Physaria kingii |
Physaria pachyphylla |
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King bladderpod, King's bladder-pod |
thick-leaf 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 usually simple, rarely branched, (loosely mounded, rosette-like growth); densely (silvery or gray) pubescent, trichomes (sessile), 5-rayed, rays bifurcate, slightly fused near base of main rays, (tuberculate throughout, less over umbo). | ||||||||||||||||||||||||
Stems | few to several from base, prostrate to decumbent or erect, 0.5–2(–4) dm. |
several from base, decumbent to prostrate, (well-exserted beyond basal leaves), 0.2–0.5 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 differentiated from blade); blade (slightly cupped, leathery, nearly 1 mm thick), oblanceolate to orbicular, 1.2–2 cm, margins entire, (apex acute). |
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Cauline leaves | (proximal petiolate, distal sessile); blade obovate or elliptic to spatulate, 0.5–2 cm, margins entire. |
blade spatulate, similar to basal. |
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Racemes | (usually not secund), dense, (sometimes elongated in fruit). |
dense, (subumbellate). |
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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 (pale yellow), elliptic to oblong, 3.5–4.0 mm, (median pair somewhat thickened apically, cucullate); petals lingulate, 5–6 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. |
(ascending, curved), 5–7 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. |
globose or ellipsoid, slightly inflated (with slight apical constriction), 3–6 mm; valves pubescent, trichomes closely appressed; ovules 8 per ovary; style 1–3 mm (shorter than mature fruit). |
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Seeds | flattened (sometimes slightly). |
plump, (oblong). |
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Physaria kingii |
Physaria pachyphylla |
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Phenology | Flowering Jun–Jul. | |||||||||||||||||||||||||
Habitat | Barren areas of mixed white, pink, or reddish limestone and diatomaceous earth | |||||||||||||||||||||||||
Elevation | 1300-1600 m (4300-5200 ft) | |||||||||||||||||||||||||
Distribution |
AZ; CA; ID; NV; OR; UT; nw Mexico
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MT |
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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.) |
Of conservation concern. Physaria pachyphylla is known from the Pryor Mountain Desert near the Wyoming state line. (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. 656. | ||||||||||||||||||||||||
Parent taxa | Brassicaceae > tribe Physarieae > Physaria | Brassicaceae > tribe Physarieae > Physaria | ||||||||||||||||||||||||
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Subordinate taxa | ||||||||||||||||||||||||||
Synonyms | Vesicaria kingii, Lesquerella kingii | |||||||||||||||||||||||||
Name authority | (S. Watson) O’Kane & Al-Shehbaz: Novon 12: 324. (2002) | O’Kane & Grady: Novon 17: 187, fig. 4. (2007) | ||||||||||||||||||||||||
Web links |