsonii


Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, [accessed on month, day, year]
Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on [month, day, year].
We encourage links to these pages, but the content may not be downloaded for reposting, repackaging, redistributing, or sale in any form, without written permission from The Jepson Herbarium.