Physaria calcicola |
Physaria lepidota |
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Rocky Mountain bladderpod |
Kane County twinpod |
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Habit | Perennials; (compact); caudex branched; densely (silvery) pubescent, trichomes (sessile or short-stalked), 5–8-rayed, rays distinct, furcate or bifurcate, (umbonate, tuberculate and the center less so). | Perennials; caudex simple, (with deep roots, thickened); densely (silvery) pubescent throughout (densely covering leaves with several appressed layers), less dense on stems, trichomes (stellate-scalelike), rays fused (webbed) in proximal 1/2 or to tips, (umbonate, nearly smooth to moderately tuberculate). | ||||
Stems | several from base, erect or outer ones decumbent, (unbranched, stout, usually sparsely leaved), 1–3 dm. |
simple from base, erect or outer ones slightly decumbent toward base, (from below or in basal leaves, unbranched), (0.5–)0.8–1.6(–2) dm. |
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Basal leaves | blade linear, 2–7(–10) cm, margins entire, repand, or shallowly dentate. |
(erect, petiole long, slender); blade spatulate to broadly oblanceolate, (3–)5–7(–12) cm, (base gradually tapering to petiole), margins entire, (apex rounded or obtuse). |
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Cauline leaves | (sessile); blade (erect), spatulate to linear, (1–)2–3(–4.5) cm, margins entire, sometimes involute, (apex acute or subacute). |
blade oblanceolate, similar to basal, (base cuneate), margins entire. |
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Racemes | dense, (exceeding basal leaves). |
dense. |
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Flowers | sepals ovate or oblong, (4.5–)5–6(–7) mm, (lateral pair subsaccate, cucullate, median pair thickened, cucullate apically); petals spatulate, 7–9(–11) mm (widened at base, slightly retuse). |
sepals (erect), linear to linear-oblong, somewhat boat-shaped, 7–10 mm; petals (erect at anthesis), lingulate, 11–15 mm, (claw undifferentiated from blade). |
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Fruiting pedicels | (spreading, sharply sigmoid), 8–15 mm. |
(divaricate-ascending, straight or slightly curved), 10–15 mm. |
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Fruits | (sessile or substipitate), ovate to oblong, not compressed at distal margins or apex, 5–9 mm; valves sparsely pubescent, trichomes appressed; ovules 4–8 per ovary; style 3–5 mm. |
(purplish in age), strongly didymous, semiorbicular, highly inflated, 10–18 × 14–19 mm, (papery), basal sinus usually shallow, rarely absent, apical sinus deep, narrowly V-shaped; valves retaining seeds after dehiscence, sides flat, back rounded, margins keeled, base and apex obtuse; replum narrowly oblong to linear, as wide as or wider than fruit, base slightly narrowed, apex obtusely rounded; ovules 4 per ovary; style 3–5 mm, (slender). |
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Seeds | flattened. |
slightly flattened. |
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2n | = 16, ca. 20. |
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Physaria calcicola |
Physaria lepidota |
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Phenology | Flowering May–Jun. | |||||
Habitat | Shale bluffs, limestone hillsides, gypseous knolls and ravines, calcareous substrates, grasslands and pinyon-juniper communities | |||||
Elevation | 1400-2100 m (4600-6900 ft) | |||||
Distribution |
CO; NM
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UT |
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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. 629. | FNA vol. 7, p. 648. | ||||
Parent taxa | Brassicaceae > tribe Physarieae > Physaria | Brassicaceae > tribe Physarieae > Physaria | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | Lesquerella calcicola | |||||
Name authority | (Rollins) O’Kane & Al-Shehbaz: Novon 12: 322. (2002) | Rollins: Brittonia 33: 335, figs. 1, 2. (1981) | ||||
Web links |