488 BOTANICAL GAZETTE [December 



New African plants. — The continuous appearance of publications dealing 

 with new plants irom Africa is an impressive illustration of the fact that it is 

 still largely an unknown continent botanically. Moore,^' in continuation of 

 his "Alabastra diversa," has published 28 new species of African plants, 

 belonging to the following families: Ericaceae (2), Asclepiadaceae (2), 

 Scrophulariaceae (13, 7 belonging to Buchnera), Gesneraceae (i), Acantha- 

 ceae (i), Verbenaceae (5), Loranthaceae (i), Euphorbiaceae (2). — J. M. C. 



Tropical American plants. — Blake" has revised the American species of 

 Homalium (Flacourtiaceae), a genus valued for its timber trees and one that 

 has been puzzling to taxonomists. He recognizes 19 species, 11 of which are 

 described as new. In the second paper cited, 13 new species are described, 

 chiefly shrubs or trees collected in Bahia, Brazil, and Colombia in connection 

 with a general survey of the timber resources. — J. M. C. 



New names. — Macbride^^ has given a good illustration of the extensive 

 changes of names necessary to conform to the international rules of botanical 

 nomenclature. In reviewing portions of the Leguminosae, he has published 

 97 new combinations and 9 new names. In the second paper cited, which 

 deals with miscellaneous families, 28 new combinations are published. — J. M. C. 



New species of Vemonia. — In studying the tribe Vernonieae for presenta- 

 tion in North American Flora, Gleason^^ has discovered 6 new species and 9 

 new varieties. He has also segregated V. lepidota Griseb. as a new genus 

 (Ekmania). — J. M. C. 



"Moore, Spencer L., Alabastra diversa. XXXI. i. Miscellanea Africana. 

 Jour. Botany 57:212-219, 244-251. 1919. 



" Blake, S. F., The genus Homalium in America. Contrib. U.S. Nat. Herb. 

 20:221-225. 1919. 



, New South American spermatophytes collected by H. M. Ctjrr.\n. 



Idem. 237-245. 1919. 



'3 Macbride, J. F., Notes on certain Leguminosae. Contrib. Gray Herb. 

 N.S. no. 59. 1-27. 1919. 



, Reclassified or new spermatophytes. Idem. 28-39. iQiQ- 



^4 Gleason, H. a., Taxonomic studies in Vemonia and related genera. Bull. 

 Torr. Bot. Club 46:235-252. 1919. 



