198 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



652; PringleSVd'i. Guatemala: Cook & Griggs 691. Costa Rica: Pittier 2407 , 11246; 

 Biolley 7469; Tonduz 4S67. Brazil: Commis. Geogr. S. Paulo 2800. 



In the colliection of Haenke at the herbarium of the German University at Prague 

 there are, under Thysanachne peruviana, two specimens. One is accompanied by the 

 label, "Peruan. mont. guanoc. Hanke." This specimen corresponds to Presl's 

 description of this species and agrees with a duplicate in the Bernhardi Herbarium 

 at the Missouri Botanical Garden figured by Scribner.a The other specimen is 

 A. martinicensis Trin. 



17. TRISCENIA Griseb. Mem. Amer. Acad. n. ser. 8: 534. 1862. 



1. Triscenia ovina Griseb. Mem. Amer. Acad. n. ser. 8: 534. 1862. 



Banks of creeks. May 28, Wright 756. 



The Grisebach specimen is from eastern Cuba in 1859, no. 756. 



Grisebach& cites this number also under Isachne leersioides. This appears to be an 

 error, as. in Grisebach 's herbarium this number occurs only with Triscenia ovina. 

 Wright's 756 in the Gray Herbarium is from "banks of Pinal Creek in small dense 

 tufts, Monte Verde, Aug. 10, 1859." 



18. REIMAROCHLOA gen. nov. 



Spikelets lanceolate, acuminate, solitary, subsessile along one side of a flattened 

 narrow rachis (the back of the fertile lemma turned toward it), forming few to several 

 slender racemes, approximate at the summit of the culm, spreading or reflexed at 

 maturity; glumes obsolete except in the terminal spikelet in which one glume is 

 frequently present; sterile lemma exceeding the fruit; fertile lemma scarcely indu- 

 rated, faintly nerved, long-acuminate, inrolled at the base only, the palea of similar 

 texture, free nearly half its length. 



Perennials of the tropics and'subtropics of the Western Hemisphere. 



The genus Reimaria as established by Fliigge on the single differentiating character 

 "uniglumis, " included three species, the first two of which, R. Candida and R. elegans, 

 differ from Paspalum only in having spikelets without glumes, a character which is 

 unreliable in this group of Paniceae. The third species, R. acuta, together with 

 those added to Reimaria by later authors, constitutes a distinct genus distinguished 

 by the characters in the diagnosis above. Considering that Fliigge 's three spe- 

 cies are not congeneric, but that the first two on the one hand and the third on the 

 other must be separated, it is necessary that the name Reimaria go with the larger 

 group, c Reimaria then becomes a synonym of Paspalum, or if the glumeless species, 

 P. candidum H. B. K., P. pulchellum H. B. K., P. elongatum Griseb., etc., be con- 

 sidered generically distinct, the name would apply to this group. Fori?, acuta and its 

 allied species the above name is proposed with Reimaria acuta Fliigge as the type: 

 Reiinarochioa acuta (Fliigge). Paspalum vaginatuTn Sw. and P. distichum L. (in 

 which both glumes are occasionally present) in habit and texture of the acute fruits 

 show a closer affinity to this genus than do the glumeless species mentioned above. 



Spikelets about 2 mm. long 1 . R. hrasiliensis. 



Spikelets about 5 mm. long 2. R. oligostachya. 



1. Reimarochloa brasiliensis (Spreng.). 



Agrostis hrasiliensis Spreng. Nov. Prov. Hal. 45. 1819. 



Reimaria hrasiliensis Schlecht. Bot. Zeit. 10: 17. 1852. 



Panicum oxyantlium Steud. Syn. PL Glum. 1: 41. 1854. 



Wright 3437; Isle of Pines, Curtiss 497. 



Grisebach 's specimen of this number is from '^ savannas, Hanabana, May 22." 

 Another specimen in his herbarium from "low wet ground around ponds, Hanabana" 



a Rep. Mo. Bot. Gard. 10: pi. 6. 1899. 



& Cat. PI. Cub. 234. 1866. ^ 1 7 



c American Code, Canon 15 (Bull. Torr. Club 3^: 17^. 19(W); Vienna Code, Art. 45. 



^' ^ '^ZZ'Vo U^t^^, G(a4-^. 



