Stanleya viridiflora

Illustrator: Yevonn Wilson-Ramsey

Copyright: Flora of North America Association

Perennials; (caudex simple, covered with persistent petiolar remains); (glaucous), glabrous throughout. Stems erect, unbranched 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. 2n = 28.

Phenology: Flowering May–Jul.
Habitat: Sagebrush and pinyon-juniper communities, limestone shale and rocks, red sandstone slopes, volcanic rocky slopes, clay knolls, steep bluffs
Elevation: 1300-2700 m

Distribution

• Generated Map
• Legacy Map

Calif., Colo., Idaho, Mont., Nev., Oreg., Utah, Wyo.

Discussion

Stanleya collina M. E. Jones is an illegitimate name that pertains to S. viridiflora.

Selected References

None.

Lower Taxa

None.