Contains 13 accepted taxa overall.
Characteristics
Classification
Citation
SENNA Miller, Gard. Dict. Abr., ed. 4. 1754.
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TYPE: Senna alexandrina Miller (Cassia senna Linnaeus)
Species
| Scientific Name | Common Name | Herbarium Specimens | Status | Photos |
|---|---|---|---|---|
| Senna alata | CANDLESTICK PLANT | Not Native FACU (NWPL) | ||
| Senna angustisiliqua | CARGA AGUA | Not Native | ||
| Senna atomaria | FLOR DE SAN JOSE | Not Native | ||
| Senna corymbosa | ARGENTINE WILD SENSITIVE PLANT | Not Native | ||
| Senna didymobotrya | AFRICAN SENNA | Not Native | ||
| Senna ligustrina | PRIVET WILD SENSITIVE PLANT | Native | ||
| Senna marilandica | MARYLAND WILD SENSITIVE PLANT | Native FAC (NWPL) | ||
| Senna mexicana var. chapmanii | CHAPMAN'S WILD SENSITIVE PLANT | Native Threatened-State FAC (NWPL) | ||
| Senna obtusifolia | COFFEEWEED; SICKLEPOD | Native FACU (NWPL) | ||
| Senna occidentalis | SEPTICWEED | Not Native FAC (NWPL) | ||
| Senna pendula var. glabrata | VALAMUERTO | Not Native FAC (NWPL) Y | ||
| Senna polyphylla | DESERT CASSIA | Not Native | ||
| Senna surattensis | GLOSSY SHOWER | Not Native FAC (NWPL) |
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 |
|---|---|---|---|
| Adipera | Adipera Rafinesque, Sylva Tellur. 129. 1838. | TYPE: Adipera herbertiana (Lindley) Rafinesque (Cassia herbertiana Lindley) | |
| Chamaefistula | Chamaefistula (Colladon) G. Don, Gen. Hist. 2: 106, 451. 1832. | BASIONYM: Cassia Linnaeus, sect. Chamaefistula Colladon, Hist. Nat. Med. Casses 21, 87. 1816. | TYPE: Chamaefistula bacillaris (Linnaeus f.) G. Don (Cassia bacillaris Linnaeus f.) Lectotypified by Britton & Rose, in Britton, N. Amer. Fl. 23: 231. 1930. |
| Chamaesenna | Chamaesenna (Colladon) Rafinesque ex Pittier, Arb. Arbust. Ord. Legum. 130. 1928. | BASIONYM: Cassia Linnaeus, sect. Chamaesenna Colladon, Hist. Nat. Med. Casses 23, 95. 1816. | TYPE: Chamaesenna reticulata (Willdenow) Pittier (Cassia reticulata Willdenow) Lectotypified by Britton & Rose, in Britton, N. Amer. Fl. 23: 250. 1930. |
| Cowellocassia | Cowellocassia Britton ex Britton & Rose, in Britton, N. Amer. Fl. 23: 251. 1930. | TYPE: Cowellocassia scleroxyla (Britton) Britton (Cassia scleroxyla Britton) | |
| Desmodiocassia | Desmodiocassia Britton & Rose, in Britton, N. Amer. Fl. 23: 244. 1930. | TYPE: Desmodiocassia villosa (Miller) Britton & Rose (Cassia villosa Miller) | |
| Diallobus | Diallobus Rafinesque, Sylva Tellur. 128. 1838. | TYPE: Non designatus. | |
| Ditremexa | Ditremexa Rafinesque, Sylva Tellur. 127. 1838. | TYPE: Ditremexa occidentalis (Linnaeus) Britton & Rose (Cassia occidentalis Linnaeus) Lectotypified by Britton & P. Wilson, Bot. Porto Rico 5: 371. 1924. | |
| Earleocassia | Earleocassia Britton ex Britton & Rose, in Britton, N. Amer. Fl. 23: 247. 1930. | TYPE: Earleocassia roemeriana (Scheele) Britton (Cassia roemeriana Scheele) | |
| Echinocassia | Echinocassia Britton & Rose, in Britton, N. Amer. Fl. 23: 251. 1930. | TYPE: Echinocassia aculeata (Pohl ex Bentham) Britton & Rose (Cassia aculeata Pohl ex Bentham) | |
