Physaria kingii |
Physaria oregona |
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King bladderpod, King's bladder-pod |
Oregon twin-pod |
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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, (cespitose); (silvery) pubescent throughout, trichomes (stalked), few-rayed, rays furcate or imperfectly so, (tuberculate throughout). | ||||||||||||||||||||||||
Stems | few to several from base, prostrate to decumbent or erect, 0.5–2(–4) dm. |
several from base, erect or somewhat decumbent, (unbranched), 1–3.5 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. |
(petiole slender, usually incised or with broad teeth along petiole); blade obovate, 4–6 cm, margins entire. |
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Cauline leaves | (proximal petiolate, distal sessile); blade obovate or elliptic to spatulate, 0.5–2 cm, margins entire. |
blade oblanceolate or broader, 1.5–2.5 cm, margins entire or sparsely dentate, (apex acute). |
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Racemes | (usually not secund), dense, (sometimes elongated in fruit). |
somewhat loose, (5–15 cm). |
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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 oblong, 5–7 mm; petals (lemon yellow), spatulate, 9–12 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. |
(spreading or ascending, curved, fruits not pendent), 10–20 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. |
didymous, obreniform, moderately inflated, angustispetate, (8–)10–12(–15) × 10–14(–16) mm, (papery, not keeled, basal sinus absent, apical sinus broad and open); valves (retaining seeds after dehiscence, rounded or irregular), loosely pubescent, trichomes spreading; replum broadly lanceolate, as wide as or wider than fruit, apex acute; ovules 8 per ovary; style 1–2 mm. |
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Seeds | flattened (sometimes slightly). |
flattened. |
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2n | = 8. |
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Physaria kingii |
Physaria oregona |
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Phenology | Flowering Apr–Jun. | |||||||||||||||||||||||||
Habitat | Gravelly banks, stream shores, rocky slopes, dry hillsides, serpentine soils | |||||||||||||||||||||||||
Elevation | 900-1900 m (3000-6200 ft) | |||||||||||||||||||||||||
Distribution |
AZ; CA; ID; NV; OR; UT; nw Mexico
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ID; OR; WA
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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.) |
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Key |
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Source | FNA vol. 7, p. 645. | FNA vol. 7, p. 655. | ||||||||||||||||||||||||
Parent taxa | Brassicaceae > tribe Physarieae > Physaria | Brassicaceae > tribe Physarieae > Physaria | ||||||||||||||||||||||||
Sibling taxa | ||||||||||||||||||||||||||
Subordinate taxa | ||||||||||||||||||||||||||
Synonyms | Vesicaria kingii, Lesquerella kingii | Coulterina oregona, Lesquerella oregona | ||||||||||||||||||||||||
Name authority | (S. Watson) O’Kane & Al-Shehbaz: Novon 12: 324. (2002) | S. Watson: Proc. Amer. Acad. Arts 17: 363. (1882) | ||||||||||||||||||||||||
Web links |