Physaria multiceps |
Physaria humilis |
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manyhead bladderpod |
St. Mary's Peak or bitterroot bladderpod |
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Habit | Perennials; caudex (buried), branched, (not thickened); densely pubescent, trichomes (sessile or short-stalked), 5–8-rayed, rays furcate or bifurcate, (umbonate, rough to finely tuberculate throughout). | Perennials; caudex simple, (thickened with persistent leaf bases); densely (silvery) pubescent, trichomes 5- or 6-rayed, rays furcate or 3-branched. |
Stems | several from base, prostrate, (slender, sparsely pubescent), 0.5–2 dm. |
simple or few to several from base, prostrate, (from below a terminal rosette of leaves, unbranched), 0.2–0.5 dm. |
Basal leaves | blade obovate to narrowly elliptic, 1.5–6 cm, margins usually entire, rarely shallowly dentate, (surfaces densely pubescent, often silvery). |
blade elliptic to broadly ovate or obovate, (1–)1.5–2.5(–3) cm, margins entire, (apex obtuse). |
Cauline leaves | blade oblanceolate to spatulate, 0.5–1 cm, margins entire, (surfaces often sparsely pubescent). |
blade spatulate, 3–7 mm, (base cuneate), margins entire. |
Racemes | (narrow), loose, (elongated in fruit). |
not loose, (scarcely elongated in fruit, 3–5-flowered). |
Flowers | sepals (greenish brown, sometimes magenta), linear or elliptic, 4.3–6(–7.5) mm, (median pair thickened apically, cucullate); petals (frequently pink or magenta in distal 1/3–1/2), spatulate to oblanceolate, 6–10(–12) mm, (claw undifferentiated 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). |
Fruiting pedicels | (ascending to somewhat spreading, straight to slightly curved), 4–8(–12) mm. |
(straight or slightly curved). |
Fruits | broadly ovoid to suborbicular, inflated, (terete or, often, slightly angustiseptate), 3–6mm; valves sparsely pubescent; ovules usually 4, rarely 6–8 per ovary; style 3–6.5 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. |
Seeds | plump. |
plump, (slightly compressed). |
Physaria multiceps |
Physaria humilis |
|
Phenology | Flowering May–Jul. | Flowering Jun-early Aug. |
Habitat | Douglas-fir or spruce woodlands, limestone ridges, damp open slopes, soil pockets among rocks, crevices of rocks, decomposed calcareous rocks | Steep slopes, dry summits, rocky fellfields, dry ledges |
Elevation | 2400-2900 m (7900-9500 ft) | 2700-2900 m (8900-9500 ft) |
Distribution |
ID; UT; WY |
MT |
Discussion | 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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Source | FNA vol. 7, p. 651. | FNA vol. 7, p. 644. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | Lesquerella multiceps | Lesquerella humilis |
Name authority | (Maguire) O’Kane & Al-Shehbaz: Novon 12: 325. (2002) | (Rollins) O’Kane & Al-Shehbaz: Novon 12: 324. (2002) |
Web links |