Abrus  

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 China (Gansu, Hunan, Fujian, Guizhou, Guangxi and Guangdong).  Abrus bifurcatus: Dai and Zhang 2002; China (Guangdong).   Abrus biprocessus: Li et al. 2011, Li and Wang 2006; China (Guizhou).   Abrus breviolus: Dai and Zhang 2008; China (Zhejiang).   Abrus brevis: Dai and Zhang 2002; China (Guangxi).   Abrus concavelus: Li and Wang 2006; China (Fujian).   Abrus coneus: Dai and Zhang 2002; China (Gansu, Guizhou and Hubei).   Abrus graciaedeagus: Li et al. 2011; China (Guangxi).   Abrus hengshanensis: Dai and Zhang 2002; China (Hunan).   Abrus huangi: Dai and Zhang 2002; China (Guangxi).   Abrus leigongshanensis: Li and Wang 2006; China (Guizhou).   Abrus langshanensis sp. n.; China (Hunan).   Abrus wuyiensis: Dai and Zhang 2002; China (Fujian, Sichuan and Zhejiang).   Abrus xishuiensis sp. n.; China (Guizhou).   (Modified from Dai and Zhang 2008)  1 Basal projection of aedeagal shaft shorter than half length of shaft, reduced or absent (Fig. 23)  2 – Basal projection of aedeagal shaft equal to or longer than half length of shaft (Fig. 11)  3 2 Subgenital plate short, with posterior margin truncate Abrus breviolus – Subgenital plate moderately long, with posterior margin rounded (Fig. 19)  Abrus langshanensis sp. n.  3 Aedeagal shaft about half length of basal projection, apical appendages extended posterad Abrus brevis – Aedeagal shaft as long as or longer than basal projection, apical appendages extended basolaterad (Figs 11, 12)  4 4 Pygofer with one long process at each posterodorsal margin Abrus wuyiensis – Pygofer without processes at posterodorsal margin (Fig. 6)  5 5 Pygofer with one pair of processes at each posteroventral margin Abrus biprocessus – Pygofer with one process or without processes at each posteroventral margin 6 6 Apical appendages of aedeagus branched at apex (Figs 11, 12)  7 – Apical appendages of aedeagus not branched at apex 10 7 Apical appendages of aedeagus with small process at base 8 – Apical appendages of aedeagus without process at base (Figs 11, 12)  Abrus xishuiensis sp. n.  8 Pygofer with long process at posteroventral corner; basal projection of aedeagus short, about half length of shaft Abrus coneus – Pygofer without long process at posteroventral corner, basal projection of aedeagus as long as shaft 9 9 Basal projection of aedeagus with pair of triangular appendages laterally at midlength, aedeagal shaft without ventral flange at apex Abrus bifurcatus – Basal projection of aedeagus without appendage laterally at midlength, aedeagal shaft with ventral triangular flange at apex Abrus concavelus 10 Pygofer without process at ventral margin 11 – Pygofer with process at ventral margin 12 11 Apical appendages of aedeagus directed dorsally, basal projection of aedeagus without lateral appendages in ventral view Abrus leigongshanensis – Apical appendages of aedeagus directed lateroventrally, basal projection of aedeagus with lateral appendages in ventral view Abrus graciaedeagus 12 Pygofer with process at caudoventral margin; basal projection of aedeagus dentate along ventral margin and with lateral appendages directed ventrally Abrus huangi – Pygofer with digitate process in the middle of ventral margin; basal projection of aedeagus with a long process subapically and lateral appendages directed dorsally Abrus hengshanensis

Abrus

Slightly woody vines, twining. Leaves alternate, paripinnate; leaflets opposite; stipels minute, appressed to the rachis; stipules minute or foliaceous. Inflorescences of axillary, lateral, or terminal pseudoracemes; bracts and bracteoles minute, caducous; pedicels short. Calyx campanulate, with 5 minute lobes at the apex; corolla pink, white, or reddish; standard ovate or obovate, retuse at the apex; wings recurved, shorter than or as long as the keel; stamens 9, the filaments united into a long tube; ovary superior, almost sessile, with numerous ovules, the style smooth, the stigma capitate. Fruit a flattened, dehiscent legume; seeds numerous, ellipsoid or almost globose, red with a black spot at the base or completely brown. A genus of 17 species, native to the paleotropics.