Physaria alpestris |
Physaria lindheimeri |
|
---|---|---|
alpine twin-pod, Washington bladder-pod, Washington twin-pod |
Lindheimer's 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). | Annuals or biennials; with a fine taproot; densely pubescent, trichomes (sessile or short-stalked), 4–7-rayed, rays usually furcate at base, sometimes bifurcate, (rough-tuberculate throughout). |
Stems | several from base, decumbent to ascending, (unbranched), 0.5–1.5 dm. |
several from base, erect or outer decumbent, (often several-branched, branches slender and flexuous), to 8 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 pinnatisect to repand, 3–9(–14) cm, margins entire. |
Cauline leaves | blade oblanceolate, 0.5–1.5 cm (width 3–5 mm), margins entire. |
(sometimes secund, proximal usually petiolate, distal sessile); blade elliptic, 1–6 cm, (distal with cuneate base), margins entire or deeply dentate. |
Racemes | subcorymbose. |
dense. |
Flowers | sepals oblong, 8–10 mm; petals spatulate, 12–14 mm. |
sepals elliptic to oblong, 3–5.5 mm, (median pair slightly thickened apically, cucullate); petals (sometimes drying slightly purplish), suborbicular or broadly ovate, 4.5–7(–9) mm, (narrowing gradually to short claw). |
Fruiting pedicels | (divaricate, straight), 5–10 mm. |
(horizontal or recurved and ascending at tip, sometimes loosely sigmoid), (5–)10–20 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. |
globose or broadly ellipsoid, not or slightly inflated, (4–)5–8 mm, (smooth); valves (not retaining seeds after dehiscence), glabrous; replum as wide as or wider than fruit; ovules (8–)12–16(–20) per ovary; style (1.5–)2–3(–4) mm. |
Seeds | flattened, (2–3 mm). |
flattened. |
2n | = 48–52, 52, 64, 67–70. |
= 12. |
Physaria alpestris |
Physaria lindheimeri |
|
Phenology | Flowering May–Jun. | Flowering Dec–Apr. |
Habitat | Alpine scree, rocky ridges, talus slopes, volcanic sands and gravel, serpentine gravel, granitic slopes, mountain shrub, subalpine fir, and whitebark pine communities | Heavy, black, claylike soils, or lighter, sandy soils, thickets, field-margins, roadsides, coastal prairies |
Elevation | (700-)1300-2400 m ((2300-)4300-7900 ft) | 20-800 m (100-2600 ft) |
Distribution |
WA
|
TX; Mexico (Tamaulipas) |
Source | FNA vol. 7, p. 624. | FNA vol. 7, p. 649. |
Parent taxa | Brassicaceae > tribe Physarieae > Physaria | Brassicaceae > tribe Physarieae > Physaria |
Sibling taxa | ||
Synonyms | Lesquerella alpestris | Vesicaria lindheimeri, Alyssum lindheimeri, Lesquerella gracilis var. pilosa, Lesquerella lindheimeri |
Name authority | Suksdorf: W. Amer. Sci. 15: 58. (1906) | (A. Gray) O’Kane & Al-Shehbaz: Novon 12: 325. (2002) |
Web links |