14 SYLVA TELLUR. 



Rumph. 3 1 10. Lam. Bosc.) foliolis 4-6 ovatis 

 integris, racemis terminalibus large useful tree 

 of Molucas, excellent timber, flowers yellow, 

 pods one foot long ; sap red like blood, staining 

 permanently. This and other Indian names 

 above, are certainly as good as Piper, Cassia, 

 Caffea, and 50 similar Indian or Arabic names 

 of Linneus, If Bessia is not good enough or 

 too near Bassia I Dendrema or bloody tree is 

 suggested instead. 



35. GOSSYPIUM L. auct. Cotton is a fine 

 natural G. most of the sp. being frutescent ; but 

 they are as yet little understood, and the Afri- 

 can and Asiatic kinds not well described. 

 Wildenow, Lamark, Smith and Decandole have 

 but few sp. not well distinguished : Decandole's 

 account of this G, as well as Vitis and some 

 others is very imperfect, having neglected the 

 monograph of American Cottons by Rohr and 

 Bosc, which I have chiefly used in my own mo- 

 nograph. Rohr had noticed (but not well 

 named) nearly 40 years ago 34 species and va- 

 rieties, taking his characters from the seeds 

 rather than the variable leaves and glands. I 

 shall give here a synoptical view of his labor 

 and mine, having reduced them to 26 botanical 

 sp. under 3 subgenera, adding the average pro- 

 duce of Cotton by each tree. 



36. Subg. KARPAS Raf. semina scabra, 

 avena, nuda non villosa nee tomentosa, sepe 

 nigra. 



37. Subg. LEIOFAIUM R. (smooth brown) 

 semina levis venosa fuscata, vel viridis. 



38. Subg. LANIGERUM R. semina villosa vel 

 tomentosa, 



39. Gossypium (Karpas) mrgatum Raf. sp. 

 1 Rohr, Bosc. ramis virgatis, sem. magna ovata 



