Physaria geyeri |
Physaria saximontana |
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Geyer's bladderpod, Geyer's twin-pod |
Fremont County twinpod, Rocky Mountain or Fremont County 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 usually simple; (silvery) pubescent throughout, trichome rays furcate. | ||||||||
Stems | several from base, decumbent, (arising laterally, unbranched), 1–3 dm. |
several from base, prostrate to decumbent, 0.3–1 dm. |
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Basal leaves | (numerous); (petiole slender, rarely with a few broad teeth); blade obovate, 3–7 cm, margins entire. |
(rosulate; petiole winged); blade orbicular to broadly obovate, 1.5–3 cm, margins entire or with broad, obscure toothlike angles each side at apex, (apex obtuse, surfaces densely pubescent, trichomes appressed). |
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Cauline leaves | blade oblanceolate, 1.5–3 cm, margins entire. |
blade broadly spatulate to linear-oblanceolate, 1–1.5 cm, margins entire. |
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Racemes | loose. |
condensed, (subumbellate to slightly more elongated, few-flowered). |
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Flowers | sepals oblong, 5–7 mm; petals (yellow to purplish), spatulate, 8–12 mm. |
sepals (yellowish, often with some purple), narrowly lanceolate, 5–6 mm; petals spatulate, 7.3–9.2 mm, (not clawed). |
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Fruiting pedicels | (ascending or spreading, slightly curved or sigmoid), 1–2 cm. |
(divaricate-ascending, straight to slightly curved), 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, suborbicular, deeply bilobed, inflated in age, 10–12 × 12–15 mm, (papery, basal sinus absent or obsolete, apical sinus deep); valves (retaining seeds after dehiscence), densely pubescent, trichomes spreading, (ovaries and immature fruit downy); replum narrowly ovate to broadly oblong, not narrowed at middle, as wide as or wider than fruit, apex acute to obtuse; ovules 4 per ovary; style 3–7 mm. |
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Seeds | flattened. |
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Physaria geyeri |
Physaria saximontana |
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Distribution |
ID; MT; OR; WA
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MT; WY |
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Discussion | Subspecies 2 (2 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Subspecies 2 (2 in the flora). Physaria saximontana (especially subsp. dentata) is morphologically similar to 22. P. didymocarpa. (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. 661. | ||||||||
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) | Rollins: Contr. Gray Herb. 214: 13. (1984) | ||||||||
Web links |