Physaria pinetorum |
Physaria tenella |
|
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White Mountain bladderpod |
little bladderpod, Moapa bladderpod |
|
Habit | Perennials; caudex simple or branched; densely pubescent, trichomes (sessile or short-stalked), 6–8-rayed, rays furcate or bifurcate, (tuberculate, less so on outer layers). | Annuals or, rarely, biennials; with a taproot; densely pubescent, trichomes (simple or stellate, sessile or short-stalked), 4–7-rayed, rays usually furcate, rarely bifurcate, (nearly smooth to finely tuberculate). |
Stems | simple or few from base, ascending to erect, (0.5–)1–2(–3.5) dm. |
several from base, decumbent to erect, (several-branched, frequently stout), 1.5–6 dm. |
Basal leaves | (petiole tapering to blade); blade rhombic to elliptic and irregularly angular, sometimes spatulate to oblanceolate, 1.5–7.5(–10) cm, margins entire. |
blade elliptic, (1.5–)3–6.5 cm, margins entire, repand, or shallowly dentate. |
Cauline leaves | (not or loosely overlapping, petiolate or distal sessile); blade spatulate to oblanceolate, 1–4 cm, margins entire. |
(proximal shortly petiolate, distal sessile); blade linear to elliptic or obovate, (0.5–)1–3.5(–4.5) cm, margins entire or repand. |
Racemes | crowded, elongated. |
loose. |
Flowers | sepals ovate, oblong, or elliptic 4–7.5 mm, (median pair thickened apically, cucullate); petals spatulate or broadly cuneate, 6–13 mm, (claw slightly expanded at base). |
sepals oblong, lanceolate, or elliptic, (3–)3.5–6(–7.5) mm, (lateral pair subsaccate, median pair thickened apically, cucullate); petals (yellow to orange), suborbicular or obovate, (5–)6.5–8(–11) mm, (narrowing gradually to broad claw, usually widened at base). |
Fruiting pedicels | (ascending, curved or sigmoid), 6–12(–20) mm. |
(recurved, sigmoid), 5–15 mm. |
Fruits | (substipitate), globose or obovoid to ellipsoid, sometimes slightly obcompressed, 4–9 mm; valves (not retaining seeds after dehiscence), glabrous throughout; replum as wide as or wider than fruit; ovules 4–24 per ovary; style (2–)4–7 mm. |
(sessile or shortly stipitate), orbicular or obovoid, often slightly compressed, (3.5–)4–6 mm; valves sparsely pubescent, trichomes sessile and stellate, densely pubescent inside, trichomes simple or branched; ovules 4–12 per ovary; style 2–4.5 mm. |
Seeds | flattened. |
flattened. |
2n | = 10. |
= 10, 20. |
Physaria pinetorum |
Physaria tenella |
|
Phenology | Flowering Apr–Jul. | Flowering Feb–May. |
Habitat | Scrub oak, pinyon-juniper woodland, open ponderosa pine forests, these sometimes mixed with Douglas fir, white pine, white fir, Engelmann spruce, or Gambel oak, on limestone-derived or otherwise basic soils, often in rock crevices | Sandy soils, gravel, clayey loam, loose rocky slopes, washes, desert slopes and plains, lava hills, frequently in or near bushes |
Elevation | 1400-2900 (-3400) m (4600-9500 (-11200) ft) | (0-)600-1900 m ((0-)2000-6200 ft) |
Distribution |
AZ; NM
|
AZ; CA; NV; UT; Mexico (Sonora)
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Discussion | Physaria pinetorum with reduced forms are found at high elevations; in disturbed, moist soils plants can become quite large, as in the Manzano Mountains. Densely cespitose plants with crowded racemes not exceeding the basal leaves are found at the crest (3200–3400 m) of the Sandia Mountains, New Mexico. These probably represent an undescribed taxon. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 7, p. 658. | FNA vol. 7, p. 663. |
Parent taxa | Brassicaceae > tribe Physarieae > Physaria | Brassicaceae > tribe Physarieae > Physaria |
Sibling taxa | ||
Synonyms | Lesquerella pinetorum | Lesquerella tenella, Lesquerella gordonii var. sessilis |
Name authority | (Wooton & Standley) O’Kane & Al-Shehbaz: Novon 12: 327. (2002) | (A. Nelson) O’Kane & Al-Shehbaz: Novon 12: 328. (2002) |
Web links |