Physaria pycnantha |
Physaria obdeltata |
|
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mountain-view bladderpod |
Middle Butte bladderpod |
|
Habit | Perennials; caudex branched, (densely cespitose and forming hemispheric mounds); densely pubescent, trichomes 5-rayed, rays bifurcate near base, fused at base, (strongly tuberculate throughout). | Perennials; caudex simple; densely pubescent, trichomes (appressed in layers), 5–7-rayed, rays usually bifurcate, sometimes furcate, (thickened toward center). |
Stems | few to several from base, erect, (usually exceeding basal leaves), 0.3–0.7 dm. |
simple from base, prostrate to decumbent, (unbranched, from within and below leaf clusters, slender), 0.2–0.8 dm. |
Basal leaves | blade linear-spatulate, 1.5–4 cm, (base narrowed gradually to petiole), margins entire. |
(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 | blade spatulate, similar to basal. |
blade nearly linear, to 1.5 cm, margins entire. |
Racemes | crowded in distal 1/3, (4–10-flowered). |
dense, (subcorymbose). |
Flowers | sepals (pale yellow), oblong to elliptic, 3–4 mm, (median pair usually thickened apically, cucullate); petals (sometimes with slight tinge of orange basally), lingulate, 4–6 mm. |
sepals (yellow-green), lanceolate, (2.5–)3.5–4.5 mm; petals spatulate to oblanceolate, 4–6.5 mm. |
Fruiting pedicels | (loosely to strongly sigmoid), 6–10 mm. |
(recurved), 5–8 mm. |
Fruits | ellipsoid, slightly inflated (somewhat latiseptate), 4–5 mm, (apex acute); valves pubescent, trichomes erect, appearing slightly shaggy; ovules 4–8 per ovary; styles 2.5–3 mm, (shorter than mature fruits). |
(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, convex on outer side. |
plump, (mucilaginous when wetted). |
Physaria pycnantha |
Physaria obdeltata |
|
Phenology | Flowering late May–Jun(-Jul). | Flowering Jun(-Jul). |
Habitat | Dry, windswept knolls of limestone gravel, with other cushion-forming plants | Clayey, silty, or gravelly soils, overlaying basalt lava flows, silty playas, sagebrush, barren areas |
Elevation | 1600-2300 m (5200-7500 ft) | 1300-1700 m (4300-5600 ft) |
Distribution |
ID; MT
|
ID |
Discussion | Physaria pycnantha is morphologically similar to 56. P. nelsonii. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Physaria obdeltata is known from the eastern Snake River Plain. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 7, p. 659. | FNA vol. 7, p. 654. |
Parent taxa | Brassicaceae > tribe Physarieae > Physaria | Brassicaceae > tribe Physarieae > Physaria |
Sibling taxa | ||
Synonyms | Lesquerella obdeltata | |
Name authority | Grady & O’Kane: Novon 17: 188, fig. 5. (2007) | (Rollins) O’Kane & Al-Shehbaz: Novon 12: 326. (2002) |
Web links |