Physaria vitulifera |
Physaria tenella |
|
---|---|---|
roundtip twinpod |
little bladderpod, Moapa bladderpod |
|
Habit | Perennials; caudex simple or branched, (cespitose); (silvery) pubescent throughout, trichomes several-rayed, rays furcate or bifurcate, (relatively massive, smooth to few-tubercled). | 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 | several from base, usually decumbent to ascending, (arising laterally, unbranched, coarse), 1–2 dm. |
several from base, decumbent to erect, (several-branched, frequently stout), 1.5–6 dm. |
Basal leaves | blade pandurate or obovate, 3–6 cm, margins usually deeply and broadly incised, rarely subentire, (apex obtuse). |
blade elliptic, (1.5–)3–6.5 cm, margins entire, repand, or shallowly dentate. |
Cauline leaves | blade oblanceolate to spatulate, similar to basal, (3–6 mm wide), margins entire, (apex often somewhat acute). |
(proximal shortly petiolate, distal sessile); blade linear to elliptic or obovate, (0.5–)1–3.5(–4.5) cm, margins entire or repand. |
Racemes | congested, (elongated in fruit). |
loose. |
Flowers | sepals oblong, 6–8 mm; petals spatulate, to 10 mm. |
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 | (usually curving upward, sigmoid), 6–10 mm. |
(recurved, sigmoid), 5–15 mm. |
Fruits | didymous, irregular in shape, somewhat angular, inflated, 5–7 × 6–8 mm, (papery, often rigid, base obtuse or truncate, apical sinus broad, open and deep); valves (retaining seeds after dehiscence), pubescent, trichomes spreading, loose; replum oblong, often constricted, as wide as or wider than fruit, apex obtuse; ovules 4 per ovary; style 5–7 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 | = 8, 16. |
= 10, 20. |
Physaria vitulifera |
Physaria tenella |
|
Phenology | Flowering Apr–Jun. | Flowering Feb–May. |
Habitat | Rocky hillsides, dry banks, gravel and sand, granitic slopes, soil scree, red shale | Sandy soils, gravel, clayey loam, loose rocky slopes, washes, desert slopes and plains, lava hills, frequently in or near bushes |
Elevation | 1600-3000 m (5200-9800 ft) | (0-)600-1900 m ((0-)2000-6200 ft) |
Distribution |
CO
|
AZ; CA; NV; UT; Mexico (Sonora)
|
Source | FNA vol. 7, p. 665. | FNA vol. 7, p. 663. |
Parent taxa | Brassicaceae > tribe Physarieae > Physaria | Brassicaceae > tribe Physarieae > Physaria |
Sibling taxa | ||
Synonyms | Lesquerella tenella, Lesquerella gordonii var. sessilis | |
Name authority | Rydberg: Bull. Torrey Bot. Club 28: 278. (1901) | (A. Nelson) O’Kane & Al-Shehbaz: Novon 12: 328. (2002) |
Web links |