The Jepson Manual: Higher Plants of California

    THIS PAGE IS NO LONGER UPDATED
    AND IS MAINTAINED FOR ARCHIVAL PURPOSES ONLY
  • Up-to-date information about California vascular plants is available from the Jepson eFlora.

Names are linked to treatments from the Manual


Key to DUDLEYA

N.B.: couplets are linked, e.g., 1. is linked to 1'.

  1. Stem corm-like, below surface, simple; leaves vernal, base generally < 1 cm wide — petals, follicles generally spreading (subg. Hasseanthus)
 
    2. Flower odorless; petals yellow; follicles spreading
 
      3. Leaf linear, slightly narrowed above base, sharply acute at tip, 4–15 cm, base > 4 mm wide; petals fused 1–2 mm
D. multicaulis
      3' Leaf oblanceolate to spoon-shaped, strongly narrowed above base, acute to obtuse at tip, 1–7 cm, base generally < 3 mm wide; petals fused 0.5–1 mm
D. variegata
    2' Flower odor musky-sweet; petals white; follicles ascending to spreading
 
      4. Petals erect to ascending, 7–14 mm, 3.5–5.5 mm wide, fused 1–2 mm; follicles ascending; leaf base 4–12 mm wide
D. nesiotica
      4' Petals spreading, 5–10 mm, 2–4 mm wide, fused generally < 1 mm; follicles spreading; leaf base 1–4 mm wide
D. blochmaniae
        5. Caudex oblong, 4–8 × longer than wide; lower bracts < 1.5 × longer than wide; leaf 7–15 mm, spoon-shaped
subsp. brevifolia
        5' Caudex spheric to fusiform, generally < 3 × longer than wide; lower bracts > 2 × longer than wide; leaf 10– 60 mm, ± oblanceolate
 
          6. Leaves generally < 12 per rosette; peduncle > 4 cm; mainland
subsp. blochmaniae
          6' Leaves > 15 per rosette; peduncle 3–7 cm; n Channel Islands
subsp. insularis
  1' Stem a caudex, above surface, often elongate, often branched; leaves generally evergreen, base generally 1–5 cm wide
 
    7. Petals erect below, variously spreading from near middle; follicles ascending to spreading (subg. Stylophyllum)
 
      8. Leaf ± round in X-section, except at base
 
        9. Inflorescence 1° branches generally 2–3, simple; caudex generally < 1 cm wide; follicles 30–45° < erect, slightly swollen near base
D. attenuata subsp. orcuttii
        9' Inflorescence 1° branches 3–several, forked 1–2 ×; caudex generally > 1 cm wide; follicles 45–80° < erect, strongly swollen near base
 
          10. Leaf covered with mealy powder; styles 2–3 mm; pedicel > 2 mm; San Gabriel Mountains
D. densiflora
          10' Leaf not covered with mealy powder; styles 1–2 mm; pedicel < 2 mm; South Coast, Peninsular Ranges
D. edulis
      8' Leaf ± flat to ± elliptic in X-section
 
        11. Leaf sticky, appearing oily, odor resinous
D. viscida
        11' Leaf nonsticky, not appearing oily, odorless
 
          12. Petals bright yellow, tips erect or outcurved; leaf 4–6 ± wider than thick
D. traskiae
          12' Petals white to reddish, tips ascending to spreading; leaf 2–5 ± wider than thick
 
            13. Leaves 15–30 per rosette, 3–10 cm, 5–15 mm wide, ± covered with mealy powder; peduncle 1–3 dm
D. hassei
            13' Leaves 20–45 per rosette, 8–20 cm, 15–30 mm wide, green or glaucous; peduncle 2–6 dm
D. virens
    7' Petals erect below, slightly spreading at tips; follicles generally erect (subg. Dudleya)
 
      14. Petals fused ± 1/2 length; pedicel in fruit often sharply bent
D. pulverulenta
        15. Caudex 4–9 cm wide; leaves 40–60 per rosette, generally 8–25 cm; pedicel 5–30(35) mm
subsp. pulverulenta
        15' Caudex 1–4 cm wide; leaves 15–25 per rosette, generally 5–15 cm; pedicel 5–15(20) mm
subsp. arizonica
      14' Petals fused < 1/3 length; pedicel in fruit not sharply bent
 
