Physaria ovalifolia |
Physaria ovalifolia subsp. alba |
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roundleaf bladderpod |
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Habit | 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). | |||||
Caudex | usually simple. |
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Stems | few to several from base, erect or outer decumbent, 0.5–2.5 dm. |
usually few from base, erect or outer decumbent, 1.5–2.5 dm. |
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Basal leaves | blade suborbicular to elliptic or ovate or deltate, 0.5–2(–6.5) cm, margins entire or shallowly dentate. |
blade (outer) often broadly elliptic, base narrowing gradually to petiole, margins sinuate to dentate (or blade deltate, less than 1 cm, base abruptly narrowed to petiole). |
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Cauline leaves | (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 | compact, (± subumbellate to densely corymbiform, elongated or not). |
usually elongated. |
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Flowers | 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 | (usually spreading at right angles, sometimes nearly erect, ± straight), 5–15(–20) mm, (stout). |
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Fruits | (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 | flattened. |
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Petals | white, (9–)11–15 mm, often 2 times as long as sepals. |
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2n | = 12. |
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Physaria ovalifolia |
Physaria ovalifolia subsp. alba |
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Phenology | Flowering Mar–May, usually in Apr. | |||||
Habitat | Limey and gravelly knolls, grassland hills, limestone hillsides and breaks, gypsum, shale, rocky calcareous soils, stony areas, prairie pastures, limestone roadcuts | |||||
Elevation | 150-700 m (500-2300 ft) | |||||
Distribution |
CO; KS; NE; NM; OK; TX
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KS; OK |
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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. 655. | FNA vol. 7, p. 656. | ||||
Parent taxa | Brassicaceae > tribe Physarieae > Physaria | Brassicaceae > tribe Physarieae > Physaria > Physaria ovalifolia | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | Lesquerella ovalifolia, Lesquerella engelmannii subsp. ovalifolia | Lesquerella ovalifolia var. alba, Lesquerella engelmannii subsp. alba, Lesquerella ovalifolia subsp. alba, P. ovalifolia var. alba | ||||
Name authority | (Rydberg) O’Kane & Al-Shehbaz: Novon 12: 326. (2002) | (Goodman) O’Kane & Al-Shehbaz: Novon 12: 326. (2002) | ||||
Web links |