Physaria geyeri |
Physaria congesta |
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Geyer's bladderpod, Geyer's twin-pod |
Dudley bluffs 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). | Perennials; (relatively diminutive, strongly condensed); caudex (buried), simple or branched, (stout, thatched, thickened with persistent leaf bases); densely pubescent, trichomes (appressed, stiff), 4- or 5-rayed, rays fused at center, (mostly bifurcate). | ||||
Stems | several from base, decumbent, (arising laterally, unbranched), 1–3 dm. |
simple or few from base, decumbent to ascending, (arising laterally from a tight hemispherical tuft of leaves), to 0.15 dm. |
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Basal leaves | (numerous); (petiole slender, rarely with a few broad teeth); blade obovate, 3–7 cm, margins entire. |
similar to cauline, (erect, surfaces silvery). |
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Cauline leaves | blade oblanceolate, 1.5–3 cm, margins entire. |
(ascending, subsessile); blade linear-oblanceolate, (0.6–)0.8–1.3(–1.5) cm, margins entire, (apex acute to narrowly obtuse). |
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Racemes | loose. |
strongly congested, (often sessile or nearly so, lateral to leaves). |
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Flowers | sepals oblong, 5–7 mm; petals (yellow to purplish), spatulate, 8–12 mm. |
sepals (loosely erect), narrowly oblong, 3–4 mm; petals spatulate, 5–6 mm. |
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Fruiting pedicels | (ascending or spreading, slightly curved or sigmoid), 1–2 cm. |
(erect or ascending, straight to slightly curved), 3–6 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. |
ovate, compressed (latiseptate) on margins and apically, 4–5 mm; valves pubescent, trichomes densely appressed; ovules 4 per ovary; style 1–1.5 mm. |
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Seeds | plump. |
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Physaria geyeri |
Physaria congesta |
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Phenology | Flowering Apr–May. | |||||
Habitat | Barren knolls with pinyon-juniper | |||||
Elevation | 1800-2100 m (5900-6900 ft) | |||||
Distribution |
ID; MT; OR; WA
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CO |
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Discussion | Subspecies 2 (2 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Of conservation concern. Physaria congesta is found on white, decomposed shale of the Thirteenmile Creek Tongue of the Green River Formation. (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. 632. | ||||
Parent taxa | Brassicaceae > tribe Physarieae > Physaria | Brassicaceae > tribe Physarieae > Physaria | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | Vesicaria geyeri, Coulterina geyeri, Lesquerella geyeri | Lesquerella congesta | ||||
Name authority | (Hooker) A. Gray: Gen. Amer. Bor. 1: 162. (1848) | (Rollins) O’Kane & Al-Shehbaz: Novon 12: 322. (2002) | ||||
Web links |