Crotalaria Linnaeus (1753: 714)

Ninkaew, Sakuntala, Balslev, Henrik, Pornpongrungrueng, Pimwadee & Chantaranothai, Pranom, 2017, Crotalaria L. (Fabaceae: Faboideae) in continental Southeast Asia, Phytotaxa 320 (1), pp. 448-450 : 448-450

Crotalaria Linnaeus (1753: 714) . Type:— Crotalaria lotifolia L.

= Priotropis Wight & Arnott (1834: 180) . Type:— P. cytisoides (Roxb.) Wight & Arnott , based on Crotalaria cytisoides Roxb.

Herbs or shrublets, erect or prostrate. Leaves simple, or digitately compound 3 − 5-foliolate; stipules present or absent. Inflorescences racemose, terminal, axillary or leaf-opposed, open or capitate; bracts persistent or caducous; bracteoles inserted on the pedicel or on the calyx tube, persistent or caducous. Calyx truncate or campanulate, radial with 5 subequal lobes or bilabiate. Corolla yellow to orange or purple; standard with two basal appendages, glabrous; wings oblong, elliptic or obovate; keel connate from the middle towards the apex, incurved, beak spirally twisted or not twisted. Stamens 10, monadelphous, glabrous; anthers dimorphic, glabrous, 5 large on short filaments and 5 small on long filaments. Ovary sessile or stipitate, glabrous or hairy; style with one or two lines of hairs or dispersed pubescent. Fruits inflated, sessile or stipitate pods. Seeds reniform or harp-shaped, with or without aril.