Difference between revisions of "Dudleya virens"
Desert. Pl. Life 14: 191. 1943 ,.
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|genus=Dudleya | |genus=Dudleya | ||
|subgenus=Dudleya subg. Stylophyllum | |subgenus=Dudleya subg. Stylophyllum | ||
Latest revision as of 22:43, 5 November 2020
Caudices to 10 dm × 1–6(–8) cm, clumps to 20 dm diam. Leaves without resinous odor; rosette 15–55-leaved, 5–25 cm diam.; blade whitish or light green, linear to triangular-lanceolate [-oblanceolate], laminar or semiterete, 5–25 × 0.6–3 cm, 2–8 mm thick, 2–5 times wider than thick, base 8–40 mm wide, surfaces sometimes farinose, not viscid, not oily. Inflorescences: cyme densely 2–5-branched and obpyramidal, or 15+-branched and cylindric, (branches scattered proximally); branches simple or 1–3 times bifurcate; cincinni 3–20-flowered, somewhat circinate, 1–10 cm; floral shoots (reddish), 1–7 dm × 2–15 mm; leaves 12–45, ascending, oblong, to 5 × 0.5–1.5 cm. Pedicels 1–3(–6) mm. Flowers: petals widespreading or slightly reflexed from middle, connate 1.5–2.5 mm, white or rosy, triangular-ovate or elliptic-oblong, 7–11 × 2–3.5 mm, apex acute, corolla 14–23 mm diam.; pistils connivent, suberect to ascending, 6–10 mm, (base tapering); styles 2–4 mm. Follicles ascending with adaxial margins 40–50º from vertical. 2n = 34, 68.
Distribution
Calif., nw Mexico.
Discussion
Subspecies 4 (3 in the flora).
Subspecies extima Moran is endemic to Guadalupe Island, Baja California, Mexico.
Selected References
Lower Taxa
Key
| 1 | Rosette leaf blades 6-25 × 1-3 cm; floral shoots 2-7 dm × 5-15 mm; caudices 2-6(-8) cm wide. | Dudleya virens subsp. insularis |
| 1 | Rosette leaf blades 5-15 × 0.6-1.5 cm; floral shoots 1-4.5 dm × 2-7 mm; caudices 1-3 cm wide | > 2 |
| 2 | Rosette leaf blades triangular-lanceolate to linear-lanceolate, 1-1.5 cm wide, green, sometimes farinose; cyme branches 1-3 times bifurcate; cincinni 3-5 cm, 5-12-flowered. | Dudleya virens subsp. virens |
| 2 | Rosette leaf blades linear, 0.6-1 cm wide, appearing whitish, mostly farinose; cyme branches mostly simple or 1 times bifurcate; cincinni 2-10 cm, 3-20-flowered. | Dudleya virens subsp. hassei |