Physaria geyeri |
Physaria tenella |
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Geyer's bladderpod, Geyer's twin-pod |
little bladderpod, Moapa 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). | Annuals or, rarely, biennials; with a taproot; densely pubescent, trichomes (simple or stellate, sessile or short-stalked), 4–7-rayed, rays usually furcate, rarely bifurcate, (nearly smooth to finely tuberculate). | ||||
Stems | several from base, decumbent, (arising laterally, unbranched), 1–3 dm. |
several from base, decumbent to erect, (several-branched, frequently stout), 1.5–6 dm. |
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Basal leaves | (numerous); (petiole slender, rarely with a few broad teeth); blade obovate, 3–7 cm, margins entire. |
blade elliptic, (1.5–)3–6.5 cm, margins entire, repand, or shallowly dentate. |
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Cauline leaves | blade oblanceolate, 1.5–3 cm, margins entire. |
(proximal shortly petiolate, distal sessile); blade linear to elliptic or obovate, (0.5–)1–3.5(–4.5) cm, margins entire or repand. |
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Racemes | loose. |
loose. |
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Flowers | sepals oblong, 5–7 mm; petals (yellow to purplish), spatulate, 8–12 mm. |
sepals oblong, lanceolate, or elliptic, (3–)3.5–6(–7.5) mm, (lateral pair subsaccate, median pair thickened apically, cucullate); petals (yellow to orange), suborbicular or obovate, (5–)6.5–8(–11) mm, (narrowing gradually to broad claw, usually widened at base). |
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Fruiting pedicels | (ascending or spreading, slightly curved or sigmoid), 1–2 cm. |
(recurved, sigmoid), 5–15 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. |
(sessile or shortly stipitate), orbicular or obovoid, often slightly compressed, (3.5–)4–6 mm; valves sparsely pubescent, trichomes sessile and stellate, densely pubescent inside, trichomes simple or branched; ovules 4–12 per ovary; style 2–4.5 mm. |
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Seeds | flattened. |
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2n | = 10, 20. |
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Physaria geyeri |
Physaria tenella |
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Phenology | Flowering Feb–May. | |||||
Habitat | Sandy soils, gravel, clayey loam, loose rocky slopes, washes, desert slopes and plains, lava hills, frequently in or near bushes | |||||
Elevation | (0-)600-1900 m ((0-)2000-6200 ft) | |||||
Distribution |
ID; MT; OR; WA
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AZ; CA; NV; UT; Mexico (Sonora)
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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. 663. | ||||
Parent taxa | Brassicaceae > tribe Physarieae > Physaria | Brassicaceae > tribe Physarieae > Physaria | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | Vesicaria geyeri, Coulterina geyeri, Lesquerella geyeri | Lesquerella tenella, Lesquerella gordonii var. sessilis | ||||
Name authority | (Hooker) A. Gray: Gen. Amer. Bor. 1: 162. (1848) | (A. Nelson) O’Kane & Al-Shehbaz: Novon 12: 328. (2002) | ||||
Web links |