Physaria ovalifolia |
Physaria densiflora |
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roundleaf bladderpod |
denseflower bladderpod, low bladderpod |
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Habit | 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). | Annuals or biennials; caudex simple or branched, (relatively small, cespitose); densely pubescent, trichomes (spreading, sessile or short-stalked), 5–7-rayed, rays distinct and simple, (tuberculate, finely tubercled with a U-shaped notch on one side). | ||||
Stems | few to several from base, erect or outer decumbent, 0.5–2.5 dm. |
simple or few to several from base, erect or decumbent, (rarely branched, usually leafy), to 4 dm. |
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Basal leaves | blade suborbicular to elliptic or ovate or deltate, 0.5–2(–6.5) cm, margins entire or shallowly dentate. |
blade lyrate-pinnatifid, 1–7 cm, margins entire or shallowly dentate. |
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Cauline leaves | (proximal shortly petiolate, distal usually sessile); blade narrowly elliptic or obovate, (0.5–)1–2.5(–4) cm, margins entire. |
(sessile or shortly petiolate); blade narrowly obovate to elliptic, 0.5–6 cm, margins entire, repand, or shallowly dentate. |
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Racemes | compact, (± subumbellate to densely corymbiform, elongated or not). |
dense, (elongated in fruit, often subtended by distal cauline leaves). |
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Flowers | 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). |
sepals elliptic, 3.7–7.2 mm, (lateral pair somewhat cucullate, median pair thickened apically); petals (yellow to orange-yellow), obovate to obdeltate, (4.5–)7–10(–11) mm, (tapering to short claw, apex often emarginate). |
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Fruiting pedicels | (usually spreading at right angles, sometimes nearly erect, ± straight), 5–15(–20) mm, (stout). |
(usually divaricate-spreading, straight or slightly curved, delicate, sometimes drooping, especially on herbarium specimens), 7–10 mm, (somewhat rigid). |
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Fruits | (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. |
(sessile or substipitate), globose or broadly obovate, not inflated, 4–6 mm, (smooth); valves (not retaining seeds after dehiscence), glabrous; replum as wide as or wider than fruit; ovules 8–16 per ovary; style 2–5 mm. |
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Seeds | flattened. |
flattened. |
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2n | = 14. |
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Physaria ovalifolia |
Physaria densiflora |
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Phenology | Flowering Mar–May. | |||||
Habitat | Sandy, granitic, or calcareous soils, sandy ledges, limestone outcrops, rocky prairies, uplands | |||||
Elevation | 30-400 m (100-1300 ft) | |||||
Distribution |
CO; KS; NE; NM; OK; TX
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TX |
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Discussion | Subspecies 2 (2 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Alyssum densiflorum (A. Gray) Kuntze (1891), not Desfontaines (1808) is an illegitimate name, sometimes found in synonymy with Physaria densiflora. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 7, p. 655. | FNA vol. 7, p. 633. | ||||
Parent taxa | Brassicaceae > tribe Physarieae > Physaria | Brassicaceae > tribe Physarieae > Physaria | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | Lesquerella ovalifolia, Lesquerella engelmannii subsp. ovalifolia | Vesicaria densiflora, Lesquerella densiflora | ||||
Name authority | (Rydberg) O’Kane & Al-Shehbaz: Novon 12: 326. (2002) | (A. Gray) O’Kane & Al-Shehbaz: Novon 12: 322. (2002) | ||||
Web links |