436 Mr. G. Bentham's Enumeration of the Plants 



the same collection contains also a remarkable variety of C. arena- 

 rium with almost emarginate leaflets. 



Allied to C. arenarium, but belonging to the second division of the 

 genus, is the following species gathered by Salzmann at Bahia. 



C. Sahmanni, caule glubro, ramulis pedunculisque pubescentibus, foliolis 

 oblongo-ovatis acuminatis vix coriaceis supra glabris subtus ad venas pube- 

 Tulis demum glabris, pedunculis petiolo brevioribus vel vix longioribus apice 

 umbellato-plurifloris, bracteoHs ovatis obliquis acuminatis calycis dente in- 

 feriore brevioribus, calycibus puberulis quadrifidis, dentibus superioribus latis 

 tubo aequilongis, supremo bidentato, infimo longissimo lineari. 



Blanchet*s n. 2705. from the Serra Jacobina in the province of 

 Bahia is a curious little species, allied to C. rotundifolium, but with 

 five to seven smaller and narrower leaflets. My specimen however 

 is not good enough to establish the diagnosis satisfactorily. 



118. Centrosema macrocarpum, caule juniore petiolisque pilosis deraum 

 glabrato, foliolis ovatis breviter acuminatis vix coriaceis supra vel utrinque 

 glabr-is, pedunculis petiolum subsequantibus apice dense plurifloris, bracteolis 

 dentibus calycinis subbrevioribus, calycibus latissimis 4-fidis, laciniis tubo 

 longioribus divaricatis, suprema bidentata, inferioribus approximatis. — Bri- 

 tish Guiana. Schomburgk. 



This species diff^ers chiefly from C. grandiflorum by its thinner 

 leaves perfectly glabrous, or with only a few hairs along the midrib. 

 Its beans, according to Schomburgk, are eaten by the Indians, under 

 the name of Commawissi. He adds, that the pods are uncommonly 

 large ; in the single specimen sent by him the young ones are already 

 nine inches long. 



Gardner's n. 173. from Rio Janeiro is Centrosema decumbens. 

 Mart. ; his n. 356. from the Organ Mountains is a new species be- 

 longing to the same division and may be thus characterized : — 



C. dasyanthum, caule glabro vel ramulis petiolisque junioribus puberulis, 

 foliolis ovali-oblongis acuminatis vix coriaceis utrinque glabris, pedunculis 

 brevibus apice paucifloris, bracteolis dentibus calycinis brevioribus rufo-vil- 

 losis, calycibus 4-fidis laciniis lato-lanceolatis tubo sublongioribus rufo-vil- 

 losis supremo bifido, vexillo extus rufo-villosissimo. 



Blanchet's n. 2721. from the Serra Jacobina is a slight variety of 

 Periandra dulcis, Mart., and his No. 2555. from the same chain is 

 P. coccinea, Benth. 



119. Stenolohium coeruleum, Benth. in Ann. Mus. Vind. ii. p. 125. — Bri- 

 tish Guiana, Schomburgk, n. 218. 



This is a widely diffused and apparently common plant ; besides 

 the numerous specimens gathered by Pohl, Martius, Salzmann, and 

 others in various parts of Brazil, it is foiuid in the Isle of St. Vin- 



