Senna corymbosa |
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Argentine senna |
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Habit | Shrubs or trees, to 3.5 m. |
Leaves | mesophyllous, 5.5–9.5 cm, glabrous or glabrate; stipules caducous; extrafloral nectary 1, between first leaflet pair, sessile or short-stipitate; leaflet pairs 3, blades oblong-lanceolate, 25–60 × 5–14 mm. |
Racemes | 4–18-flowered; bracts caducous. |
Pedicels | 13–23 mm. |
Flowers | monosymmetric; calyx brownish to greenish yellow; corolla golden yellow, longest petal 8–16 mm; androecium heterantherous, stamens 7, middle stamens 1/2 as long as abaxial or smaller, staminodes 3; anthers of middle stamens to 3.6–4.8 mm, of abaxial stamens 5.2–6.5 mm, dehiscing by nearly U-shaped pore, apical appendage inconspicuous; gynoecium incurved, ovules 34–50; ovary hairy; style slightly incurved. |
Legumes | somewhat pendulous, cylindrical, straight, 40–120 × 6–10 mm, corrugated over seeds, indehiscent. |
Seeds | dull brown or dark reddish brown, obliquely obovoid or oblong-ellipsoid. |
2n | = 28. |
Senna corymbosa |
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Phenology | Flowering early winter–mid spring. |
Habitat | Thickets, brushy stream and river banks, waste places. |
Elevation | 0–500 m. [0–1600 ft.] |
Distribution |
FL; GA; LA; MS; SC; TX; s South America |
Discussion | Senna corymbosa has been cultivated for over two centuries and is a common ornamental in many botanical gardens worldwide; it has become naturalized in warmer western Europe and South Africa (H. S. Irwin and R. C. Barneby 1982). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 11. |
Parent taxa | |
Sibling taxa | |
Synonyms | Cassia corymbosa, Adipera corymbosa |
Name authority | (Lamarck) H. S. Irwin & Barneby: Mem. New York Bot. Gard. 35: 397. (1982) |
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