Physaria alpestris |
Physaria subumbellata |
|
---|---|---|
alpine twin-pod, Washington bladder-pod, Washington twin-pod |
parasol 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 simple or branched, (usually covered with persistent leaf bases, cespitose); densely pubescent, trichomes (closely appressed), rays distinct, usually bifurcate. |
Stems | several from base, decumbent to ascending, (unbranched), 0.5–1.5 dm. |
several from base, erect, (unbranched, slender), 0.1–0.6 dm. |
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 rhombic to obovate, 2–4 cm, margins entire. |
Cauline leaves | blade oblanceolate, 0.5–1.5 cm (width 3–5 mm), margins entire. |
blade linear-oblanceolate, similar to basal. |
Racemes | subcorymbose. |
dense (distally, subumbellate). |
Flowers | sepals oblong, 8–10 mm; petals spatulate, 12–14 mm. |
sepals (yellowish), oblong to elliptic, 3.5–7 mm, (median pair usually thickened apically, cucullate); petals lingulate to spatulate, 4–7 mm. |
Fruiting pedicels | (divaricate, straight), 5–10 mm. |
(divaricate-ascending), 3–5 mm, (densely pubescent). |
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. |
(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, (2–3 mm). |
plump. |
2n | = 48–52, 52, 64, 67–70. |
= 10. |
Physaria alpestris |
Physaria subumbellata |
|
Phenology | Flowering May–Jun. | Flowering Apr–Jun. |
Habitat | Alpine scree, rocky ridges, talus slopes, volcanic sands and gravel, serpentine gravel, granitic slopes, mountain shrub, subalpine fir, and whitebark pine communities | Rocky high ridges, gravel and stony areas, juniper covered knolls, rock crevices, clay hillsides, pinyon-juniper areas, calcareous substrates |
Elevation | (700-)1300-2400 m ((2300-)4300-7900 ft) | 1600-2700 m (5200-8900 ft) |
Distribution |
WA
|
CO; UT; WY
|
Source | FNA vol. 7, p. 624. | FNA vol. 7, p. 663. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | Lesquerella alpestris | Lesquerella subumbellata |
Name authority | Suksdorf: W. Amer. Sci. 15: 58. (1906) | (Rollins) O’Kane & Al-Shehbaz: Novon 12: 328. (2002) |
Web links |