Physaria parviflora |
Physaria pruinosa |
|
---|---|---|
frosty bladderpod, Piceance bladderpod, Picenace bladderpod |
frosty bladderpod, Pagosa bladderpod |
|
Habit | Perennials; caudex simple or branched; densely (silvery) pubescent, trichomes (irregularly radiate), 6–8-rayed, rays furcate or bifurcate, fused at base. | Perennials; caudex simple or branched, (covered with persistent leaf bases); densely pubescent, trichomes (sessile or subsessile), 4–7-rayed, rays furcate or bifurcate, (tuberculate throughout). |
Stems | several from base, prostrate to decumbent, (usually unbranched, rarely branched distally), 1–3 dm. |
simple or several from base, decumbent or erect, (unbranched), to 2 dm. |
Basal leaves | (tufted); blade broadly obovate, 1–2 cm, margins entire or with 1 or 2 broad teeth, (apex rounded to obtuse). |
(petiole sharply differentiated from blade, slender); blade suborbicular or obovate to rhombic, 4–8 cm, (base abruptly narrowed to petiole), margins entire, sinuate, or shallowly dentate, (abaxial surface densely pubescent, adaxial lightly pubescent). |
Cauline leaves | blade oblanceolate to nearly oblong, similar to basal, (base cuneate), margins entire. |
(proximal petiolate, distal sessile); blade obovate to rhombic, 0.8–2.3 cm, margins entire or shallowly toothed. |
Racemes | (secund), loose, (elongated in fruit). |
dense, (somewhat elongated in fruit). |
Flowers | sepals (yellowish), elliptic to lanceolate, (2–)3–4 mm; petals spatulate, (3.9–)5–7 mm. |
sepals elliptic or oblong, ca. 6 mm, (lateral pair not saccate or subsaccate, cucullate, median pair thickened apically, cucullate); petals spatulate, ca. 9 mm, (claw expanded at base). |
Fruiting pedicels | (recurved), 6–8(–12) mm. |
(horizontal to ascending, sigmoid or slightly curved), 8–11 mm, (stout). |
Fruits | (usually pendent), elliptic to subglobose, usually slightly compressed (latiseptate), 3–4 mm; valves densely pubescent, sometimes with scattered trichomes inside; ovules 4 per ovary; style ca. 3 mm. |
(sessile or substipitate, often becoming copper-red in age), subglobose or ellipsoid, inflated, 6–9 mm, (firm, glossy); valves (not retaining seeds after dehiscence), glabrous throughout; replum as wide as or wider than fruit; ovules 4–8(–12) per ovary; style 3.5–7 mm. |
Seeds | somewhat flattened. |
somewhat flattened. |
Physaria parviflora |
Physaria pruinosa |
|
Phenology | Flowering Jun–Jul. | Flowering May–Jun(-Aug). |
Habitat | Shale of steep slopes, rock crevices, ledges, canyon sides, shale-marlstone | Mancos slate or shale, meadows, gentle slopes, edges of ponderosa pine stands |
Elevation | 2100-2700 m (6900-8900 ft) | 2100-2600 m (6900-8500 ft) |
Distribution |
CO
|
CO; NM |
Discussion | Of conservation concern. Physaria parviflora is known from the Parachute Creek Member of the Green River Formation, Rio Blanco County. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Of conservation concern. The one New Mexico population is near the border with Colorado, in Rio Arriba County. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 7, p. 657. | FNA vol. 7, p. 658. |
Parent taxa | Brassicaceae > tribe Physarieae > Physaria | Brassicaceae > tribe Physarieae > Physaria |
Sibling taxa | ||
Synonyms | Lesquerella parviflora | Lesquerella pruinosa |
Name authority | (Rollins) O’Kane & Al-Shehbaz: Novon 12: 326. (2002) | (Greene) O’Kane & Al-Shehbaz: Novon 12: 327. (2002) |
Web links |