Physaria alpina |
Physaria angustifolia |
|
---|---|---|
Avery Peak or alpine twinpod, Avery Peak twinpod |
threadleaf bladderpod |
|
Habit | Perennials; (with a long taproot), caudex usually buried, simple, (enlarged, covered with marcescent leaf bases, crown rosulate and horizontal to somewhat ascending, forming a dense crown at apex of caudex); (silvery) pubescent throughout, trichomes (sessile or stipitate), 5–8-rayed, rays furcate or bifurcate, (rounded to umbonate, strongly tuberculate, less so or smooth over center). | Annuals; with a fine taproot; ± densely pubescent, trichomes several-rayed, rays distinct or fused at base, bifurcate, (prominently tuberculate throughout). |
Stems | few from base, decumbent, (arising laterally proximal to current season’s leaves), 0.3–0.8 dm. |
simple or few to several from base, erect, (sometimes branched), to 4 dm. |
Basal leaves | (petiole slender); blade broadly obovate, or deltate to ovate or narrower, 1.5–3.5 cm, (base abruptly to gradually narrowed to petiole), margins entire or obscurely few-toothed, (apex usually obtuse, nearly acute in narrower leaves). |
blade elliptic to rhombic, 3–8 cm, (base narrowing gradually to petiole), margins entire, repand, coarsely toothed, or pinnatifid. |
Cauline leaves | (2–5 per stem); blade oblanceolate to spatulate, similar to basal, margins entire, (apex acute). |
(proximal often shortly petiolate, distal sessile); blade linear or narrowly obovate, 1.5–6(–10) cm, margins entire, repand, or shallowly toothed. |
Racemes | loose, (3–6-flowered). |
usually loose. |
Flowers | sepals narrowly oblong to linear, 7–9 mm; petals (erect), spatulate, 10–12(–15) mm. |
sepals elliptic or ovate, 4–6 mm, (lateral pair usually subsaccate); petals obovate to obdeltate, 6–10 mm, (apex often emarginate). |
Fruiting pedicels | (widely spreading to ascending, slightly curved or straight), 7–11 mm. |
(usually divaricate, sometimes horizontal, straight or slightly curved), 8–20 mm. |
Fruits | (usually purplish in age), didymous, irregular and somewhat angular, not highly inflated, 4–11 × 10–13 mm, (coriaceous, papery, shallowly grooved distally and on sides, tapered and narrowed toward replum, base obtuse to truncate, apex with broad sinus to nearly truncate); valves (retaining seeds after dehiscence), densely pubescent, not silvery; replum elliptic to obovate, as wide as or wider than fruit, base rounded, margins sparsely pubescent or glabrous, apex rounded (with funicles); ovules 4 per ovary; style 5–7 mm, (glabrous). |
not didymous, ± globose, slightly inflated, 4–6 mm; valves (not retaining seeds after dehiscence), glabrous throughout; replum as wide as or wider than fruit; ovules 4 per ovary; style 2–3.5 mm; (stigma expanded). |
Seeds | flattened. |
flattened, (margined). |
2n | = 10. |
|
Physaria alpina |
Physaria angustifolia |
|
Phenology | Flowering Jun–Jul. | Flowering Apr(-May). |
Habitat | Whitish or red substrates from limestone or dolomite, ridge crests, rocky alpine tundra and open areas | Shallow limestone-derived soils, sometimes spreading to disturbed sites |
Elevation | 3500-4000 m (11500-13100 ft) | 90-300 m (300-1000 ft) |
Distribution |
CO
|
OK; TX |
Discussion | Of conservation concern. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 7, p. 624. | FNA vol. 7, p. 625. |
Parent taxa | Brassicaceae > tribe Physarieae > Physaria | Brassicaceae > tribe Physarieae > Physaria |
Sibling taxa | ||
Synonyms | Vesicaria angustifolia, Lesquerella angustifolia, Lesquerella longifolia | |
Name authority | Rollins: Brittonia 33: 339. (1981) | (Nuttall ex Torrey & A. Gray) O’Kane & Al-Shehbaz: Novon 12: 321. (2002) |
Web links |