Physaria purpurea |
Physaria obdeltata |
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rose bladderpod |
Middle Butte bladderpod |
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Habit | Perennials; caudex simple, (usually woody); densely pubescent, trichomes (sessile or short-stalked), several-rayed, rays simple or furcate, (smooth or tuberculate). | Perennials; caudex simple; densely pubescent, trichomes (appressed in layers), 5–7-rayed, rays usually bifurcate, sometimes furcate, (thickened toward center). |
Stems | simple from base, erect, (unbranched, sparsely leaved), to 7 dm. |
simple from base, prostrate to decumbent, (unbranched, from within and below leaf clusters, slender), 0.2–0.8 dm. |
Basal leaves | blade elliptic or obovate to oblong, 4–15 cm, margins entire, dentate, or lyrate-pinnatifid. |
(tufted, erect or ascending, silvery); blade linear to oblanceolate or (outer) oblanceolate to obovate or rhombic, 1.5–3.3 cm, (base sometimes subhastate), margins entire or dentate, (often involute). |
Cauline leaves | (proximal often narrowed to short petiole, distal sessile); blade broadly elliptic to obovate or rhombic, 0.5–3(–5) cm, margins entire. |
blade nearly linear, to 1.5 cm, margins entire. |
Racemes | dense or slightly elongated. |
dense, (subcorymbose). |
Flowers | sepals elliptic to ovate, 3.5–6(–7) mm, (median pair usually thickened apically, cucullate); petals (white, often purple-veined, fading purplish), suborbicular to obovate, obdeltate, or cuneate, 4.5–10(–12) mm, (often narrowed to broad claw, apex emarginate, less frequently claw undifferentiated from blade). |
sepals (yellow-green), lanceolate, (2.5–)3.5–4.5 mm; petals spatulate to oblanceolate, 4–6.5 mm. |
Fruiting pedicels | (spreading or recurved, loosely sigmoid), 5–25 mm. |
(recurved), 5–8 mm. |
Fruits | (pendent or horizontal, sessile or substipitate), subglobose to broadly ellipsoid, not or slightly inflated, (4–)5–8 mm; valves (not retaining seeds after dehiscence), glabrous throughout; replum as wide as or wider than fruit; ovules 4–8(–12) per ovary; style 1–3(–4) mm. |
(usually pendent), obdeltate, compressed (angustiseptate), 2–4 mm, (wider than long, base tapered to acute angle, apex truncate with inflated shoulders); valves densely pubescent; (septum obsolete or with a narrow fringe inside of replum, funicles attached close to replum apex); ovules 4 per ovary; style 2–4 mm, (slender). |
Seeds | flattened. |
plump, (mucilaginous when wetted). |
2n | = 18, 36. |
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Physaria purpurea |
Physaria obdeltata |
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Phenology | Flowering Mar–Oct. | Flowering Jun(-Jul). |
Habitat | Rocky draws, canyons, stony hills, ridges, rock crevices on limestone ledges, lava cliffs, sand and gravel of dry stream beds, rocky slopes, talus, shade of bushes or cactus clumps | Clayey, silty, or gravelly soils, overlaying basalt lava flows, silty playas, sagebrush, barren areas |
Elevation | 400-2400 m (1300-7900 ft) | 1300-1700 m (4300-5600 ft) |
Distribution |
AZ; NM; TX; Mexico (Chihuahua, Coahuila, Sonora)
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ID |
Discussion | Physaria obdeltata is known from the eastern Snake River Plain. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 7, p. 659. | FNA vol. 7, p. 654. |
Parent taxa | Brassicaceae > tribe Physarieae > Physaria | Brassicaceae > tribe Physarieae > Physaria |
Sibling taxa | ||
Synonyms | Vesicaria purpurea, Lesquerella purpurea, Lesquerella purpurea subsp. foliosa, Lesquerella purpurea var. foliosa, P. purpurea var. foliosa | Lesquerella obdeltata |
Name authority | (A. Gray) O’Kane & Al-Shehbaz: Novon 12: 327. (2002) | (Rollins) O’Kane & Al-Shehbaz: Novon 12: 326. (2002) |
Web links |