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FNA | Family List | FNA Vol. 8 | Crassulaceae | Dudleya

1. Dudleya virens (Rose) Moran, Desert. Pl. Life. 14: 191. 1943.

Green liveforever, bright green dudleya

Stylophyllum virens Rose in N. L. Britton and J. N. Rose, New N. Amer. Crassul., 34. 1903

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.

Subspecies 4 (3 in the flora): California, nw Mexico.

Subspecies extima Moran is endemic to Guadalupe Island, Baja California, Mexico.

SELECTED REFERENCE Moran, R. V. 1995. The subspecies of Dudleya virens (Crassulaceae). Haseltonia 3: 1-9.


1 Rosette leaf blades 6-25 × 1-3 cm; floral shoots 2-7 dm × 5-15 mm; caudices 2-6(-8) cm wide.   1b Dudleya virens subsp. insularis
+ 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 (1) 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.   1a Dudleya virens subsp. virens
+ 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.   1c Dudleya virens subsp. hassei

Lower Taxa


 

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