Physaria purpurea |
Physaria alpina |
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rose bladderpod |
Avery Peak or alpine twinpod, Avery Peak twinpod |
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Habit | Perennials; caudex simple, (usually woody); densely pubescent, trichomes (sessile or short-stalked), several-rayed, rays simple or furcate, (smooth or tuberculate). | 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). |
Stems | simple from base, erect, (unbranched, sparsely leaved), to 7 dm. |
few from base, decumbent, (arising laterally proximal to current season’s leaves), 0.3–0.8 dm. |
Basal leaves | blade elliptic or obovate to oblong, 4–15 cm, margins entire, dentate, or lyrate-pinnatifid. |
(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). |
Cauline leaves | (proximal often narrowed to short petiole, distal sessile); blade broadly elliptic to obovate or rhombic, 0.5–3(–5) cm, margins entire. |
(2–5 per stem); blade oblanceolate to spatulate, similar to basal, margins entire, (apex acute). |
Racemes | dense or slightly elongated. |
loose, (3–6-flowered). |
Flowers | sepals elliptic to ovate, 3.5–6(–7) mm, (median pair usually thickened apically, cucullate); petals (white, often purple-veined, fading purplish), suborbicular to obovate, obdeltate, or cuneate, 4.5–10(–12) mm, (often narrowed to broad claw, apex emarginate, less frequently claw undifferentiated from blade). |
sepals narrowly oblong to linear, 7–9 mm; petals (erect), spatulate, 10–12(–15) mm. |
Fruiting pedicels | (spreading or recurved, loosely sigmoid), 5–25 mm. |
(widely spreading to ascending, slightly curved or straight), 7–11 mm. |
Fruits | (pendent or horizontal, sessile or substipitate), subglobose to broadly ellipsoid, not or slightly inflated, (4–)5–8 mm; valves (not retaining seeds after dehiscence), glabrous throughout; replum as wide as or wider than fruit; ovules 4–8(–12) per ovary; style 1–3(–4) mm. |
(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). |
Seeds | flattened. |
flattened. |
2n | = 18, 36. |
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Physaria purpurea |
Physaria alpina |
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Phenology | Flowering Mar–Oct. | Flowering Jun–Jul. |
Habitat | Rocky draws, canyons, stony hills, ridges, rock crevices on limestone ledges, lava cliffs, sand and gravel of dry stream beds, rocky slopes, talus, shade of bushes or cactus clumps | Whitish or red substrates from limestone or dolomite, ridge crests, rocky alpine tundra and open areas |
Elevation | 400-2400 m (1300-7900 ft) | 3500-4000 m (11500-13100 ft) |
Distribution |
AZ; NM; TX; Mexico (Chihuahua, Coahuila, Sonora)
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CO
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Discussion | Of conservation concern. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 7, p. 659. | FNA vol. 7, p. 624. |
Parent taxa | Brassicaceae > tribe Physarieae > Physaria | Brassicaceae > tribe Physarieae > Physaria |
Sibling taxa | ||
Synonyms | Vesicaria purpurea, Lesquerella purpurea, Lesquerella purpurea subsp. foliosa, Lesquerella purpurea var. foliosa, P. purpurea var. foliosa | |
Name authority | (A. Gray) O’Kane & Al-Shehbaz: Novon 12: 327. (2002) | Rollins: Brittonia 33: 339. (1981) |
Web links |