RECENT LITERATURE. 



A Synopsis of Mexican and Central American Umbellifercr. By 

 John M, Coulter and J. N. Rose, Proc. Wash. Acad. Sci. vol i, 

 pp. 111-159. Jan. 8, 1900, PI. 1-12. 



Monograph of the North American Umbelliferce. By John M. 

 Coulter and J. N. Rose, Contr. from the U. S. National 

 Herbarium vol. vii, No 1. Dec. 31, 1900. PI. 1-9. 



The second of these papers should have included in the title 

 "North of Mexico," for it stops at our southern border. The 

 two papers taken together represent the Umbelliferae of North 

 America so far as known, and are invaluable to the working 

 botanist. They show the painstaking care for which the 

 authors are so well known. The genera are arranged as in 

 Engler & Prantl's Pfianzenfamileen, "which is by far the most 

 masterly presentation of the group which has yet appeared." 

 The work of Drude is, however, very much more conservative 

 than the one under notice. 



In the Mexican Flora the number of genera and of endemic 

 species have been nearly doubled since the publication of Hems- 

 ley's Biologia. In the flora north of Mexico covered by the 

 Monograph 30 genera and 150 species have been added to the 

 number in the Revision by the same authors in 1888. The 

 changes made are sweeping in character, Peucedanum, Selinum 

 and Velaea are excluded from our flora; Centella is separated 

 from Hydrocotyle; Osmorrhiza and Glycosma are retired in favor 

 of Washingtonia; Musenium is changed to Musineon; the 

 species formerly under Deweya are, with the exception of D. 

 arguta, referred to a new genus, Drudeophytum; Leptocaulis 

 becomes Spermolepis; Deringa takes the place of Cryptotsenia; 

 Taenidia is substituted for Smymium integerrimum; Discopleura 

 is changed to Ptilimnium; Crantzia to Lilaeopsis; Phellopterus 

 Benth. is changed to Glehnia, while Phellopterus Nutt. is ap- 

 plied to one of the 6 genera into which Cymopterus is divided; 

 Tiedemannia is changed to Oxypolis; Peucedanum, as to the 

 American species, is divided between Lomatium, Euryptera and 

 Cynomarthrum. 



