Dudleya virens

(Rose) Moran

Desert. Pl. Life 14: 191. 1943 ,.

Common names: Green liveforever bright green dudleya
Conservation concern
Basionym: Stylophyllum virens Rose in N. L. Britton and J. N. Rose, New N. Amer. Crassul., 34. 1903
Treatment appears in FNA Volume 8. Treatment on page 174. Mentioned on page 173.

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.

Discussion

Subspecies 4 (3 in the flora).

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

Selected References

None.

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

"dm" is not declared as a valid unit of measurement for this property.

... more about "Dudleya virens"
perigynous +  and hypogynous +
Reid V. Moran +
(Rose) Moran +
8mm +  and 40mm +
Stylophyllum virens +
light green +  and whitish +
lobed +  and toothed +
semiterete +, linear +  and triangular-lanceolate +
0.2 cm2 mm <br />0.002 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
2-5 times wider than thick +
1-3 times bifurcate +  and simple +
bifurcate +
6 cm60 mm <br />0.06 m <br /> (8 cm80 mm <br />0.08 m <br />) +
elongate +
whorled +, opposite +  and alternate +
1 cm10 mm <br />0.01 m <br /> (10 cm100 mm <br />0.1 m <br />) +
Green liveforever +  and bright green dudleya +
1.4 cm14 mm <br />0.014 m <br /> (2.3 cm23 mm <br />0.023 m <br />) +
15+-branched +  and 2-5-branched +
cylindric;obpyramidal +
Calif. +  and nw Mexico +
branched +  and simple +
ascending;spreading +
erect;spreading +
axillary +  and terminal +
0.2 cm2 mm <br />0.002 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
sessile +, petiolate +  and subclasping +
alternate +  and crowded +
persistent +
0 cm0 mm <br />0 m <br /> (5 cm50 mm <br />0.05 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
wider than tall +
semi-inferior +  and superior +
tenuinucellate +, crassinucellate +  and bitegmic +
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
perigynous +  and hypogynous +
rosy +  and white +
to middle +  and connate +
7mm;11mm +
reflexed +  and widespreading +
elliptic-oblong +  and triangular-ovate +
0.2 cm2 mm <br />0.002 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
(3-)4-5(-12)[-30+]-carpellate +
suberect +  and ascending +
0.6 cm6 mm <br />0.006 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Desert. Pl. Life +
cross-ribbed +  and ribbed +
1 +  and many +
Conservation concern +
adnate +  and free +
antipetalous +
2-branched +  and simple +
distinct +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
not oily +  and not viscid +
Dudleya virens +
Dudleya subg. Stylophyllum +
species +
cylindric +  and 5-gonal +
perennial +, biennial +  and annual +