Physaria congesta |
Physaria parviflora |
|
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Dudley bluffs bladderpod |
frosty bladderpod, Piceance bladderpod, Picenace bladderpod |
|
Habit | Perennials; (relatively diminutive, strongly condensed); caudex (buried), simple or branched, (stout, thatched, thickened with persistent leaf bases); densely pubescent, trichomes (appressed, stiff), 4- or 5-rayed, rays fused at center, (mostly bifurcate). | Perennials; caudex simple or branched; densely (silvery) pubescent, trichomes (irregularly radiate), 6–8-rayed, rays furcate or bifurcate, fused at base. |
Stems | simple or few from base, decumbent to ascending, (arising laterally from a tight hemispherical tuft of leaves), to 0.15 dm. |
several from base, prostrate to decumbent, (usually unbranched, rarely branched distally), 1–3 dm. |
Basal leaves | similar to cauline, (erect, surfaces silvery). |
(tufted); blade broadly obovate, 1–2 cm, margins entire or with 1 or 2 broad teeth, (apex rounded to obtuse). |
Cauline leaves | (ascending, subsessile); blade linear-oblanceolate, (0.6–)0.8–1.3(–1.5) cm, margins entire, (apex acute to narrowly obtuse). |
blade oblanceolate to nearly oblong, similar to basal, (base cuneate), margins entire. |
Racemes | strongly congested, (often sessile or nearly so, lateral to leaves). |
(secund), loose, (elongated in fruit). |
Flowers | sepals (loosely erect), narrowly oblong, 3–4 mm; petals spatulate, 5–6 mm. |
sepals (yellowish), elliptic to lanceolate, (2–)3–4 mm; petals spatulate, (3.9–)5–7 mm. |
Fruiting pedicels | (erect or ascending, straight to slightly curved), 3–6 mm. |
(recurved), 6–8(–12) mm. |
Fruits | ovate, compressed (latiseptate) on margins and apically, 4–5 mm; valves pubescent, trichomes densely appressed; ovules 4 per ovary; style 1–1.5 mm. |
(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. |
Seeds | plump. |
somewhat flattened. |
Physaria congesta |
Physaria parviflora |
|
Phenology | Flowering Apr–May. | Flowering Jun–Jul. |
Habitat | Barren knolls with pinyon-juniper | Shale of steep slopes, rock crevices, ledges, canyon sides, shale-marlstone |
Elevation | 1800-2100 m (5900-6900 ft) | 2100-2700 m (6900-8900 ft) |
Distribution |
CO |
CO
|
Discussion | Of conservation concern. Physaria congesta is found on white, decomposed shale of the Thirteenmile Creek Tongue of the Green River Formation. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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.) |
Source | FNA vol. 7, p. 632. | FNA vol. 7, p. 657. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | Lesquerella congesta | Lesquerella parviflora |
Name authority | (Rollins) O’Kane & Al-Shehbaz: Novon 12: 322. (2002) | (Rollins) O’Kane & Al-Shehbaz: Novon 12: 326. (2002) |
Web links |