        16. Plant branched by stolons; follicles ascending; South Coast (Orange Co.)
D. stolonifera
        16' Plant unbranched or branched by forked caudex; follicles ± erect
 
          17. Rosettes 1–5 dm wide, generally 1 per plant; leaves generally 20–45 per rosette; n Channel Islands
D. candelabrum
          17' Rosettes generally < 1.5 dm wide, 1–many per plant; leaves < 30 per rosette; generally mainland
 
            18. Caudex generally 0.5–10 cm, erect to prostrate, generally many-branched; leaf 2–8 mm thick
 
              19. Leaf ± 2 × longer than wide, oblong-ovate, 2.5–6 cm; petal margins generally not touching
D. farinosa
              19' Leaf generally > 2 × longer than wide, not oblong-ovate, 2–20 cm; petal margins generally touching
 
                20. Petals pale yellow or whitish, purple-tinged near tip or not, 8–13 mm
 
                  21. Caudex < 2 cm wide; leaf < 10 mm wide; Outer South Coast Ranges (San Luis Obispo Co.)
2 D. abramsii subsp. bettinae
                  21' Caudex 2–5 cm wide; leaf > 10 mm wide; Channel Islands
D. greenei
                20' Petals lemon-yellow or bright yellow to yellow with red, 8–16 mm
 
                  22. Rosette generally < 5 cm wide; peduncle 0.5–1.5 dm; petals lemon-yellow, tips spreading
D. verityi
                  22' Rosette 5–20 cm wide; peduncle 1.5–6.5 dm; petals yellow to yellow with red, tips erect
 
                    23. Petals yellow; leaf 10–20 mm wide; inflorescence terminal branches 3–15 cm
D. caespitosa
                    23' Petals yellow with red; leaf 15–50 mm wide; inflorescence terminal branches 5–8 cm
D. palmeri
            18' Caudex generally < 5 cm, erect, simple to many-branched; leaf 1–6 mm thick
 
              24. Pedicel generally 0.5–7 mm
 
                25. Petals bright yellow to red, keels similarly colored, margins entire
 
                  26. Peduncle 5–15(20) cm; leaf (1)2–8 cm, < 8 mm wide; s High Sierra Nevada (Tulare Co.)
2 D. cymosa subsp. costafolia
                  26' Peduncle 15–75 cm; leaf 5–30 cm, 10–40 mm wide; South Coast Ranges, Transverse Ranges, Peninsular Ranges, Desert Mountains
2 D. lanceolata
                25' Petals pale yellow, keel often reddish, margin often jagged
 
                  27. Inflorescence 1° branches 2–4, generally spreading, branched 0–3 ×; pedicel 2–12 mm; petals darker yellow to red-tinged on keel; Sierra Nevada
2 D. calcicola
                  27' Inflorescence 1° branches 0 or 2–3, ascending, generally simple; pedicel generally < 5 mm; petals often with fine, purple to red lines on keel; Central Western California, Southwestern California
 
                    28. Lower bracts 10–40 mm; peduncle 5–25 cm, 2–6 mm wide; serpentine; San Francisco Bay Area, Outer South Coast Ranges (San Luis Obispo Co. n)
 
                      29. Petals not purple-tinged, without red lines; plant not exuding purple dye when crushed; San Francisco Bay Area (Santa Clara Co.)
D. setchellii
                      29' Petals purple-tinged or red-lined; plant exuding purple dye when crushed; Outer South Coast Ranges (San Luis Obispo Co.)
D. abramsii
                        30. Rosettes generally > 10 per plant; leaf < 7 mm wide, ± cylindric; inflorescence 1° branches generally < 4; petals often purple-tinged near tips, with few purple flecks
subsp. bettinae
                        30' Rosettes < 10 per plant; leaf > 7 mm wide, upper side ± flat; inflorescence 1° branches generally > 4; petals with purple keel, purple flecks throughout
subsp. murina
                    28' Lower bracts generally 4–15 mm; peduncle 2–18 cm, 1–3 mm wide; nonserpentine; Southwestern California
D. abramsii
                      31. Leaves vernal; roots narrowed at irregular intervals; petals fused 1–2 mm
subsp. parva
                      31' Leaves generally evergreen; roots generally not narrowed at intervals; petals fused 1.5–4.5 mm
 
