Physaria klausii |
Physaria vitulifera |
|
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Rogers Pass or klaus' or divide bladderpod |
roundtip twinpod |
|
Habit | Perennials; caudex simple; densely pubescent, trichomes (loosely spreading), 3–5-rayed, rays distinct, furcate (with exceptionally long branches). | Perennials; caudex simple or branched, (cespitose); (silvery) pubescent throughout, trichomes several-rayed, rays furcate or bifurcate, (relatively massive, smooth to few-tubercled). |
Stems | simple from base, erect to decumbent, (slender), 0.6–1.5 dm. |
several from base, usually decumbent to ascending, (arising laterally, unbranched, coarse), 1–2 dm. |
Basal leaves | blades obovate to deltate, 1.5–3(–4) cm, margins entire or outer one with 1 or 2 broad teeth. |
blade pandurate or obovate, 3–6 cm, margins usually deeply and broadly incised, rarely subentire, (apex obtuse). |
Cauline leaves | blade oblanceolate to spatulate, 0.6–1.5 cm, margins entire. |
blade oblanceolate to spatulate, similar to basal, (3–6 mm wide), margins entire, (apex often somewhat acute). |
Racemes | loose. |
congested, (elongated in fruit). |
Flowers | sepals (green-yellow, often tinged with purple), elliptic, 3–4.6 mm; petals oblanceolate, 6–8 mm (claw expanded). |
sepals oblong, 6–8 mm; petals spatulate, to 10 mm. |
Fruiting pedicels | (sigmoid), 5–9 mm. |
(usually curving upward, sigmoid), 6–10 mm. |
Fruits | (depressed), broadly obovate, compressed (angustiseptate), 2–4 mm, (apex slightly bilobed to nearly truncate); valves densely pubescent, trichomes strongly ascending, spreading, long, (appearing fuzzy), pubescent inside; ovules 4 per ovary; style 3–4 mm, (pubescent or glabrous). |
didymous, irregular in shape, somewhat angular, inflated, 5–7 × 6–8 mm, (papery, often rigid, base obtuse or truncate, apical sinus broad, open and deep); valves (retaining seeds after dehiscence), pubescent, trichomes spreading, loose; replum oblong, often constricted, as wide as or wider than fruit, apex obtuse; ovules 4 per ovary; style 5–7 mm. |
Seeds | flattened. |
flattened. |
2n | = 8, 16. |
|
Physaria klausii |
Physaria vitulifera |
|
Phenology | Flowering Jul. | Flowering Apr–Jun. |
Habitat | Open gravel slides, solifluction cross-stripes of shale rubble, barren shale-derived soil | Rocky hillsides, dry banks, gravel and sand, granitic slopes, soil scree, red shale |
Elevation | 1200-1900 m (3900-6200 ft) | 1600-3000 m (5200-9800 ft) |
Distribution |
MT |
CO
|
Discussion | Of conservation concern. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 7, p. 647. | FNA vol. 7, p. 665. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | Lesquerella klausii | |
Name authority | (Rollins) O’Kane & Al-Shehbaz: Novon 12: 325. (2002) | Rydberg: Bull. Torrey Bot. Club 28: 278. (1901) |
Web links |