Physaria ovalifolia |
Physaria tumulosa |
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roundleaf bladderpod |
Kodachrome 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). | Perennials; caudex (buried), branched, (forming hard mats); densely pubescent, trichomes several-rayed, rays furcate or bifurcate, (tuberculate). | ||||
Stems | few to several from base, erect or outer decumbent, 0.5–2.5 dm. |
several from base, erect, (unbranched), 0.2–0.3 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. |
(few), similar to cauline. |
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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. |
(petiole not differentiated from blade); blade (somewhat succulent), linear to narrowly oblanceolate, 5–12 mm, margins entire. |
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Racemes | compact, (± subumbellate to densely corymbiform, elongated or not). |
dense, (few-flowered). |
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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), elliptic, 3–4.5 mm; petals (erect or, more commonly, arching), spatulate to oblanceolate, 5.8–7 mm, (claw not or weakly differentiated from blade). |
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Fruiting pedicels | (usually spreading at right angles, sometimes nearly erect, ± straight), 5–15(–20) mm, (stout). |
(ascending to divaricate-ascending, ± straight), 3.5–6 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. |
(coppery or reddish brown in age), broadly ovoid, slightly inflated, 3–4 mm; valves (not retaining seeds after dehiscence), glabrous throughout; replum as wide as or wider than fruit; ovules 4–8 per ovary; style 1.8–3 mm. |
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Seeds | flattened. |
flattened. |
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Physaria ovalifolia |
Physaria tumulosa |
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Phenology | Flowering May–Jun. | |||||
Habitat | Barren white knolls surrounded by sagebrush, pinyon pine, and Utah juniper | |||||
Elevation | 1600-1800 m (5200-5900 ft) | |||||
Distribution |
CO; KS; NE; NM; OK; TX
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UT |
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Discussion | Subspecies 2 (2 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Of conservation concern. Physaria tumulosa is morphologically similar to 55. P. navajoensis of northeastern Arizona and northwestern New Mexico, and differing very subtly. It has been long treated as an infraspecific taxon of P. hitchcockii; unpublished molecular data do not support that disposition. It is found on knolls of the Winsor Member of the Carmel Formation. (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. 664. | ||||
Parent taxa | Brassicaceae > tribe Physarieae > Physaria | Brassicaceae > tribe Physarieae > Physaria | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | Lesquerella ovalifolia, Lesquerella engelmannii subsp. ovalifolia | Lesquerella hitchcockii subsp. tumulosa, Lesquerella tumulosa, P. rubicundula var. tumulosa | ||||
Name authority | (Rydberg) O’Kane & Al-Shehbaz: Novon 12: 326. (2002) | (Barneby) O’Kane & Al-Shehbaz: Novon 12: 328. (2002) | ||||
Web links |