liidens. syngenesia aequat.is. 411 



A native uf Silhet. In tlie Botanic garden it is in flower 

 and seed the whole year. The leaves are used as a [)ot-herb 

 by the natives of that district. 



BIDEXS. Sclireh. gen. N. 1267. 



Calyx imbricated. Corol with sometimes a ligulate floret 

 or two ill the circumference. Seed crowned with straight, 

 hispid, barbed awns. Receptacle chafly. 



1. B. trijidu. Buck. 



Annual, erect, smooth. Leaves opposite, three-parted, gross- 

 ly serrate, smooth. Flouiers solitary, ped uncled ; the exte- 

 rior calyx twice the length of the flowers, its leaflets wedge- 

 shaped. Seeds flat, cuneate, smooth, two-horned. 



Found in Nepal by Dr. Buchanan, who sent the seeds to 

 the Botanic garden, where the plants blossom during the dry 

 season, but perish when the rains begin in June. 



Stem erect, round, smooth, jointed. Branches opposite, 

 and like the stem, but mucli shorter, height of the whole 

 plant in the Botanic garden about one foot. Leaves opposite, 

 on concave, winged petioles, simple, and three-parted, gross- 

 ly serrate, smooth, the simple leaves or segments of the divid- 

 ed ones, nearly lanceolate, and obtuse. Flowers peduncled, 

 solitary, terminal, erect. Calyx double, the exterior leaflets 

 five, M'edge-shaped, and nearly twice the length of the flower, 

 the inner ones oblong, and rather shorter then the corollets. 

 Seeds flat, wedge-shaped, smooth, without angles ; horns two, 

 rarely three, backwardly hispid, diverging. 



JSTole. In Nepal Dr. Buchanan says the leaves were often 

 bi pinnate. 



2. B. bipinnata. Willd. iii. p. 1725. 



Annual. Leaves bipinnate, gashed and dentate-serrate. 

 Flowers terminal. Calyx of from seven to nine simple, cla- 

 vate, ciliate leaflets, from two to four neuter ligulate florets 



Z z2 



