Physaria ovalifolia |
Physaria condensata |
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roundleaf bladderpod |
tuft twinpod |
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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). | Perennials; caudex usually simple, rarely branched, (enlarged with persistent leaf bases, cespitose); (silvery) pubescent throughout, trichomes several-rayed, rays typically furcate, (fused at base, arms slender, tuberculate throughout). | ||||
Stems | few to several from base, erect or outer decumbent, 0.5–2.5 dm. |
several from base, decumbent to ascending, (arising laterally beneath a dense rosette), less than 0.1 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. |
(petiole slender); blade (horizontal on the ground), obovate, 0.5–1.5 cm (width 4–8 mm, base tapering abruptly to petiole), margins entire, (apex usually acute, surfaces silvery from a dense incrustation of appressed, stellate trichomes). |
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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. |
blade oblanceolate, 0.5–1 cm (width 2–3 mm), margins entire, (surfaces densely stellate pubescent). |
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Racemes | compact, (± subumbellate to densely corymbiform, elongated or not). |
congested, (subumbellate, often almost sessile, barely exceeding basal leaves). |
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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). |
sepals (yellowish green), narrowly lanceolate, 4–5 mm; petals (erect), oblanceolate, 6–7 mm, (claw weakly differentiated from blade). |
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Fruiting pedicels | (usually spreading at right angles, sometimes nearly erect, ± straight), 5–15(–20) mm, (stout). |
(divaricate, straight), 5–10 mm. |
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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. |
didymous, ovate, inflated, 4.8–6 × 6–10 mm, (papery, basal and apical sinuses deep); valves (retaining seeds after dehiscence), pubescent, trichomes loosely spreading; replum obovate, 3–4 mm, as wide as or wider than fruit; ovules 8 per ovary (2–4 abortive); style 4–6 mm. |
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Seeds | flattened. |
flattened. |
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Physaria ovalifolia |
Physaria condensata |
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Phenology | Flowering May–Jun. | |||||
Habitat | Calcareous knolls and ridges, clay banks, limey slopes, shaley hills, clay patches | |||||
Elevation | 1800-2400 m (5900-7900 ft) | |||||
Distribution |
CO; KS; NE; NM; OK; TX
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WY |
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Discussion | Subspecies 2 (2 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Of conservation concern. (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. 631. | ||||
Parent taxa | Brassicaceae > tribe Physarieae > Physaria | Brassicaceae > tribe Physarieae > Physaria | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | Lesquerella ovalifolia, Lesquerella engelmannii subsp. ovalifolia | |||||
Name authority | (Rydberg) O’Kane & Al-Shehbaz: Novon 12: 326. (2002) | Rollins: Rhodora 41: 407, plate 556, figs. 1, 9, 10. (1939) | ||||
Web links |