Physaria arenosa |
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Great Plains bladderpod |
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Habit | Perennials or, rarely, annuals; caudex simple or branched; ± densely pubescent, trichomes (sessile or short-stalked), few-rayed, rays (usually spreading), distinct or slightly fused at base, furcate or bifurcate, (tuberculate). | ||||
Stems | simple or few from base, prostrate or straggling to erect, (sometimes purplish, usually unbranched), (0.5–)1–2(–3) dm. |
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Basal leaves | blade oblanceolate, 1.5–5(–7) cm, margins entire or shallowly dentate, (flat). |
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Cauline leaves | blade elliptic to linear, (0.5–)1–2.5(–3) cm, margins usually entire. |
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Racemes | (secund), dense, (elongated in fruit). |
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Flowers | sepals elliptic or oblong, 4–6(–7) mm, (lateral pair subsaccate, median pair thickened apically, cucullate); petals (often red or lavender when dried), obovate, 6–8.5(–9.5) mm, (narrowing to broad claw). |
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Fruiting pedicels | (usually sharply recurved, sometimes divaricate-spreading or nearly horizontal), 5–15(–20) mm, (stout). |
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Fruits | subglobose, obovoid, or broadly ellipsoid, slightly inflated, (3.5–)4–5.5(–6.5) mm; valves densely pubescent outside, trichomes spreading or closely appressed, rarely sparsely pubescent inside; ovules (4–)8(–10) per ovary; style (slender), 3–5.5(–6.5) mm. |
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Seeds | slightly flattened. |
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Physaria arenosa |
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Distribution |
CO; MT; ND; NE; SD; WY; AB; MB; SK
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Discussion | Subspecies 2 (2 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 7, p. 626. | ||||
Parent taxa | Brassicaceae > tribe Physarieae > Physaria | ||||
Sibling taxa | |||||
Subordinate taxa | |||||
Synonyms | Vesicaria arenosa, Lesquerella arenosa, Lesquerella argentea var. arenosa, Lesquerella ludoviciana var. arenosa | ||||
Name authority | (Richardson) O’Kane & Al-Shehbaz: Novon 12: 321. (2002) | ||||
Web links |