Physaria intermedia |
Physaria subumbellata |
|
---|---|---|
mid-bladderpod |
parasol bladderpod |
|
Habit | Perennials; caudex (buried), branched, (thickened with persistent leaf bases, cespitose); densely pubescent (usually grayish-green), trichomes (sessile or short stalked, spreading), several-rayed, rays furcate or bifurcate, slightly fused at base, (tuberculate or finely tuberculate). | Perennials; caudex simple or branched, (usually covered with persistent leaf bases, cespitose); densely pubescent, trichomes (closely appressed), rays distinct, usually bifurcate. |
Stems | several from base, erect to decumbent, (unbranched, stout, densely leafy sterile shoots sometimes present), (0.5–)4–2.5 dm. |
several from base, erect, (unbranched, slender), 0.1–0.6 dm. |
Basal leaves | (clustered at stem base); blade linear to linear-oblanceolate, 2–5 cm, margins entire, usually involute, sometimes flattened, (apex obtuse to subacute). |
blade rhombic to obovate, 2–4 cm, margins entire. |
Cauline leaves | blade linear-oblanceolate to linear, 1–3.5(–4.5) cm, margins entire, usually involute. |
blade linear-oblanceolate, similar to basal. |
Racemes | compact, (often nearly subumbellate). |
dense (distally, subumbellate). |
Flowers | sepals (yellowish or greenish yellow), ovate or oblong, 4.5–7.5(–9) mm, (lateral pair sometimes cucullate, median pair tapering at both ends, thickened apically, cucullate); petals spatulate or oblong, 6.5–10.5(–15) mm, (base sometimes widened, apex rounded or retuse). |
sepals (yellowish), oblong to elliptic, 3.5–7 mm, (median pair usually thickened apically, cucullate); petals lingulate to spatulate, 4–7 mm. |
Fruiting pedicels | (often expanded distally, ascending or recurved, usually straight or slightly curved, rarely nearly sigmoid), 4–15 mm, (stout). |
(divaricate-ascending), 3–5 mm, (densely pubescent). |
Fruits | (sessile or substipitate), subglobose to slightly ovoid, usually inflated, rarely compressed or obcompressed, 4–6(–10) mm, (apex acute, slightly flattened); valves sparsely pubescent, trichomes appressed; ovules (8–)12–16(–20) per ovary; style (2–)3–4.5(–5.5) mm. |
(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. |
Seeds | flattened. |
plump. |
2n | = 18, 20, 36. |
= 10. |
Physaria intermedia |
Physaria subumbellata |
|
Phenology | Flowering Apr–Aug. | Flowering Apr–Jun. |
Habitat | Dry sandy, gravelly, or rocky soil, claylike hillsides, open chiprock, dry stream beds, gravel bars, open knolls, open pinyon-juniper woods, open stands of sagebrush, Gambel oak or ponderosa pine communities, calcareous substrates | Rocky high ridges, gravel and stony areas, juniper covered knolls, rock crevices, clay hillsides, pinyon-juniper areas, calcareous substrates |
Elevation | 1600-2400 m (5200-7900 ft) | 1600-2700 m (5200-8900 ft) |
Distribution |
AZ; NM; UT
|
CO; UT; WY
|
Discussion | N. H. Holmgren (2005b) pointed out that the lectotype and other material from New Mexico, where Physaria intermedia is very infrequent, is quite similar to P. parvula from northern Colorado and northeastern Utah; it is also quite similar to, but less robust than, P. pulvinata from southwestern Colorado. The material from Arizona, northwestern New Mexico, and Utah may represent an unnamed taxon; further study is needed. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 7, p. 644. | FNA vol. 7, p. 663. |
Parent taxa | Brassicaceae > tribe Physarieae > Physaria | Brassicaceae > tribe Physarieae > Physaria |
Sibling taxa | ||
Synonyms | Lesquerella alpina var. intermedia, Lesquerella intermedia | Lesquerella subumbellata |
Name authority | (S. Watson) O’Kane & Al-Shehbaz: Novon 12: 324. (2002) | (Rollins) O’Kane & Al-Shehbaz: Novon 12: 328. (2002) |
Web links |