Senna pendula |
Senna orcuttii |
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climbing cassia, valamuerto |
Orcutt's senna |
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Habit | Herbs, perennial, to 0.6 m. Leaves slightly sclerophyllous, 5–10 cm, dull glaucescent, sparsely hairy; stipules caducous, 1–3 mm wide; extrafloral nectaries between all leaflet pairs, stipitate; leaflet pairs 3–6, blades oblong- or ovate-elliptic, 15–40 ×7–13 mm. | |
Racemes | usually 5–25-flowered; bracts caducous. |
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Pedicels | 0–5 mm. |
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Flowers | monosymmetric (similar to S. lindheimeriana but smaller); calyx usually pale green, rarely yellow; corolla yellow, longest petal 8–10.5 mm; androecium heterantherous, stamens 7, staminodes 3; anthers 3–5 mm, dehiscing by 1 apical pore, apical appendage 0; gynoecium linear, ovules unknown; ovary densely hairy; style incurved. |
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Legumes | erect, flat, straight or slightly incurved, 40–120 × 3.5–6.5 mm, shallowly corrugated over seeds, dehiscent. |
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Seeds | brown, obovoid or oblong-obovoid. |
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Senna | pendula is often confused with close relative S. bicapsularis, which is absent from North America and has shorter pedicels, only to 5 mm (H. |
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s | . Irwin and R. |
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c | . |
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Barneby | 1982; B. |
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Marazzi | et al. |
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2006b | ). |
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Senna pendula |
Senna orcuttii |
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Phenology | Flowering spring–summer. | |
Habitat | Stony hillsides, canyon floors. | |
Elevation | 1300–1800 m. (4300–5900 ft.) | |
Distribution |
Mexico; Central America; South America; West Indies [Introduced, Florida; introduced also in Africa (South Africa), Pacific Islands, Australia]
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NM; TX; Mexico (Chihuahua, Coahuila) |
Discussion | Varieties 18–20 (1 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 11. | FNA vol. 11. |
Parent taxa | Fabaceae > subfam. Caesalpinioideae (excluding Mimosoid clade) > Senna | Fabaceae > subfam. Caesalpinioideae (excluding Mimosoid clade) > Senna |
Sibling taxa | ||
Subordinate taxa | ||
Synonyms | Cassia pendula, Chamaefistula pendula | Peiranisia orcuttii, Cassia orcuttii |
Name authority | (Humboldt & Bonpland ex Willdenow) H. S. Irwin & Barneby: Mem. New York Bot. Gard. 35: 378. (1982) | (Britton & Rose) H. S. Irwin & Barneby: Phytologia 44: 500. (1979) |
Web links |