171 



Cypripediitms. — Rocky Mountain, — Sereno Watson. (Garden 

 and Forest, i., 138. 



Dandelion,— The Common, — F. LcRoy Sargent (rup. Sci. 



News, xxii., 65-67, illustrated.) 

 Delphini7im viride,—Ztr^no Watson. (Garden and Forest, i., 



149, fig. 2g,) 

 EntomopktkorecB of the United 5/^/^^,— Roland Thaxter. (Mem, 



Bost Soc. Nat Hist, iv., 133-201; eight plates. 



This is in the main a monograph of the fungus genus Em- 

 pusa^ the members of which 'maintain a parasitic existence within 

 the tissues of insects. Mr. Thaxter recognizes twenty-six species, 

 sixteen of them new to science. Entoinophthora and Triplo- 

 sporinm are relegated to subgeneric rank. E, Phytonomi, J. C 

 Arthur, is referred to Enipnsa sphcerosperma (Fres.), Thaxter, and 

 E. Calopteni^ Bessey, to Empnsa Grylli (Fres.), Nowakowski. 

 The monograph is prefaced by an account of the structure, Hfe 

 history and habitat of the organisms and of their classification 

 by European mycologists. Besides Empnsa^ the genera Mas- 

 sospora. Peck, and Basidiobohis^ Eidam, are recognized, each with 

 a single species. A list of papers consulted and indices of hosts, 

 and of genera and species are appended. The w^ork is superbly 

 illustrated by lithograph plates of Meisel, from figures drawn by 

 the author, there being 429 illustrations. Mr. Thaxter desires 

 to continue the work so as to include all North American ento- 

 mogenous plants. Tliose who have it in their power to aid him 

 m the procuring of additional material, should consider it a privi- 

 ^^ge, for work of this very high order of merit deserves every 



encouragement 



Flora de Mexico. — Bosqnejo de la Geograjia y Rasgos principales 



de la. — W. T. Hemsley, translated by Dr. Jose Ramirez, from 



the Botany of the Biologia Centrali- Americana. (La Natu- 



raleza, 2d series, i., 67-81.) 

 Forest Vegetation of Northern Mexico.— C. G. Pringle. (Garden 



and Forest, i., 70, 116-117, 141-142, illustrated.) 

 Fuciis,~The Apical cell of—W, McMichael Woodworth. (Ann. 



of Bot, i., Nos. 3 and 4; reprint, pp. 9, plate x.) 



X 



Laboratory of Harvard College. 



Crypt 



