Physaria kingii |
Physaria obdeltata |
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King bladderpod, King's bladder-pod |
Middle Butte bladderpod |
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Habit | Perennials; caudex usually simple, sometimes branched, (not thickened); usually densely pubescent, trichomes (sessile or short-stalked), 3–7-rayed, rays distinct or slightly fused at base, typically furcate near base, bifurcate or 3-partite, (not to slightly umbonate, smooth or moderately to strongly tuberculate). | 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, prostrate to decumbent or erect, 0.5–2(–4) dm. |
simple from base, prostrate to decumbent, (unbranched, from within and below leaf clusters, slender), 0.2–0.8 dm. |
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Basal leaves | blade suborbicular to narrowly or broadly oblanceolate to broadly elliptic or rhombic, (1.2–)2–6(–8) cm, (base usually abruptly narrowed to petiole), margins entire, sinuate, or lobed. |
(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). |
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Cauline leaves | (proximal petiolate, distal sessile); blade obovate or elliptic to spatulate, 0.5–2 cm, margins entire. |
blade nearly linear, to 1.5 cm, margins entire. |
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Racemes | (usually not secund), dense, (sometimes elongated in fruit). |
dense, (subcorymbose). |
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Flowers | sepals lanceolate, 4–6(–7) mm; petals (yellow, cream-yellow, cream-white, or white), obovate to oblanceolate, 6–13 mm, (claw weakly differentiated from blade). |
sepals (yellow-green), lanceolate, (2.5–)3.5–4.5 mm; petals spatulate to oblanceolate, 4–6.5 mm. |
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Fruiting pedicels | (erect to divaricate-ascending or recurved, erect in distal 1/3, usually sigmoid, sometimes straight or slightly curved), 4.5–10(–15) mm. |
(recurved), 5–8 mm. |
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Fruits | (sessile or substipitate), subglobose, obovoid, or ellipsoid, compressed (sometimes slightly angustiseptate), 3–9 mm, (rigid, apex truncate, retuse, or rounded-acute); valves sparsely or densely pubescent, sometimes sparsely pubescent inside; (septum sometimes fenestrate, perforate, or obsolete); ovules 4–16 per ovary; style 1–9 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). |
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Seeds | flattened (sometimes slightly). |
plump, (mucilaginous when wetted). |
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Physaria kingii |
Physaria obdeltata |
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Phenology | Flowering Jun(-Jul). | |||||||||||||||||||||||||
Habitat | Clayey, silty, or gravelly soils, overlaying basalt lava flows, silty playas, sagebrush, barren areas | |||||||||||||||||||||||||
Elevation | 1300-1700 m (4300-5600 ft) | |||||||||||||||||||||||||
Distribution |
AZ; CA; ID; NV; OR; UT; nw Mexico
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ID |
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Discussion | Subspecies 7 (7 in the flora). The Physaria kingii complex is in need of further study. It is widespread in the western United States, mostly in montane environments. This treatment recognizes a highly variable species with generally well-marked, geographically coherent subspecies. Hybridization may be involved in some of the subspecies, especially in subsp. kaibabensis, where molecular data indicate intra-individual genetic variation (pers. obs.). (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.) |
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Key |
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Source | FNA vol. 7, p. 645. | FNA vol. 7, p. 654. | ||||||||||||||||||||||||
Parent taxa | Brassicaceae > tribe Physarieae > Physaria | Brassicaceae > tribe Physarieae > Physaria | ||||||||||||||||||||||||
Sibling taxa | ||||||||||||||||||||||||||
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Synonyms | Vesicaria kingii, Lesquerella kingii | Lesquerella obdeltata | ||||||||||||||||||||||||
Name authority | (S. Watson) O’Kane & Al-Shehbaz: Novon 12: 324. (2002) | (Rollins) O’Kane & Al-Shehbaz: Novon 12: 326. (2002) | ||||||||||||||||||||||||
Web links |