Belongs within: Leguminosae.
Cassia is a tropical genus of trees and large shrubs producing elongate, indehiscent fruits. Some are widely grown as ornamentals such as the golden shower C. fistula. Alexandrian senna C. senna has been used as a laxative.
Characters (from Flora of China): Trees or large shrubs. Leaves spirally arranged, often distichous, abruptly pinnate; rachis and petioles without glands; leaflets opposite, without stipels. Flowers in terminal panicles on main shoots or racemes on short side shoots; pedicels with 2 bracteoles at or shortly above base. Calyx 5-merous; sepals reflexed at anthesis. Corolla zygomorphic; petals 5. Stamens 10; filaments of 3 abaxial antesepalous stamens sigmoidally curved, usually longer than their anthers, dehiscent by slits; remaining 7 filaments straight and short, with anthers mostly dehiscent by basal pores. Legume elongate, cylindric or compressed, indehiscent. Seeds numerous, 1- or 2-seriate; funicle filiform.
Cassia
|--C. absusP03
|--C. alataBB07
|--C. aphyllaS00
|--C. auriculataRS02
|--C. australisB96
|--C. brewsteriB00
|--C. chamaechristaA37
|--C. chatelainianaK90
|--C. circinataM65
|--C. confinisMF68
|--C. covesiiG05 [=Senna covesiiH93]
|--C. crotolarioidesBTA75
|--C. didymobotryaB00
|--C. eremophilaB96
|--C. fistulaB00
|--C. glandulosaFS90
|--C. grandisB14
|--C. javanicaB00
|--C. kleiniiSR07
|--C. lanceolataD17
|--C. leschenaultianaP88
|--C. mimosoidesP03
|--C. nemophilaK90
| |--C. n. var. nemophilaK90
| `--C. n. var. platypodaK90
|--C. nigricansHK98
|--C. obovataR44
|--C. obtusifoliaC55
|--C. occidentalisM65
| |--C. o. var. occidentalisM65
| `--C. o. var. schinifoliaM65
|--C. phyllodineaK90
|--C. pleurocarpaC16
|--C. retusaS91
|--C. roemerianaG05
|--C. senna Linn. 1753 [incl. C. angustifolia Vahl 1790]SY72
|--C. sepiariaT-W89
|--C. sturtiiR44
|--C. tomentellaB00
|--C. toraBB07
`--C. venustaZ94
*Type species of generic name indicated
References
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