322 BOTANICAL GAZETTE [October 



Ridley 7 has described two new genera of Malayan plants, namely Peri- 

 petasma (Menispermaceae) and Scaphocalyx (Flacourtiaceae). 



Minod 8 has made a very detailed study of the American species of Stemodia 

 (Scrophulariaceae), recognizing 30 species, 5 of which are described as new. 

 Thirteen species are eliminated from the genus, and in this connection the 

 following new genera are established: Chodaphyton, Lendneria, Verena, and 

 Valeria. 



Smith 9 has segregated a new genus (Whytockia) from Staur anther a, 

 naming it for Mr. James Whytock, president of the Botanical Society of 

 Edinburgh. It occurs in mountain forests of western China (Yunnan). The 

 statement is made that recent collections show that southern and western 

 China is rich in Gesneraceae. 



Miss Currie 10 has published a critical study of Myxomycetes, chiefly 

 from Ontario, representing 117 species and varieties, included in 29 genera. 

 In several cases she has uncovered new facts as to morphology, physiology, 

 and distribution. In the list of species and varieties are included 47 not 

 previously recorded from Ontario, 36 new to Canada, and 5 new to North 

 America. The plasmodia of two species were observed for the first time, a 

 number are recorded as parasitizing fungi, and others as fruiting on leaves or 

 stems of grasses or herbs to which they are injurious in some cases. The con- 

 tribution represents a valuable addition to our knowledge of this interesting 

 group. 



Hitchcock and Mrs. Chase, 11 in continuation of their studies of North 

 American grasses, have published a revision of four genera of Paniceae, with 

 full descriptions, details of distribution, and analytical keys. Ichnanthus is 

 tropical American and includes 10 species, 5 of which have been published 

 recently by the authors. Lasiacis is also tropical American, one species 

 extending into Southern Florida. It was segregated from Panicum some years 

 ago by Hitchcock, and is now recognized to include 15 species, one of which 

 is described as new. Brachiaria extends into the southern United States and 

 includes 5 species, one of which is new. Cenchrus, widely distributed, includes 

 13 species. The first two genera are revised by Hitchcock, and the last 

 two by Mrs. Chase. — J. M. C. 



7 Ridley. H. N., New Malayan plants. Jour. Botany 58:147-149. 1920. 



8 Minod, Marcel, Contribution a Tetude du genre Stemodia et du groupe des 

 Stemodiees en Amerique. These no. 606. Institut de Botanique, Univ. Geneve, 

 pp. 103. Jigs. 41. 1918. 



9 Smith, W. W., Whytockia, a new genus of Gesneraceae. 

 Bot. Soc. Edinburgh 27:338, 339. pi. 7. 1919. 



Trans, and Proc 



10 



Currie, Mary E., A critical study of the slime-molds of Ontario. Trans 



Roy. Can. Inst. 12:247-308. pis. 8-10. 1919. 



11 



Hitchcock, A. S., and Chase, Agnes, Revisions of North American grasses 



Contrib. U.S. Nat. Herb. 22:1-71. pis. 24. figs. 20. 1920. 



