. 
190 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
Lemma awned. 
Lemma indurated, convolute, awn 3-fid (lateral awns minute or 
wanting in A. scabra) ..................51. Aristida (p. 235). 
Lemmas not indurated, tapering into a capillary awn. 
52. Muhlenbergia (p. 237). 
Spikelets 2 to many-flowered. (FEsTUCEAE.) 
Lemmas cleft above into a pappus-like crown of bristles. 
61. Pappophorum (p. 242). 
Lemmas entire. 
Lemmas clothed with long silky hairs, tall, reed-like, dicecious 
QTASSCS 2.2... eee eee 62. Gynerium (p. 242). 
Lemmas not clothed with silky hairs. 
. Lemmas3-nerved, not atallindurated .63. Eragrostis (p.242). 
Lemmas many-nerved, somewhat indurated and rigid. 
Sterile lemmas 1 to 3 above the glumes; plants not 
dicecious ...........2.2.22.2.02. 64. Uniola (p. 245). 
Sterile lemmas above glumes none; plants dicecious. 
65. Distichlis (p. 245). 
CATALOGUE OF GENERA AND SPECIES. 
1. COITX L. Sp. Pl. 972. 1753. 
1. Coix lachryma-jobi L. Sp. Pl. 972. 1753. 
Pinar del Rio, Baker & Abarca, HC 3686; El Guama, Palmer & Riley 142. 
This is originally from tropical Asia, but is now cultivated for ornament in the 
warmer regions of both hemispheres, whence it has escaped. 
2. IMPERATA Ciril. Pl. Rar. Ic. 2: 26. pl. 11. 1792. 
1. Imperata brasiliensis Trin. Mem. Acad. Petersb. VI. 2: 331. 1833. 
La Magdalena, Baker HC 4946; Madruga, Britton 630; without locality, Wright 
3486; Cienfuegos, Combs 701, in Gray Herbarium; Isle of Pines, Curtiss in 1904 in 
Herb. N. Y. Bot. Gard.; Pinar del Rio, Shafer 310 in Herb. N. Y. Bot. Gard. 
The type in the Trinius Herbarium is from Serra da Lapa, Brazil, though Trinius 
in the original publication cites merely ‘“‘V. spp. Brazil.’ J. caudata Trin., as 
shown by the type in the Trinius Herbarium, differs in having smaller spikelets 
(about 2.5 mm. long), longer and more copious hairs, and an elongated inflores- 
cence. The spikelets of J. brasiliensis are 4 mm. long. Wright’s specimen (3486) 
is the latter species as shown by the specimen in the herbarium of Grisebach and 
in that of Sauvalle. This is referred to I. caudata by Grisebach@ and Sauvalle.b 
3. SACCHARUM L. Sp. Pl. 54. 1753. 
1. Saccharum officinarum L. Sp. Pl. 54. 1753. 
Cienfuegos, Pringle 17; Guanajay, Curtiss 635. 
This species (sugar cane) is grown in all tropical countries, and the above speci- 
mens are from cultivated plants. 
4. ERIANTHUS Michx. FI. Bor. Amer. 1: 54. 1803. 
1. Erianthus saccharoides Michx. Fl. Bor. Amer. 1: 55. 1803. 
Laguna San Mateo, Pinar del Rio, Wright 3903. 
In Sauvalle’s Flora Cubana this is called Andropogon alopecuroides L. The latter 
species, however, has a twisted awn, while in EF. saccharoides the awn is straight or 
only slightly bent, not twisted. 
a4Cat. Pl. Cub. 236. 1866. 
6 Anal. Acad. Cienc. Habana 8: 288, 1871; Fl. Cub. 202. 
