94 BIBLIOGRAPHY. 



Brasiliensis" of Von Martius, having found it needful to revise the 

 entire tribe Dalbergiea?, and to compare the Brazilian genera and 

 species with those of the Tropics of the Old World, has been led to 

 draw up a synopsis of the whole tribe, with brief characters of all 

 the species. 



The numerous accessions of specimens from all parts of the Tro- 

 pics since the publication of the author's Memoir in the Annal. Wie- 

 ner Mus., in 1837, have enabled him to modify the circumscription 

 of many of the genera which were then proposed, and to reduce 

 others which had been based upon insufficient material. To the de- 

 scriptive portion of this paper is prefixed an introductory chapter, 

 embracing general observations upon the main features of the Dal- 

 bergieae, their economic uses, and geographical distribution. The 

 genera are also severally reviewed. The Bosewoods of commerce are 

 furnished by members of the group. The two best varieties imported 

 from Rio are supplied by the genus Dallergia, chiefly by D. nigra ; 

 other sorts are afforded by Machcerium, and in Africa, by Pterocarpus. 

 Mr. Bentham observes, that the great majority of species of the tribe 

 occupy but very limited areas. There is not one species common to 

 Asia and America ; five or six are common to America and West 

 Africa. Of 200 American species, but 5 extend from northern or 

 central Brazil to the West Indies and Central America. The 286 

 species of Dalbergieae here described are distributed in 23 genera, 

 which are grouped under three principal sections, viz. Pterocarpeai, 

 with dry fruit, and leaflets mostly alternate along the petiole ; Lon- 

 cJiocarpece, also with dry fruit, but with the leaflets more strictly 

 opposite ; and Geoffroyece, with a usually drupaceous fruit, and a 

 single pendulous seed. 



Beurling, P. J. — Plantae vasculares seu cotyledoneae Scandinavia, 

 nempe Sveciae et Norvegiae, juxta Eegni vegetabilis systema na- 

 turale digests? . 8vo. Holmiae. 



Bianca, G. — Flora dei intorni d'^vola. Memorie che contiene la de- 

 scrizione delle piante comprese nelle classe Diadelphia. — Catan. 

 Acad. Giorn. xiv. 



Bibra Die Getreidearten und das Brod. 8vo. Niirnberg, 1860. 



Boissier, E. — Centuria Euphorbiarum. Lipsiae et Parisiis : April, 1860. 

 8vo. 



Bolle, C. — Addenda ad floram Atlantidis praeeipue insularum Canari- 

 ensium Gorgadumque. (Continuation) Bonplandia, viii. Jahrg., p. 

 130-6 (Composite) 279-87 (Labiatae, Yerbenaceae). 



Boussingatjlt, M. — De la Terre vegetale considered dans ses effets sur 

 la vegetation (Comptes Eendus, 1859). — Ann. des Sciences, Ser. iv., 

 torn, xii., p. 354-72. 



M. Boussingault's investigations bear reference to the relations 

 subsisting between the amount of matter of organic origin contained 

 in vegetable soils, and the extent to which this is really available to 

 plants. 



Braun, A. — Uebor Poly embryonic u. Keimung v. Ccelelogyne. Ein Nach- 



