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Stanleya viridiflora
Nutt.
Family:
Brassicaceae
Green Prince's-Plume
Max Licher
FNA
Resources
Ihsan A. Al-Shehbaz in Flora of North America (vol. 7)
Perennials;
(caudex simple, covered with persistent petiolar remains); (glaucous), glabrous throughout.
Stems
erect, un-branched or branched distally, (2.5-)4-12(-14) dm.
Basal leaves:
petiole 2-10(-16) cm; blade lanceolate to oblanceolate or ovate, (2.2-)5-18(-22) cm × 10-40(-60) mm, margins often entire, sometimes dentate, rarely lyrate-pinnatifid.
Cauline leaves
sessile; blade lanceolate, (2-)3.5-8.5(-11) cm × (2-)5-19(-28) mm (smaller distally, base auriculate to sagittate), margins entire.
Racemes
loose.
Fruiting pedicels
horizontal to divaricate-ascending, 4-9(-12) mm.
Flowers:
sepals oblong-linear, 12-18 mm; petals whitish to lemon yellow, narrowly oblanceolate, 13-20 × 1-3 mm, claw 7-11 mm, (nearly linear-lanceolate), slightly wider at base, (margins usually erose, rarely subentire and crisped); filaments 11-20 mm; anthers 3.5-6 mm; gynophore (6-)11-22(-25) mm.
Fruits
divaricate or descending, curved inward, (torulose), subterete, 3-6 (-7) cm × 1.2-2 mm; ovules 28-50 per ovary; style 0.04-0.3 mm.
Seeds
oblong, 2-3 × 1-1.2 mm.
2
n
= 28.
Flowering May-Jul. Sagebrush and pinyon-juniper communities, limestone shale and rocks, red sandstone slopes, volcanic rocky slopes, clay knolls, steep bluffs; 1300-2700 m; Calif., Colo., Idaho, Mont., Nev., Oreg., Utah, Wyo.
Stanleya collina
M. E. Jones is an illegitimate name that pertains to
S. viridiflora
.
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Max Licher
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This project made possible by
National Science Foundation Award 1410069
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