198 +» CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
652; Pringle 3133. Guatemala: Cook & Griggs 691. Costa Rica: Pittier 2407, 11246; 
Biolley 7469; Tonduz 4867. Brazil: Commis, Geogr. 8. Paulo 2800. 
In the collection of Haenke at the herbarium of the German University at Prague 
there are, under Thysanachne peruviana, two specimens. One is accompanied by the 
laber, “‘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.¢ The other specimen is 
A, martinicensis Trin. 
17. TRISCENTA Grisehb. 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 Jsachne leersioides. This appears to be an 
error, as in Grisebach’s herbarium this number occurs only with T'riscenia ovina. 
Wright’s 756 in the Gray Ilerbarium 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 lliigge 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. acufa, 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 congencric, 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.° Reimaria then becomes a synonym of Paspalum, or if the glumeless species, 
P. candidum UW. B. K., P. pulchellum IL. B. K., P. elongatum Griseb., etce., be con- 
sidered generically distinct, the name would apply to this group. For R. acuta and its 
allied species the above name is proposed with Reimaria acuta lliigge as the type: 
Reimarochloa acuta (I"liigee), Paspalum vaginatum Sw. and P. distichum 1. (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..........002.00.00022020020222.-20--- 1. R. brasiliensis. 
Spikelets about 5 mm. long.....2..2. 2002000. 2. R. oligostachya. 
|. Reimarochloa brasiliensis (Spreny.). 
Agrostis brasiliensis Spreng. Nov. Prov. Hal. 45. 1819. 
Reimaria brasiliensis Schlecht. Bot. Zeit. 10: 17. 1852. 
Panicum oxyanthum 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’”’ 
@ Rep. Mo. Bot. Gard. 10: pl. 6. 1899. 
bCat. Pl. Cub. 234. 1866. 
¢ American Code, Canon 15 (Bull. Torr. Club 81: 175. 1904); Vienna Code, Art. 45. 
