Streptanthella longirostris |
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beak streptanthella, fiddle mustard, long beak twist flower, long-beak fiddle mustard, longbeak streptanthella, streptanthella |
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Stems | often several, ascending distally, (1.2–)2–6(–7.5) dm. |
Basal leaves | soon withered. |
Cauline leaves | shortly petiolate or (distal) sessile; blade lanceolate to oblanceolate, or (distal) linear, 2–5.5(–6.5) cm × 3–10(–15) mm, (attenuate to petiolelike base), margins entire, dentate to sinuate, or pinnatifid, (distal cauline (1–)1.7–5.8(–7) cm × (0.7–)1.5–4(–7) mm, base cuneate to attenuate, margins entire, apex obtuse to acute). |
Flowers | sepals (2–)2.5–4(–5) × 0.7–1.5 mm; petals (3.5–)4–6(–7) × 0.7–1.1 mm, claw oblanceolate, 3–5 mm (longer than blade); filaments with at least dorsal pair exserted, (longest pair) 3–6 mm; anthers 0.5–1(–1.3) mm. |
Fruiting pedicels | usually curved, rarely straight, (1–)2–5(–7) mm. |
Fruits | slightly to strongly reflexed, sometimes secund, (2.5–)3.5–6(–7) cm × 1.5–2(–2.2) mm; valve apex adnate with style and replum, forming indehiscent tip, often 1-seeded; style (2–)3.5–6(–8) mm. |
Seeds | light brown, 2–3 × 1–1.7(–2) mm; wing 0.3–0.7 mm wide. |
2n | = 28. |
Streptanthella longirostris |
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Phenology | Flowering early Jan-late Jun. |
Habitat | Roadsides, rocky areas, sandy ridges, sagebrush and creosote bush deserts, dry slopes, dry washes, decomposed granitic soil, pinyon-juniper areas, alluvial fans, chaparral, sandstone gravel and outcrops, sandstone hills and cliffs |
Elevation | 60-2200 m (200-7200 ft) |
Distribution |
AZ; CA; CO; ID; MT; NM; NV; OR; UT; WA; WY; Mexico (Baja California, Sonora)
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Discussion | Streptanthella longirostris is most widely distributed in southern California, Nevada, and southern and central Utah, and appears to be restricted elsewhere: Colorado (Mesa, Montezuma, Montrose, San Miguel), Idaho (Butte), Montana (Carbon), New Mexico (San Juan), Washington (Franklin, Grant), and Wyoming (Fremont, Natrona, Sweetwater, Uinta). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 7, p. 700. |
Parent taxa | Brassicaceae > tribe Thelypodieae > Streptanthella |
Synonyms | Arabis longirostris, Euklisia longirostris, Guillenia rostrata, S. longirostris var. derelicta, Streptanthus longirostris, Thelypodium longirostris |
Name authority | (S. Watson) Rydberg: Fl. Rocky Mts., 364. (1917) |
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