Physaria subumbellata |
Physaria pallida |
|
---|---|---|
parasol bladderpod |
white bladderpod |
|
Habit | Perennials; caudex simple or branched, (usually covered with persistent leaf bases, cespitose); densely pubescent, trichomes (closely appressed), rays distinct, usually bifurcate. | Annuals (winter); with a fine taproot; sparsely pubescent, trichomes (minute), 3- or 4-rayed, rays furcate or, sometimes, trifurcate. |
Stems | several from base, erect, (unbranched, slender), 0.1–0.6 dm. |
few to several from base, erect, (from basal leaf cluster, branched distally, flowering branches slender, subtended by bracts), 3–6 dm. |
Basal leaves | blade rhombic to obovate, 2–4 cm, margins entire. |
blade oblanceolate or broadly obovate, to 10 cm, margins usually sinuate-dentate or entire, sometimes lobed. |
Cauline leaves | blade linear-oblanceolate, similar to basal. |
(proximal shortly petiolate, distal sessile); blade oblanceolate to narrowly oblong, similar to basal, (distal with base slightly cuneate). |
Racemes | dense (distally, subumbellate). |
paniculate, (rachises and pedicels more densely pubescent than proximal leaves). |
Flowers | sepals (yellowish), oblong to elliptic, 3.5–7 mm, (median pair usually thickened apically, cucullate); petals lingulate to spatulate, 4–7 mm. |
sepals elliptic, 3–7 mm, (median pair slightly thickened apically, cucullate); petals (white), broadly ovate, to 12 mm, (narrowing gradually to short claw). |
Fruiting pedicels | (divaricate-ascending), 3–5 mm, (densely pubescent). |
(widely divaricate-ascending and straight, or slightly recurved), 10–15 mm, (slender, pubescent). |
Fruits | (erect), ovate to suborbicular, compressed apically (latiseptate), 3–4 mm; valves pubescent; replum ovate to obovate; ovules 4–6 per ovary; style 2–3 mm. |
(widely spreading to nearly pendent in age, shortly stipitate), globose or subglobose, not or slightly inflated, 3–10 mm; valves (not retaining seeds after dehiscence), glabrous; replum as wide as or wider than fruit; ovules 8–12 per ovary; style ca. 2 mm, (slender, fragile). |
Seeds | plump. |
flattened. |
2n | = 10. |
= 12. |
Physaria subumbellata |
Physaria pallida |
|
Phenology | Flowering Apr–Jun. | Flowering Apr–May. |
Habitat | Rocky high ridges, gravel and stony areas, juniper covered knolls, rock crevices, clay hillsides, pinyon-juniper areas, calcareous substrates | Grassy openings of small glade prairies, outcrops |
Elevation | 1600-2700 m (5200-8900 ft) | 90 m (300 ft) |
Distribution |
CO; UT; WY
|
TX |
Discussion | Of conservation concern. Physaria pallida is known from the Weches Formation in San Augustine County. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 7, p. 663. | FNA vol. 7, p. 656. |
Parent taxa | Brassicaceae > tribe Physarieae > Physaria | Brassicaceae > tribe Physarieae > Physaria |
Sibling taxa | ||
Synonyms | Lesquerella subumbellata | Vesicaria grandiflora var. pallida, Alyssum pallidum, Lesquerella pallida, Vesicaria pallida |
Name authority | (Rollins) O’Kane & Al-Shehbaz: Novon 12: 328. (2002) | (Torrey & A. Gray) O’Kane & Al-Shehbaz: Novon 12: 326. (2002) |
Web links |