| Emelista | Emelista Rafinesque, Sylva Tellur. 127. 1838. | TYPE: Emelista obtusifolia (Linnaeus) Rafinesque (Cassia obtusifolia Linnaeus) | |
| Gaumerocassia | Gaumerocassia Britton ex Britton & Rose, in Britton, N. Amer. Fl. 23: 252. 1930. | TYPE: Gaumerocassia peralteana (Kunth) Britton (Cassia peralteana Kunth) | |
| Herpetica | Herpetica (Colladon) Rafinesque, Sylva Tellur. 123. 1838. | BASIONYM: Cassia Linnaeus, sect. Herpetica Colladon, Hist. Nat. Med. Casses 21, 91. 1816. | TYPE: Herpetica alata (Linnaeus) Rafinesque (Cassia alata Linnaeus) |
| Isandrina | Isandrina Rafinesque, Sylva Tellur. 126. 1838. | TYPE: Isandrina arborescens Rafinesque, nom. illegit. (Cassia emarginata Linnaeus) | |
| Leonocassia | Leonocassia Britton ex Britton & Rose, in Britton, N. Amer. Fl. 23: 268. 1930. | TYPE: Leonocassia stenophylla (Bentham) Britton (Cassia stenophylla Bentham) | |
| Palmerocassia | Palmerocassia Britton ex Britton & Rose, in Britton, N. Amer. Fl. 23: 253. 1930. | TYPE: Palmerocassia wislizeni (A. Gray) Britton (Cassia wislizeni A. Gray) | |
| Panisia | Panisia Rafinesque, Sylva Tellur. 128. 1838. | TYPE: Panisia biflora (Linnaeus) Rafinesque (Cassia biflora Linnaeus) | |
| Peiranisia | Peiranisia Rafinesque, Sylva Tellur. 127. 1838. | TYPE: Peiranisia aversiflora (Hooker) Rafinesque (Cassia aversiflora Hooker) | |
| Phragmocassia | Phragmocassia Britton & Rose, in Britton, N. Amer. Fl. 23: 245. 1930. | TYPE: Phragmocassia skinneri (Bentham) Britton & Rose (Cassia skinneri Bentham) | |
| Pseudocassia | Pseudocassia Britton & Rose, in Britton, N. Amer. Fl. 23: 230. 1930. | TYPE: Pseudocassia spectabilis (de Candolle) Britton & Rose (Cassia spectabilis de Candolle) | |
| Psilorhegma | Psilorhegma (Vogel) Britton & Rose, in Britton, N. Amer. Fl. 23: 255. 1930. | BASIONYM: Cassia Linnaeus, sect. Psilorhegma Vogel, Gen. Cass. Syn. 8, 47. 1837. | TYPE: Psilorhegma planisiliqua (Linnaeus) Britton & Rose (Cassia planisiliqua Linnaeus) |
| Pterocassia | Pterocassia Britton & Rose, in Britton, N. Amer. Fl. 23: 243. 1930. | TYPE: Pterocassia galeottiana (Martens) Britton & Rose (Cassia galeottiana Martens) | |
| Sciacassia | Sciacassia Britton ex Britton & Rose, in Britton, N. Amer. Fl. 23: 252. 1930. | TYPE: Sciacassia siamea (Lamarck) Britton (Cassia siamea Lamarck) | |
| Sericeocassia | Sericeocassia Britton ex Britton & Rose, in Britton, N. Amer. Fl. 23: 246. 1930. | TYPE: Sericeocassia uniflora (Miller) Britton (Cassia uniflora Miller) | |
| Tagera | Tagera Rafinesque, Sylva Tellur. 129. 1838. | TYPE: Tagera filiformis Rafinesque (Cassia tagera Linnaeus) | |
| Tharpia | Tharpia Britton & Rose, in Britton, N. Amer. Fl. 23: 246. 1930. | TYPE: Tharpia pumilio (A. Gray) Britton & Rose (Cassia pumilio A. Gray) | |
| Vogelocassia | Vogelocassia Britton ex Britton & Rose, in Britton, N. Amer. Fl. 23: 258. 1930. | TYPE: Vogelocassia leiophylla (Vogel) Britton (Cassia leiophylla Vogel) | |
| Xerocassia | Xerocassia Britton & Rose, in Britton, N. Amer. Fl. 23: 246. 1930. | TYPE: Xerocassia armata (S. Watson) Britton & Rose (Cassia armata S. Watson) |