Physaria parviflora |
Physaria ovalifolia |
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frosty bladderpod, Piceance bladderpod, Picenace bladderpod |
roundleaf bladderpod |
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Habit | Perennials; caudex simple or branched; densely (silvery) pubescent, trichomes (irregularly radiate), 6–8-rayed, rays furcate or bifurcate, fused at base. | Perennials; caudex simple or branched, (thickened by persistent leaf bases); densely pubescent (foliage usually scabrous), trichomes (sessile or short-stalked), several-rayed, rays furcate near base, (usually strongly umbonate, roughly tuberculate, less so over umbo). | ||||
Stems | several from base, prostrate to decumbent, (usually unbranched, rarely branched distally), 1–3 dm. |
few to several from base, erect or outer decumbent, 0.5–2.5 dm. |
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Basal leaves | (tufted); blade broadly obovate, 1–2 cm, margins entire or with 1 or 2 broad teeth, (apex rounded to obtuse). |
blade suborbicular to elliptic or ovate or deltate, 0.5–2(–6.5) cm, margins entire or shallowly dentate. |
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Cauline leaves | blade oblanceolate to nearly oblong, similar to basal, (base cuneate), margins entire. |
(proximal shortly petiolate, distal usually sessile); blade narrowly elliptic or obovate, (0.5–)1–2.5(–4) cm, margins entire. |
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Racemes | (secund), loose, (elongated in fruit). |
compact, (± subumbellate to densely corymbiform, elongated or not). |
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Flowers | sepals (yellowish), elliptic to lanceolate, (2–)3–4 mm; petals spatulate, (3.9–)5–7 mm. |
sepals ± elliptic, 4.5–7(–8.5) mm, (median pair thickened apically); petals (sometimes white), suborbicular to obovate or obdeltate, 6.5–15 mm, (base narrowing to broad claw, apex sometimes emarginated). |
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Fruiting pedicels | (recurved), 6–8(–12) mm. |
(usually spreading at right angles, sometimes nearly erect, ± straight), 5–15(–20) mm, (stout). |
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Fruits | (usually pendent), elliptic to subglobose, usually slightly compressed (latiseptate), 3–4 mm; valves densely pubescent, sometimes with scattered trichomes inside; ovules 4 per ovary; style ca. 3 mm. |
(sessile or shortly stipitate, less than 1 mm), subglobose to broadly ellipsoid, inflated or slightly compressed (terete or subterete), (4–)5–8(–9) mm; valves (not retaining seeds after dehiscence), glabrous; replum as wide as or wider than fruit; ovules 8–16 per ovary; style 4–8(–9) mm. |
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Seeds | somewhat flattened. |
flattened. |
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Physaria parviflora |
Physaria ovalifolia |
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Phenology | Flowering Jun–Jul. | |||||
Habitat | Shale of steep slopes, rock crevices, ledges, canyon sides, shale-marlstone | |||||
Elevation | 2100-2700 m (6900-8900 ft) | |||||
Distribution |
CO
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CO; KS; NE; NM; OK; TX
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Discussion | Of conservation concern. Physaria parviflora is known from the Parachute Creek Member of the Green River Formation, Rio Blanco County. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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. 657. | FNA vol. 7, p. 655. | ||||
Parent taxa | Brassicaceae > tribe Physarieae > Physaria | Brassicaceae > tribe Physarieae > Physaria | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | Lesquerella parviflora | Lesquerella ovalifolia, Lesquerella engelmannii subsp. ovalifolia | ||||
Name authority | (Rollins) O’Kane & Al-Shehbaz: Novon 12: 326. (2002) | (Rydberg) O’Kane & Al-Shehbaz: Novon 12: 326. (2002) | ||||
Web links |