HUBBARD. — GRAMINEAE FROM BRITISH HONDURAS. 493 



IV. ON THE GRAMINEAE COLLECTED BY PROF. 

 MORTON E. PECK LN BRITISH HONDURAS, 1905-07. 



By F. Tracy Hubbard. 



Prof. Peck's collection of grasses from British Honduras includes 

 four new species and a number of plants that are little known, several 

 of them not previously reported from Central America. The grasses 

 indicate that the flora of British Honduras is composed of some North 

 Mexican, but chiefly of West Indian and South American elements; 

 a fact which Prof. Robinson tells me is true of the other families. 



A list of the species collected is as follows — 



Tripsacum dactyloides L. Sp. PL ed. 2, 2: 1378 (17G3). — Pine 

 ridge, Ycacos Lagoon, March 8, 1907, M. E. Peck, no. 703. 



Manisuris granularis (L.) Sw. Prodr. Veg. Ind. Occ. 25 (1788). — 

 Open ground, Toledo, February 7, 1907, M. E. Peck, no. 653. 



IscHAEMUM LATiFOLiUM Kuuth, Rcv. Gram. 1: 371, t. 99 (1830). — 

 Swampy ground near Manatee Lagoon, December 30, 1905, M. E. 

 Peck, no. 254. 



Trachypogon plumosus (Humb. & Bonpl.) Nees, Agrost. Bras. 344 

 (1829). — Pine ridge near Manatee Lagoon, September 8, 1905, M. E. 

 Peck, no. 139. 



Andropogon condensatus HBK. Nov. Gen. et Spec. 1 : 188 (1816). 

 — Pine ridge near Manatee Lagoon, June 21, 1905, M. E. Peck, no. 59. 



Andropogon domingensis (Spreng.), comb. nov. A. kirtiflorus 

 Kunth, Rev. Gram. 2 : 569, t. 198 (1832). Sfrcptachne domingensis 

 Spreng. ex Schultes, Mant. 2 : 188 (1824). Schizachyrium domingense 

 (Spreng.) Nash in No. Am. Fl. 17 : 103 (1912).— Pine ridge near Man- 

 atee Lagoon, January 8, 1906, M. E. Peck, no. 282. There are three 

 older uses of the combination A. domingensis viz. Steud. Nom. ed. 1, 

 45 (1821); Spreng. ex Steud. Nom. ed. 2, 1: 91 (1841) in syn; and 

 Fourn. Mex. PI. 2: 61 (1886). The second use being in synonymy is 

 invalid and as the first and third uses are both based on Anatherum 

 domingense R. & S. Syst. Veg. 2: 809 (1817) which is given as a syno- 

 nym of Andropogon leucostachyus HBK. (1816) [teste specim.] cf. 

 Kunth, Rev. Gram. 1: 164 (1824) and generally so considered, — they 

 do not interfere with the present combination. 



Andropogon leucostachyus HBK. Nov. Gen. et Spec. 1: 187 

 (1816). — Pine ridge near Manatee Lagoon, August 10, 1905, M. E. 

 Peck, no. 116. 



