Physaria alpina |
Physaria ovalifolia |
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Avery Peak or alpine twinpod, Avery Peak twinpod |
roundleaf bladderpod |
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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). | Perennials; caudex simple or branched, (thickened by persistent leaf bases); densely pubescent (foliage usually scabrous), trichomes (sessile or short-stalked), several-rayed, rays furcate near base, (usually strongly umbonate, roughly tuberculate, less so over umbo). | ||||
Stems | few from base, decumbent, (arising laterally proximal to current season’s leaves), 0.3–0.8 dm. |
few to several from base, erect or outer decumbent, 0.5–2.5 dm. |
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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 suborbicular to elliptic or ovate or deltate, 0.5–2(–6.5) cm, margins entire or shallowly dentate. |
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Cauline leaves | (2–5 per stem); blade oblanceolate to spatulate, similar to basal, margins entire, (apex acute). |
(proximal shortly petiolate, distal usually sessile); blade narrowly elliptic or obovate, (0.5–)1–2.5(–4) cm, margins entire. |
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Racemes | loose, (3–6-flowered). |
compact, (± subumbellate to densely corymbiform, elongated or not). |
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Flowers | sepals narrowly oblong to linear, 7–9 mm; petals (erect), spatulate, 10–12(–15) mm. |
sepals ± elliptic, 4.5–7(–8.5) mm, (median pair thickened apically); petals (sometimes white), suborbicular to obovate or obdeltate, 6.5–15 mm, (base narrowing to broad claw, apex sometimes emarginated). |
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Fruiting pedicels | (widely spreading to ascending, slightly curved or straight), 7–11 mm. |
(usually spreading at right angles, sometimes nearly erect, ± straight), 5–15(–20) mm, (stout). |
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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). |
(sessile or shortly stipitate, less than 1 mm), subglobose to broadly ellipsoid, inflated or slightly compressed (terete or subterete), (4–)5–8(–9) mm; valves (not retaining seeds after dehiscence), glabrous; replum as wide as or wider than fruit; ovules 8–16 per ovary; style 4–8(–9) mm. |
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Seeds | flattened. |
flattened. |
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Physaria alpina |
Physaria ovalifolia |
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Phenology | Flowering Jun–Jul. | |||||
Habitat | Whitish or red substrates from limestone or dolomite, ridge crests, rocky alpine tundra and open areas | |||||
Elevation | 3500-4000 m (11500-13100 ft) | |||||
Distribution |
CO
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CO; KS; NE; NM; OK; TX
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Discussion | Of conservation concern. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Subspecies 2 (2 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 7, p. 624. | FNA vol. 7, p. 655. | ||||
Parent taxa | Brassicaceae > tribe Physarieae > Physaria | Brassicaceae > tribe Physarieae > Physaria | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | Lesquerella ovalifolia, Lesquerella engelmannii subsp. ovalifolia | |||||
Name authority | Rollins: Brittonia 33: 339. (1981) | (Rydberg) O’Kane & Al-Shehbaz: Novon 12: 326. (2002) | ||||
Web links |