                        32. Leaf oblong to oblong-lanceolate or tapered base to tip; caudex few–many-branched; petals fused 2–4.5 mm
subsp. abramsii
                        32' Leaf elliptic to oblanceolate; caudex generally simple; petals fused 1.5–2.5 mm
subsp. affinis
              24' Pedicel 5–20 mm
 
                33. Leaf lanceolate to oblong-lanceolate to oblong-triangular, tip acute to subacuminate; terminal inflorescence branches generally 3–12 cm
 
                  34. Leaf 5–30 cm, 1–4 cm wide; peduncle 1.5–7.5 dm; petals fused 1–2 mm
2 D. lanceolata
                  34' Leaf 1–15 cm, 0.3–2.5 cm wide; peduncle 0.3–3.5(4) dm; petals fused 1–4 mm
 
                    35. Petals greenish yellow to bright yellow, often red-tinged; pedicel 5–20 mm
D. saxosa
                      36. Caudex 1–1.5 cm wide; leaf 3–9 cm; peduncle 0.5–2 dm; petals generally red-tinged
subsp. saxosa
                      36' Caudex 1–3 cm wide; leaf 4–15 cm; peduncle 1–3.5 dm; petals rarely red-tinged
subsp. aloides
                    35' Petals pale yellow; pedicel 2–14 mm
 
                      37. Inflorescence 1° branches 2–4, generally spreading, branched 0–3 ×; plant glaucous; petals sometimes red-tinged on keel
2 D. calcicola
                      37' Inflorescence 1° branches 2–3, ascending, generally simple; plant ± glaucous; petals not red-tinged on keel
D. setchellii
                33' Leaf elliptic to oblanceolate to spoon-shaped (rarely linear), tip acute, or acuminate to abruptly sharp; terminal inflorescence branches 1–5(17) cm
D. cymosa
                  38. Leaves vernal, 1.5–4 cm, 5–12 mm wide; caudex 2–10 mm wide; peduncle < 1 dm
subsp. marcescens
                  38' Leaves evergreen, 2–17 cm, generally 10–60 mm wide; caudex generally > 10 mm wide; peduncle 0.5–4.5 dm
 
                    39. Peduncle generally 1–4.5 dm; leaf 3–17 cm
 
                      40. Peduncle bracts 20–50; leaf elliptic to spoon-shaped; San Gabriel Mountains
subsp. crebrifolia
                      40' Peduncle bracts < 20; leaf not elliptic, rarely spoon-shaped; Northwestern California, Cascade Range, Sierra Nevada, Central Western California
 
                        41. Petals bright yellow to red; leaf 1–6 cm wide
subsp. cymosa
                        41' Petals pale yellow; leaf 0.5–2 cm wide
subsp. paniculata
                    39' Peduncle generally < 1.5 dm; leaf generally < 7 cm
 
                      42. Leaf linear to linear-oblanceolate, < 8 mm wide; rosettes 5–40 per plant; High Sierra Nevada
subsp. costafolia
                      42' Leaf spoon-shaped to oblanceolate to ovate, > 10 mm wide; rosettes < 10 per plant; Central Western California, Southwestern California
 
                        43. Leaves oblong to elliptic to ovate, acute to acuminate at tip, generally 6–10 per rosette; petals bright yellow
subsp. ovatifolia
                        43' Leaves diamond-shaped-oblanceolate to spoon-shaped, generally short-acuminate to abruptly sharp at tip, generally 10–25 per rosette; petals bright yellow to red
subsp. pumila


University & Jepson Herbaria Home Page |

Copyright by the Regents of the University of California