Physaria calcicola |
Physaria humilis |
|
---|---|---|
Rocky Mountain bladderpod |
St. Mary's Peak or bitterroot bladderpod |
|
Habit | Perennials; (compact); caudex branched; densely (silvery) pubescent, trichomes (sessile or short-stalked), 5–8-rayed, rays distinct, furcate or bifurcate, (umbonate, tuberculate and the center less so). | 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, erect or outer ones decumbent, (unbranched, stout, usually sparsely leaved), 1–3 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, 2–7(–10) cm, margins entire, repand, or shallowly dentate. |
blade elliptic to broadly ovate or obovate, (1–)1.5–2.5(–3) cm, margins entire, (apex obtuse). |
Cauline leaves | (sessile); blade (erect), spatulate to linear, (1–)2–3(–4.5) cm, margins entire, sometimes involute, (apex acute or subacute). |
blade spatulate, 3–7 mm, (base cuneate), margins entire. |
Racemes | dense, (exceeding basal leaves). |
not loose, (scarcely elongated in fruit, 3–5-flowered). |
Flowers | sepals ovate or oblong, (4.5–)5–6(–7) mm, (lateral pair subsaccate, cucullate, median pair thickened, cucullate apically); petals spatulate, 7–9(–11) mm (widened at base, slightly retuse). |
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 | (spreading, sharply sigmoid), 8–15 mm. |
(straight or slightly curved). |
Fruits | (sessile or substipitate), ovate to oblong, not compressed at distal margins or apex, 5–9 mm; valves sparsely pubescent, trichomes appressed; ovules 4–8 per ovary; style 3–5 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 | flattened. |
plump, (slightly compressed). |
2n | = 16, ca. 20. |
|
Physaria calcicola |
Physaria humilis |
|
Phenology | Flowering May–Jun. | Flowering Jun-early Aug. |
Habitat | Shale bluffs, limestone hillsides, gypseous knolls and ravines, calcareous substrates, grasslands and pinyon-juniper communities | Steep slopes, dry summits, rocky fellfields, dry ledges |
Elevation | 1400-2100 m (4600-6900 ft) | 2700-2900 m (8900-9500 ft) |
Distribution |
CO; NM
|
MT |
Discussion | Of conservation concern. (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. 629. | FNA vol. 7, p. 644. |
Parent taxa | Brassicaceae > tribe Physarieae > Physaria | Brassicaceae > tribe Physarieae > Physaria |
Sibling taxa | ||
Synonyms | Lesquerella calcicola | Lesquerella humilis |
Name authority | (Rollins) O’Kane & Al-Shehbaz: Novon 12: 322. (2002) | (Rollins) O’Kane & Al-Shehbaz: Novon 12: 324. (2002) |
Web links |