Physaria rectipes |
Physaria obdeltata |
|
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straight bladderpod |
Middle Butte bladderpod |
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Habit | Perennials; (loose, spreading); caudex simple or branched; densely pubescent, trichomes (subsessile), 4–6-rayed, rays furcate or bifurcate, (moderately tuberculate over arms, less so or smooth over center). | 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, ascending or prostrate, (arising laterally, also from within basal leaves, usually unbranched, rarely branched), 0.5–3(–6) dm. |
simple from base, prostrate to decumbent, (unbranched, from within and below leaf clusters, slender), 0.2–0.8 dm. |
Basal leaves | blade narrowly oblanceolate or broadly elliptic, 1–7(–12) cm, margins entire or shallowly toothed, sometimes repand, (inner blades usually flattened in age, surfaces often gray-green, scabrous). |
(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 | (usually secund); blade spatulate or obovate, 1–2.5(–4.5) cm, margins entire or shallowly toothed, (flat or involute). |
blade nearly linear, to 1.5 cm, margins entire. |
Racemes | somewhat crowded (to moderately elongated in fruit, exceeding basal leaves). |
dense, (subcorymbose). |
Flowers | sepals broadly elliptic or oblong, 4–7.5(–9) mm, (median pair thickened apically, cucullate); petals cuneate or obovate, 7–10(–16) mm, (tapering gradually to broad claw). |
sepals (yellow-green), lanceolate, (2.5–)3.5–4.5 mm; petals spatulate to oblanceolate, 4–6.5 mm. |
Fruiting pedicels | (often divaricate-spreading and straight, or horizontal and loosely sigmoid, sometimes slightly recurved), 5–15 mm. |
(recurved), 5–8 mm. |
Fruits | subglobose to ovoid or ellipsoid, sometimes compressed, (4–)5–7(–9) mm; valves sparsely pubescent, trichomes appressed or erect, sometimes sparsely pubescent inside; ovules (8–)12–16(–20) per ovary; style 2–7 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 | somewhat flattened. |
plump, (mucilaginous when wetted). |
2n | = 10 + 2, 18, 20, ± 40. |
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Physaria rectipes |
Physaria obdeltata |
|
Phenology | Flowering May–Jul. | Flowering Jun(-Jul). |
Habitat | Sandy soils, limey knolls, rocky hills, clay hillsides, dry ridges, weathered rocks, gravelly outwashes, stony slopes, pinyon-juniper woodlands | Clayey, silty, or gravelly soils, overlaying basalt lava flows, silty playas, sagebrush, barren areas |
Elevation | 1500-2600 m (4900-8500 ft) | 1300-1700 m (4300-5600 ft) |
Distribution |
AZ; CO; NM; UT
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ID |
Discussion | As here circumscribed, Physaria rectipes remains heterogeneous and may represent more than one taxon, even after the recent removal of P. pulvinata. (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. 660. | FNA vol. 7, p. 654. |
Parent taxa | Brassicaceae > tribe Physarieae > Physaria | Brassicaceae > tribe Physarieae > Physaria |
Sibling taxa | ||
Synonyms | Lesquerella rectipes | Lesquerella obdeltata |
Name authority | (Wooton & Standley) O’Kane & Al-Shehbaz: Novon 12: 327. (2002) | (Rollins) O’Kane & Al-Shehbaz: Novon 12: 326. (2002) |
Web links |