CONTRIBUTIONS FROM THE GRAY HERBARIUM OF 

 HARVARD UNIVERSITY. 



New Series. — No. XXV. 



NEW AND OTHERWISE NOTEWORTHY ANGIOSPERMS 

 FROM MEXICO AND CENTRAL AMERICA. 



By J. M. Greexman. 



Presented May 13, 1903, by B. L. Robinson. 



The descriptions and notes in the present paper are the result of the 

 study of several series of Mexican and Central American plants, chiefly 

 from the recent collections of Cyrus Guernsey Pringle, Dr. Edward 

 Palmer, Dr. Joseph Nelson Rose, Edward William Nelson, Seiiors 

 Cassiano Conzatti and Valentin Gonzalez, C. H. T. Townsend and C. M. 

 Barber, E. W. D. Holway, Captain John Donnell Smith, Henri Pittier, 

 and Adolfo Touduz. 



The herbarium in which the types and other mentioned specimens 

 occur is indicated immediately after the citation of the numbered speci- 

 men ; and the abbreviations for the different herbaria are as follows : 

 hb. Gr. (Gray Herbarium), hb. U. S. Nat. Mus. (Herbarium of the 

 United States National Museum), hb. J. D. S. (Herbarium of John 

 Donnell Smith), hb. Inst. Phys.-Geog. Cost. Ri. (Herbarium of the 

 National Physico- Geographical Institute of Costa Rica). For the most 

 part the species represent the Metachlamydefe, especially the Compositce ; 

 although a few ArchichlamydecB, as well as Monocotyledonece, are herein 

 described. 



Rhynchospora Pringlei. Pale green : culms triangular, 1 m. or 

 more high : stem-leaves remote ; sheath slightly inflated, 5 to 7 cm. long ; 

 blade 2 to 4.5 dm. long, 8 to 10 mm. broad, hispidulous on the margins and 

 along the midrib beneath : iilflorescence cymose-paniculate ; the terminal 

 cymule subsessile or short pedunculate, the lateral on long slender pedun- 

 cles 4 to 10 cm. in length; bracts lance-attenuate; scales of the spikelet 

 broadly ovate, 1-nerved, terminated by a short awn, brown or somewhat 



