Physaria alpestris |
Physaria klausii |
|
---|---|---|
alpine twin-pod, Washington bladder-pod, Washington twin-pod |
Rogers Pass or klaus' or divide 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; densely pubescent, trichomes (loosely spreading), 3–5-rayed, rays distinct, furcate (with exceptionally long branches). |
Stems | several from base, decumbent to ascending, (unbranched), 0.5–1.5 dm. |
simple from base, erect to decumbent, (slender), 0.6–1.5 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). |
blades obovate to deltate, 1.5–3(–4) cm, margins entire or outer one with 1 or 2 broad teeth. |
Cauline leaves | blade oblanceolate, 0.5–1.5 cm (width 3–5 mm), margins entire. |
blade oblanceolate to spatulate, 0.6–1.5 cm, margins entire. |
Racemes | subcorymbose. |
loose. |
Flowers | sepals oblong, 8–10 mm; petals spatulate, 12–14 mm. |
sepals (green-yellow, often tinged with purple), elliptic, 3–4.6 mm; petals oblanceolate, 6–8 mm (claw expanded). |
Fruiting pedicels | (divaricate, straight), 5–10 mm. |
(sigmoid), 5–9 mm. |
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. |
(depressed), broadly obovate, compressed (angustiseptate), 2–4 mm, (apex slightly bilobed to nearly truncate); valves densely pubescent, trichomes strongly ascending, spreading, long, (appearing fuzzy), pubescent inside; ovules 4 per ovary; style 3–4 mm, (pubescent or glabrous). |
Seeds | flattened, (2–3 mm). |
flattened. |
2n | = 48–52, 52, 64, 67–70. |
|
Physaria alpestris |
Physaria klausii |
|
Phenology | Flowering May–Jun. | Flowering Jul. |
Habitat | Alpine scree, rocky ridges, talus slopes, volcanic sands and gravel, serpentine gravel, granitic slopes, mountain shrub, subalpine fir, and whitebark pine communities | Open gravel slides, solifluction cross-stripes of shale rubble, barren shale-derived soil |
Elevation | (700-)1300-2400 m ((2300-)4300-7900 ft) | 1200-1900 m (3900-6200 ft) |
Distribution |
WA
|
MT |
Discussion | Of conservation concern. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 7, p. 624. | FNA vol. 7, p. 647. |
Parent taxa | Brassicaceae > tribe Physarieae > Physaria | Brassicaceae > tribe Physarieae > Physaria |
Sibling taxa | ||
Synonyms | Lesquerella alpestris | Lesquerella klausii |
Name authority | Suksdorf: W. Amer. Sci. 15: 58. (1906) | (Rollins) O’Kane & Al-Shehbaz: Novon 12: 325. (2002) |
Web links |