Physaria rollinsii |
Physaria curvipes |
|
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Rollins' twinpod |
curved bladderpod |
|
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; densely pubescent, trichomes (often wavy, closely appressed to blade surfaces), 4–5-rayed, rays furcate or bifurcate, slightly fused near base, (tuberculate throughout). |
Stems | several from base, decumbent, (unbranched, slender), 0.5–1 dm. |
simple from base, loosely spreading, usually decumbent, (well exserted from basal leaves, often reddish purple), 0.8–2.4 dm. |
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 (erect), spatulate to nearly rhombic, 2.5–5(–9) cm, (base gradually narrowed to petiole), margins entire, (flat). |
Cauline leaves | blade oblanceolate, 1–1.5 cm (width 2–4 mm), margins entire, (apex acute). |
blade spatulate, similar to basal, margins entire. |
Racemes | congested, (elongated moderately in fruit). |
loose, (elongated, exceeding basal leaves). |
Flowers | sepals linear, 5–7 mm; petals spatulate, 8–10 mm, (apex often somewhat truncate). |
sepals (pale yellow), lingulate to spatulate, 3.5–4 mm; petals narrowly oblanceolate, 4–6 mm. |
Fruiting pedicels | (spreading, straight or somewhat sigmoid), 5–8 mm. |
(ascending, curved or sigmoid), 4–7 mm. |
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. |
ellipsoid, not inflated (strongly latiseptate, more so at apex), (3–)5–9 mm; valves pubescent, trichomes closely appressed to surface; ovules 4–8 per ovary; style 2.5–4.5 mm (never more than 1/2 fruit length). |
Seeds | slightly flattened. |
plump. |
2n | = 8. |
|
Physaria rollinsii |
Physaria curvipes |
|
Phenology | Flowering May–Jun. | Flowering Jun–Jul. |
Habitat | Sagebrush, granitic talus, open knolls, limestone chiprock, steep slopes, clay banks, near granite boulders | Limestone outcrops |
Elevation | 2300-2500(-3900) m (7500-8200(-12800) ft) | 1600-2800 m (5200-9200 ft) |
Distribution |
CO
|
MT; WY |
Discussion | Physaria curvipes is known from the Big Horn Mountains. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 7, p. 661. | FNA vol. 7, p. 632. |
Parent taxa | Brassicaceae > tribe Physarieae > Physaria | Brassicaceae > tribe Physarieae > Physaria |
Sibling taxa | ||
Synonyms | Lesquerella curvipes | |
Name authority | G. A. Mulligan: Canad. J. Bot. 44: 1663, fig. 2, plate 1, fig. 4. (1966) | (A. Nelson) Grady & O’Kane: Novon 17: 183. (2007) |
Web links |