Physaria geyeri |
Physaria angustifolia |
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Geyer's bladderpod, Geyer's twin-pod |
threadleaf bladderpod |
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Habit | Perennials; caudex usually simple, (cespitose); (silvery) pubescent throughout, trichomes (sessile), 6–8-rayed, rays mostly furcate, (tuberculate to nearly smooth). | Annuals; with a fine taproot; ± densely pubescent, trichomes several-rayed, rays distinct or fused at base, bifurcate, (prominently tuberculate throughout). | ||||
Stems | several from base, decumbent, (arising laterally, unbranched), 1–3 dm. |
simple or few to several from base, erect, (sometimes branched), to 4 dm. |
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Basal leaves | (numerous); (petiole slender, rarely with a few broad teeth); blade obovate, 3–7 cm, margins entire. |
blade elliptic to rhombic, 3–8 cm, (base narrowing gradually to petiole), margins entire, repand, coarsely toothed, or pinnatifid. |
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Cauline leaves | blade oblanceolate, 1.5–3 cm, margins entire. |
(proximal often shortly petiolate, distal sessile); blade linear or narrowly obovate, 1.5–6(–10) cm, margins entire, repand, or shallowly toothed. |
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Racemes | loose. |
usually loose. |
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Flowers | sepals oblong, 5–7 mm; petals (yellow to purplish), spatulate, 8–12 mm. |
sepals elliptic or ovate, 4–6 mm, (lateral pair usually subsaccate); petals obovate to obdeltate, 6–10 mm, (apex often emarginate). |
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Fruiting pedicels | (ascending or spreading, slightly curved or sigmoid), 1–2 cm. |
(usually divaricate, sometimes horizontal, straight or slightly curved), 8–20 mm. |
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Fruits | obcordate, angustiseptate, somewhat inflated, (not bladdery), 5–7 × 6–9 mm, (papery, basal sinus absent, apical sinus broad and open); valves (retaining seeds after dehiscence), loosely pubescent, trichomes spreading; replum ovate, 5–7 mm, as wide as or wider than fruit, apex acute or obtuse; ovules 4–6 per ovary; style 5–7 mm. |
not didymous, ± globose, slightly inflated, 4–6 mm; valves (not retaining seeds after dehiscence), glabrous throughout; replum as wide as or wider than fruit; ovules 4 per ovary; style 2–3.5 mm; (stigma expanded). |
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Seeds | flattened, (margined). |
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2n | = 10. |
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Physaria geyeri |
Physaria angustifolia |
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Phenology | Flowering Apr(-May). | |||||
Habitat | Shallow limestone-derived soils, sometimes spreading to disturbed sites | |||||
Elevation | 90-300 m (300-1000 ft) | |||||
Distribution |
ID; MT; OR; WA
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OK; TX |
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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. 638. | FNA vol. 7, p. 625. | ||||
Parent taxa | Brassicaceae > tribe Physarieae > Physaria | Brassicaceae > tribe Physarieae > Physaria | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | Vesicaria geyeri, Coulterina geyeri, Lesquerella geyeri | Vesicaria angustifolia, Lesquerella angustifolia, Lesquerella longifolia | ||||
Name authority | (Hooker) A. Gray: Gen. Amer. Bor. 1: 162. (1848) | (Nuttall ex Torrey & A. Gray) O’Kane & Al-Shehbaz: Novon 12: 321. (2002) | ||||
Web links |