Contains 4 accepted taxa overall.
Characteristics
Classification
Citation
SENNA Miller, Gard. Dict. Abr., ed. 4. 1754.
-
TYPE: Senna alexandrina Miller (Cassia senna Linnaeus)
Species
| Scientific Name | Common Name | Herbarium Specimens | Status | Photos |
|---|---|---|---|---|
| Senna corymbosa | Argentine Senna | |||
| Senna hebecarpa | Northern Wild Senna | |||
| Senna obtusifolia | Sicklepod, Coffeeweed | |||
| Senna occidentalis | Coffee Senna |
Identification Key
1. Leaf petiole and rachis without glands (extra floral nectaries sometimes present on stipules, bracts, or sepals)
2
1. Leaf petiole or rachis with 1 or more spherical, cylindric, conic, or stipitate glands
4
2. Petiole 2-3 mm wide; fruit 4-winged
2. Petiole 0.5-1.5 mm wide; fruit flat
3
3. Leaf with (1)2-6 pairs of leaflets
3. Leaf with (8)9-16(18) pairs of leaflets
4. Gland at the base of the petiole, before the first pair of leaflets
5
4. Gland(s) on the rachis between the leaflet pair(s)
8
5. Petiolar gland cylindric to narrowly conic, ca. 2-3 mm tall; leaflets 8-11 mm wide
5. Petiolar gland spherical, ca. 1 mm tall; leaflets 10-30 mm wide, at least the larger ones
6
6. Leaf with 6-8 pairs of leaflets, strongly paler on the underside
6. Leaf with 4-5(6) pairs of leaflets, only slightly paler on the underside
7
7. Leaflets obtuse to subacute-mucronate; fruit lacking the marginal band (only light colored on the marginal ridged edge)
7. Leaflets acuminate at the apex; fruit with a conspicuous 1-3 mm wide marginal light band on the fruit body
8. Glands between the lower 2 or more pairs of leaflets
8. Gland usually solitary between the lowermost pair of leaflets
9
9. Rachis gland spheroidal to bluntly short-conic, sometimes with a short stipe
10
9. Rachis gland short-cylindric, stipe-like, or stipitate with the stipe nearly as long as the gland
11
10. Leaflets not much paler below, usually with a conspicuous apical mucro; fruit flattened, dehiscent
10. Leaflets much paler below, without an apical mucro or the mucro inconspicuous; fruit cylindric, indehiscent and irregularly breaking apart
11. Leaf with 6-10 pairs of leaflets
11. Leaf with 2-3 pairs of leaflets
12
12. Leaflets mostly acute at the apex, widest near the middle or base; fruit straight to slightly curved
12. Leaflets very broadly rounded at the apex, usually widest near the apex; fruit usually strongly curved
Genus Synonyms
| Synonym | Full Citation | Basionym | Type |
|---|---|---|---|
| No synonyms found. | |||