Physaria brassicoides |
Physaria geyeri |
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double bladderpod, double twinpod |
Geyer's bladderpod, Geyer's twin-pod |
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Habit | Perennials; (somewhat compact); caudex branched, (relatively large); (silvery) pubescent throughout, trichomes (sessile), several-rayed, rays furcate, (slightly umbonate, tuberculate throughout). | 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 to ascending (arising laterally, unbranched, stout), (0.2–)0.5–1.7 dm. |
several from base, decumbent, (arising laterally, unbranched), 1–3 dm. |
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Basal leaves | (petiole somewhat winged); blades orbicular to obovate, 2–6 cm (width 1–2.5 cm, thick), margins usually repand, rarely entire, (adaxial surface scurfy). |
(numerous); (petiole slender, rarely with a few broad teeth); blade obovate, 3–7 cm, margins entire. |
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Cauline leaves | blade oblanceolate to broadly spatulate, 1–2 cm (width 3–5 mm), margins entire, (apex obtuse to subacute). |
blade oblanceolate, 1.5–3 cm, margins entire. |
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Racemes | moderately dense (or elongated). |
loose. |
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Flowers | sepals linear-oblong, 6–8 mm; petals spatulate, 9–12 mm. |
sepals oblong, 5–7 mm; petals (yellow to purplish), spatulate, 8–12 mm. |
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Fruiting pedicels | (divergent, straight to somewhat curved or sigmoid), 5–12 mm. |
(ascending or spreading, slightly curved or sigmoid), 1–2 cm. |
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Fruits | (erect), didymous, cordate, moderately inflated, (6–)10–20 × 10–23 mm, (papery, base obtuse or with obscure sinus, apical sinus deep, broad); valves (retaining seeds after dehiscence), densely and loosely pubescent, trichomes spreading; replum linear-oblong, constricted, as wide as or wider than fruit; ovules 4 per ovary; style 4–5(–9) mm. |
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. |
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Seeds | plump, (broad). |
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2n | = 8, 16. |
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Physaria brassicoides |
Physaria geyeri |
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Phenology | Flowering May–Jun. | |||||
Habitat | Bare hillsides, dry gravel and clay soil, badlands, clay knolls, banks | |||||
Elevation | 900-1400 m (3000-4600 ft) | |||||
Distribution |
CO; MT; ND; NE; SD; WY
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ID; MT; OR; WA
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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. 628. | FNA vol. 7, p. 638. | ||||
Parent taxa | Brassicaceae > tribe Physarieae > Physaria | Brassicaceae > tribe Physarieae > Physaria | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | Vesicaria geyeri, Coulterina geyeri, Lesquerella geyeri | |||||
Name authority | Rydberg: Bull. Torrey Bot. Club 29: 237. (1902) | (Hooker) A. Gray: Gen. Amer. Bor. 1: 162. (1848) | ||||
Web links |