Physaria rollinsii |
Physaria hemiphysaria |
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Rollins' twinpod |
intermountain bladderpod, skyline bladderpod |
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Habit | Perennials; (compact); caudex usually simple, (cespitose); (silvery) pubescent throughout, trichomes 6–8-rayed, rays furcate near base, fused at base, (umbonate, strongly tuberculate throughout). | Perennials; caudex simple or branched (tightly); sparsely to densely pubescent, trichomes (sessile or short-stalked), 4–6-rayed, rays furcate or bifurcate, distinct or slightly fused at base, (sometimes umbonate, tuberculate throughout). | ||||
Stems | several from base, decumbent, (unbranched, slender), 0.5–1 dm. |
few to several from base, decumbent, 0.5–1(–2) dm, (rather stout, sparsely pubescent). |
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Basal leaves | (strongly rosulate); blade usually oblanceolate or broader, sometimes triangular, 2–3.5 cm (width 5–10 mm), margins entire or with 1 or 2 broad teeth, (apex acute). |
blade elliptic to suborbicular, 1.5–3.5(–5.5) cm, margins entire or shallowly dentate (at base, surfaces densely pubescent, silvery). |
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Cauline leaves | blade oblanceolate, 1–1.5 cm (width 2–4 mm), margins entire, (apex acute). |
(petiolate or distal nearly sessile); blade elliptic to obovate, 0.5–1.5 cm, margins entire. |
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Racemes | congested, (elongated moderately in fruit). |
dense, congested, (few-flowered). |
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Flowers | sepals linear, 5–7 mm; petals spatulate, 8–10 mm, (apex often somewhat truncate). |
sepals lanceolate, oblanceolate, or narrowly elliptic, 3.8–5 mm, (median pair thickened apically, cucullate); petals narrowly lanceolate to linear, 6–10(–13) mm. |
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Fruiting pedicels | (spreading, straight or somewhat sigmoid), 5–8 mm. |
(spreading or recurved, sometimes loosely sigmoid), 2–6.5 mm. |
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Fruits | (erect), didymous, suborbicular, inflated, 2–5(–8) × 4–8(–10)mm, (coriaceous, base slightly cordate or nearly obtuse, sinus obsolete or absent, apical sinus broad and deep); valves (retaining seeds after dehiscence), pubescent, trichomes appressed, (silvery on ovaries and immature fruit); replum obovate to oblong, as wide as or wider than fruit, rarely somewhat constricted basally, apex obtuse; ovules 4 per ovary; style 5–7 mm. |
(sessile or substipitate), broadly obcordate, obdeltate, or obcompressed, slightly compressed (angustiseptate), 3–5(–7) mm; valves (not retaining seeds after dehiscence), sparsely pubescent or glabrous, trichomes appressed; replum as wide as or wider than fruit; ovules 8–16 per ovary; style (1.8–)3–6(–7) mm. |
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Seeds | slightly flattened. |
slightly flattened, (ellipsoid to suborbicular). |
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2n | = 8. |
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Physaria rollinsii |
Physaria hemiphysaria |
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Phenology | Flowering May–Jun. | |||||
Habitat | Sagebrush, granitic talus, open knolls, limestone chiprock, steep slopes, clay banks, near granite boulders | |||||
Elevation | 2300-2500(-3900) m (7500-8200(-12800) ft) | |||||
Distribution |
CO
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UT |
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Discussion | 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. 661. | FNA vol. 7, p. 642. | ||||
Parent taxa | Brassicaceae > tribe Physarieae > Physaria | Brassicaceae > tribe Physarieae > Physaria | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | Lesquerella hemiphysaria | |||||
Name authority | G. A. Mulligan: Canad. J. Bot. 44: 1663, fig. 2, plate 1, fig. 4. (1966) | (Maguire) O’Kane & Al-Shehbaz: Novon 12: 323. (2002) | ||||
Web links |