Physaria geyeri |
Physaria vitulifera |
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Geyer's bladderpod, Geyer's twin-pod |
roundtip 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). | Perennials; caudex simple or branched, (cespitose); (silvery) pubescent throughout, trichomes several-rayed, rays furcate or bifurcate, (relatively massive, smooth to few-tubercled). | ||||
Stems | several from base, decumbent, (arising laterally, unbranched), 1–3 dm. |
several from base, usually decumbent to ascending, (arising laterally, unbranched, coarse), 1–2 dm. |
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Basal leaves | (numerous); (petiole slender, rarely with a few broad teeth); blade obovate, 3–7 cm, margins entire. |
blade pandurate or obovate, 3–6 cm, margins usually deeply and broadly incised, rarely subentire, (apex obtuse). |
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Cauline leaves | blade oblanceolate, 1.5–3 cm, margins entire. |
blade oblanceolate to spatulate, similar to basal, (3–6 mm wide), margins entire, (apex often somewhat acute). |
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Racemes | loose. |
congested, (elongated in fruit). |
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Flowers | sepals oblong, 5–7 mm; petals (yellow to purplish), spatulate, 8–12 mm. |
sepals oblong, 6–8 mm; petals spatulate, to 10 mm. |
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Fruiting pedicels | (ascending or spreading, slightly curved or sigmoid), 1–2 cm. |
(usually curving upward, sigmoid), 6–10 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. |
didymous, irregular in shape, somewhat angular, inflated, 5–7 × 6–8 mm, (papery, often rigid, base obtuse or truncate, apical sinus broad, open and deep); valves (retaining seeds after dehiscence), pubescent, trichomes spreading, loose; replum oblong, often constricted, as wide as or wider than fruit, apex obtuse; ovules 4 per ovary; style 5–7 mm. |
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Seeds | flattened. |
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2n | = 8, 16. |
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Physaria geyeri |
Physaria vitulifera |
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Phenology | Flowering Apr–Jun. | |||||
Habitat | Rocky hillsides, dry banks, gravel and sand, granitic slopes, soil scree, red shale | |||||
Elevation | 1600-3000 m (5200-9800 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.) |
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Key |
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Source | FNA vol. 7, p. 638. | FNA vol. 7, p. 665. | ||||
Parent taxa | Brassicaceae > tribe Physarieae > Physaria | Brassicaceae > tribe Physarieae > Physaria | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | Vesicaria geyeri, Coulterina geyeri, Lesquerella geyeri | |||||
Name authority | (Hooker) A. Gray: Gen. Amer. Bor. 1: 162. (1848) | Rydberg: Bull. Torrey Bot. Club 28: 278. (1901) | ||||
Web links |