Physaria kingii |
Physaria humilis |
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King bladderpod, King's bladder-pod |
St. Mary's Peak or bitterroot 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, (thickened with persistent leaf bases); densely (silvery) pubescent, trichomes 5- or 6-rayed, rays furcate or 3-branched. | ||||||||||||||||||||||||
Stems | few to several from base, prostrate to decumbent or erect, 0.5–2(–4) dm. |
simple or few to several from base, prostrate, (from below a terminal rosette of leaves, unbranched), 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. |
blade elliptic to broadly ovate or obovate, (1–)1.5–2.5(–3) cm, margins entire, (apex obtuse). |
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Cauline leaves | (proximal petiolate, distal sessile); blade obovate or elliptic to spatulate, 0.5–2 cm, margins entire. |
blade spatulate, 3–7 mm, (base cuneate), margins entire. |
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Racemes | (usually not secund), dense, (sometimes elongated in fruit). |
not loose, (scarcely elongated in fruit, 3–5-flowered). |
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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), narrowly elliptic to narrowly long-triangular, 3.7–5 mm; petals oblanceolate to nearly obovate, 7–8.5 mm, (abruptly tapering to narrow claw). |
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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. |
(straight or slightly curved). |
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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. |
wider than long, apex truncate to shallowly notched, compressed (angustiseptate), 3–4 mm; valves densely pubescent, trichomes ascending to erect, sparsely pubescent inside; ovules 4 per ovary; style 2–3 mm. |
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Seeds | flattened (sometimes slightly). |
plump, (slightly compressed). |
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Physaria kingii |
Physaria humilis |
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Phenology | Flowering Jun-early Aug. | |||||||||||||||||||||||||
Habitat | Steep slopes, dry summits, rocky fellfields, dry ledges | |||||||||||||||||||||||||
Elevation | 2700-2900 m (8900-9500 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 humilis is found in metamorphosed rock and detritus on the peaks of the Bitterroot Mountains. (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. 644. | ||||||||||||||||||||||||
Parent taxa | Brassicaceae > tribe Physarieae > Physaria | Brassicaceae > tribe Physarieae > Physaria | ||||||||||||||||||||||||
Sibling taxa | ||||||||||||||||||||||||||
Subordinate taxa | ||||||||||||||||||||||||||
Synonyms | Vesicaria kingii, Lesquerella kingii | Lesquerella humilis | ||||||||||||||||||||||||
Name authority | (S. Watson) O’Kane & Al-Shehbaz: Novon 12: 324. (2002) | (Rollins) O’Kane & Al-Shehbaz: Novon 12: 324. (2002) | ||||||||||||||||||||||||
Web links |