Physaria geyeri |
Physaria geyeri subsp. purpurea |
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Geyer's bladderpod, Geyer's twin-pod |
purple twinpod |
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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). | |||||
Stems | several from base, decumbent, (arising laterally, unbranched), 1–3 dm. |
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Basal leaves | (numerous); (petiole slender, rarely with a few broad teeth); blade obovate, 3–7 cm, margins entire. |
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Cauline leaves | blade oblanceolate, 1.5–3 cm, margins entire. |
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Racemes | loose. |
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Flowers | sepals oblong, 5–7 mm; petals (yellow to purplish), spatulate, 8–12 mm. |
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Fruiting pedicels | (ascending or spreading, slightly curved or sigmoid), 1–2 cm. |
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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. |
replum apex obtuse; ovules usually 6 per ovary. |
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Trichomes | nearly smooth. |
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Petals | purplish or light yellow, drying purplish. |
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2n | = 8. |
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Physaria geyeri |
Physaria geyeri subsp. purpurea |
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Phenology | Flowering May–Jul. | |||||
Habitat | Steep marly hillsides, steep slides, fine talus, scree, sandy road cuts | |||||
Elevation | 1200-2200 m (3900-7200 ft) | |||||
Distribution |
ID; MT; OR; WA
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ID |
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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. 639. | ||||
Parent taxa | Brassicaceae > tribe Physarieae > Physaria | Brassicaceae > tribe Physarieae > Physaria > Physaria geyeri | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | Vesicaria geyeri, Coulterina geyeri, Lesquerella geyeri | P. geyeri var. purpurea | ||||
Name authority | (Hooker) A. Gray: Gen. Amer. Bor. 1: 162. (1848) | (Rollins) O’Kane: Novon 17: 380. (2007) | ||||
Web links |