Stanleya bipinnata |
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Habit | Perennials; (base sometimes woody); (glaucous), pubescent or glabrous. |
Stems | erect to ascending, usually unbranched, rarely branched (few) proximally, 1.5–4.5 dm, (sparsely pubescent). |
Basal leaves | (withered by flowering), similar to cauline. |
Cauline leaves | petiole 1.5–3 cm; blade (fleshy), lanceolate to ovate in outline, 4–7.5(–9.5) cm (smaller distally), margins (proximalmost) often 2-pinnatifid, or (distal) pinnatifid or pinnatisect, (surfaces sparsely pubescent, trichomes crisped). |
Racemes | dense. |
Flowers | sepals linear, 6.5–10 mm, glabrous; petals yellow-orange, oblong or narrowly so, 5–12 × 0.8–2 mm, claw (nearly linear), 5–7 mm, distinctly wider at base, pubescent inside; filaments 10–15 mm, glabrous; anthers 3–4 mm; gynophore 4–11 mm, sparsely to densely pubescent. |
Fruiting pedicels | horizontal to divaricate-ascending, 5–10 mm, (sparsely pubescent). |
Fruits | divaricate, tortuous, (torulose), terete, 2.5–4.6 cm × 1.5–2 mm; ovules 24–34 per ovary; style 0.02–0.4 mm. |
Seeds | oblong, 2.2–2.6 × 0.9–1.2 mm. |
2n | = 28. |
Stanleya bipinnata |
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Phenology | Flowering Jun–Jul. |
Habitat | Loose shale, clay hills, open plains, gumbo swales, dry draws |
Elevation | 1800-2400 m (5900-7900 ft) |
Distribution |
CO; UT; WY |
Discussion | Stanleya bipinnata is known from Larimer County in Colorado, Uinta County in Utah, and Albany, Carbon, and Uinta counties in Wyoming. R. C. Rollins (1993) and R. W. Lichvar (1983) treated it as a variety of S. pinnata; the morphological differences between these taxa strongly support the recognition of two species. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 7, p. 696. |
Parent taxa | |
Sibling taxa | |
Synonyms | S. pinnata var. bipinnata, S. pinnata var. gibberosa |
Name authority | Greene: Erythea 4: 173. (1896) |
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