Physaria alpestris |
Physaria cinerea |
|
---|---|---|
alpine twin-pod, Washington bladder-pod, Washington twin-pod |
basin bladderpod |
|
Habit | Perennials; caudex usually simple, rarely branched, (cespitose); (silvery) pubescent throughout, trichomes several-rayed, rays (1- or) 2-bifurcate, (low-umbonate, tubercles relatively few, small). | Perennials; caudex branched, (woody); densely pubescent, trichomes (appressed, except spreading on pedicels and fruits, sessile or short-stalked), several-rayed, rays furcate or bifurcate, (strongly tuberculate throughout). |
Stems | several from base, decumbent to ascending, (unbranched), 0.5–1.5 dm. |
few from base, erect, (stout), to 1.5 dm (sometimes greatly reduced). |
Basal leaves | (petiole slender); blade obovate, 3–5 cm (width 10–20 mm, base tapering abruptly to petiole), margins entire, (apex rarely slightly acute). |
blade suborbicular to rhombic or broadly elliptic, 1–4.5 cm, margins entire, (apex rounded to subacute). |
Cauline leaves | blade oblanceolate, 0.5–1.5 cm (width 3–5 mm), margins entire. |
(proximal petiolate, distal subsessile); blade elliptic, 1–4 cm, (distal narrower), margins entire or remotely dentate. |
Racemes | subcorymbose. |
condensed, (subcorymbose to subumbellate, few-flowered). |
Flowers | sepals oblong, 8–10 mm; petals spatulate, 12–14 mm. |
sepals (persistent), broadly ovate or oblong to narrowly elliptic, 5.5–8(–9.5) mm, (lateral pair slightly cucullate, median pair thickened apically, cucullate, usually keeled); petals (orange to yellow), oblong to obovate, 8–11.5(–14.5) mm, (slightly narrowed to broad claw, margins sinuate, often retuse). |
Fruiting pedicels | (divaricate, straight), 5–10 mm. |
(horizontal or divaricate-ascending, straight or slightly curved), 5–15 mm, (stout and rigid). |
Fruits | didymous, mostly highly inflated (strongly flattened at least in 1/2 toward replum), 14–18 × 14–18 mm, (papery, basal sinus slightly notched, apical open, shallow); valves (retaining seeds after dehiscence), evenly pubescent; replum lanceolate, 7–10 mm, width 1.5–2.5 mm, as wide as or wider than fruit, apex acute to acuminate; ovules 8–10 per ovary; style 5–7 mm. |
(sessile or substipitate), globose, ovoid, or suborbicular, compressed (with marginal and apical constriction), 4–7 mm; valves pubescent, trichomes contiguous or overlapping, often spreading; ovules 16–24 per ovary; style 2–4 mm. |
Seeds | flattened, (2–3 mm). |
lenticular, ovate in outline. |
2n | = 48–52, 52, 64, 67–70. |
= 10. |
Physaria alpestris |
Physaria cinerea |
|
Phenology | Flowering May–Jun. | Flowering Mar–May. |
Habitat | Alpine scree, rocky ridges, talus slopes, volcanic sands and gravel, serpentine gravel, granitic slopes, mountain shrub, subalpine fir, and whitebark pine communities | Red soil, chiprock, gypsum or chalky knolls, limestone rubble |
Elevation | (700-)1300-2400 m ((2300-)4300-7900 ft) | 900-2200 m (3000-7200 ft) |
Distribution |
WA
|
AZ |
Source | FNA vol. 7, p. 624. | FNA vol. 7, p. 631. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | Lesquerella alpestris | Lesquerella cinerea |
Name authority | Suksdorf: W. Amer. Sci. 15: 58. (1906) | (S. Watson) O’Kane & Al-Shehbaz: Novon 12: 322. (2002) |
Web links |