Physaria pycnantha |
Physaria humilis |
|
---|---|---|
mountain-view bladderpod |
St. Mary's Peak or bitterroot bladderpod |
|
Habit | Perennials; caudex branched, (densely cespitose and forming hemispheric mounds); densely pubescent, trichomes 5-rayed, rays bifurcate near base, fused at base, (strongly tuberculate throughout). | 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, erect, (usually exceeding basal leaves), 0.3–0.7 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 linear-spatulate, 1.5–4 cm, (base narrowed gradually to petiole), margins entire. |
blade elliptic to broadly ovate or obovate, (1–)1.5–2.5(–3) cm, margins entire, (apex obtuse). |
Cauline leaves | blade spatulate, similar to basal. |
blade spatulate, 3–7 mm, (base cuneate), margins entire. |
Racemes | crowded in distal 1/3, (4–10-flowered). |
not loose, (scarcely elongated in fruit, 3–5-flowered). |
Flowers | sepals (pale yellow), oblong to elliptic, 3–4 mm, (median pair usually thickened apically, cucullate); petals (sometimes with slight tinge of orange basally), lingulate, 4–6 mm. |
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 | (loosely to strongly sigmoid), 6–10 mm. |
(straight or slightly curved). |
Fruits | ellipsoid, slightly inflated (somewhat latiseptate), 4–5 mm, (apex acute); valves pubescent, trichomes erect, appearing slightly shaggy; ovules 4–8 per ovary; styles 2.5–3 mm, (shorter than mature fruits). |
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 | ± flattened, convex on outer side. |
plump, (slightly compressed). |
Physaria pycnantha |
Physaria humilis |
|
Phenology | Flowering late May–Jun(-Jul). | Flowering Jun-early Aug. |
Habitat | Dry, windswept knolls of limestone gravel, with other cushion-forming plants | Steep slopes, dry summits, rocky fellfields, dry ledges |
Elevation | 1600-2300 m (5200-7500 ft) | 2700-2900 m (8900-9500 ft) |
Distribution |
ID; MT
|
MT |
Discussion | Physaria pycnantha is morphologically similar to 56. P. nelsonii. (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.) |
Source | FNA vol. 7, p. 659. | FNA vol. 7, p. 644. |
Parent taxa | Brassicaceae > tribe Physarieae > Physaria | Brassicaceae > tribe Physarieae > Physaria |
Sibling taxa | ||
Synonyms | Lesquerella humilis | |
Name authority | Grady & O’Kane: Novon 17: 188, fig. 5. (2007) | (Rollins) O’Kane & Al-Shehbaz: Novon 12: 324. (2002) |
Web links |