Physaria gracilis |
Physaria gracilis subsp. nuttallii |
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spreading bladderpod |
Nuttall's bladderpod |
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Habit | Annuals or biennials; (delicate, wiry); with a fine taproot; pubescent, trichomes (sessile or subsessile), 4–7-rayed, rays distinct, usually furcate, occasionally bifurcate, (smooth to somewhat tuberculate). | |||||
Stems | simple to several from base, erect, often outer decumbent, (unbranched or branched distally), 1–7 dm. |
usually less than 3 dm; bud clusters erect. |
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Basal leaves | blade oblanceolate to elliptic, 1.5–8(–11.5) cm, margins lyrate-pinnatifid to dentate or repand, (abaxial surface densely pubescent, adaxial sparsely pubescent). |
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Cauline leaves | (proximal petiolate, distal sessile); blade oblanceolate to oblong, 1–7 cm, margins dentate to repand. |
blade margins frequently repand, occasionally dentate. |
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Racemes | loose, (elongated). |
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Flowers | sepals elliptic or broadly ovate, 3–6.5(–8) mm, (median pair slightly thickened apically, cucullate); petals (yellow to orange), broadly obovate, 6–11 mm, (narrowing gradually to short claw). |
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Fruiting pedicels | (usually divaricate-spreading, sometimes horizontal or shallowly recurved, straight or slightly curved), (7–)10–20(–25) mm, (slender or stout). |
slender. |
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Fruits | (stipitate or subsessile, gynophore 1–2 mm), globose, subglobose, obpyriform, or obovoid, not or slightly inflated, 3–9 mm; valves (not retaining seeds after dehiscence), glabrous throughout or sparsely pubescent inside; replum as wide as or wider than fruit; ovules 8–20(–28) per ovary; style 2–4.5 mm. |
stipitate (gynophore slender), obpyriform to narrowly obovoid, (5–)6–9 mm, base truncate. |
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Seeds | slightly flattened. |
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2n | = 12. |
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Physaria gracilis |
Physaria gracilis subsp. nuttallii |
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Phenology | Flowering Apr–May. | |||||
Habitat | Prairies, pastures, hillsides, rocky limestone, shallow soil of glades, roadsides, open fields | |||||
Elevation | 150-500 m (500-1600 ft) | |||||
Distribution |
AL; IA; IL; KS; LA; MO; MS; OK; TN; TX
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KS; OK; TX |
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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. 641. | FNA vol. 7, p. 641. | ||||
Parent taxa | Brassicaceae > tribe Physarieae > Physaria | Brassicaceae > tribe Physarieae > Physaria > Physaria gracilis | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | Vesicaria gracilis, Alyssum gracile, Lesquerella gracilis | Vesicaria nuttallii, Alyssum nuttallii, Alyssum repandum, Lesquerella gracilis subsp. nuttallii, Lesquerella gracilis var. repanda, Lesquerella nuttallii, Lesquerella repanda, P. gracilis var. repanda, Vesicaria repanda | ||||
Name authority | (Hooker) O’Kane & Al-Shehbaz: Novon 12: 323. (2002) | (Torrey & A. Gray) O’Kane & Al-Shehbaz: Novon 12: 323. (2002) | ||||
Web links |