370 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
5. Senites mexicana (Kunth). 
Despretzia mexicana Kunth, Rév. Gram. 2: 485. pl. 157. 1831. 
Zeugites mexicana Trin.; Steud. Nom. Bot. ed. 2. 2: 798. 1841. 
Type locality, Mexico, the type specimen collected by Schiede and Deppe, proba- 
bly in Veracruz. 
RanGeE: Highlands of Central Mexico. 
HERBARIUM SPECIMENS : 
San Luts Potost: Las Candas, rich woods, barranca, Pringle 3919. 
Hmatco: Trinidad Iron Works, wet woodlands, Pringle 13252. 
VERACRUZ: Orizaba, Botteri in 1856. Zacuapan, Purpus 6222. 
112. ORTHOCLADA Beauv. Ess. Agrost. 69. pl. 14. /. 9. 1812. 
1. Orthoclada rariflora (Lam.) Beauv. Ess. Agrost. 69. 1812. 
Panicum rariflorum Lam. Encycl. 4: 746. 1798. 
Type locality, ‘‘Cayenne.”’ 
RanGE: Southern Mexico and West Indies to Brazil. 
HERBARIUM SPECIMENS FROM MExico: 
Veracruz: Sanborn, Orcutt 2932. 
Oaxaca: Sierra San Pedro Nolasco, Jurgensen 953. 
TaBasco: San Sebastidn, Rovirosa 420. 
113. STREPTOGYNE Beauv. Ess. Agrost. 80. pl. 16. f. 8. 1812. 
1, Streptogyne crinita Beauv. Ess. Agrost. 80. pl. 16. /. 8. 1812. 
Type locality erroneously given as “ Etats-Unis d’ Amérique, Carolina;’’ other speci- 
mens from ‘‘Guyana” mentioned. 
RancGE: Veracruz to Brazil. 
HERBARIUM SPECIMEN FROM MEXICco: 
VeERacRUz: Sanborn, Orcutt 2933. 
114. UNIOLA L. Sp. Pl. 71. 1753. 
KEY TO THE SPECIES. 
Spikelets not strongly flattened; blades flat....................... 1. U. palmeri. 
Spikelets strongly flattened; blades involute. 
Spikelets 5 mm. wide; panicle dense, erect................... 2. U. pittiert. 
Spikelets 1 cm. wide; panicle loose, nodding.................. 3. U. paniculata. 
1. Uniola palmeri Vasey, Gard. & For. 2: 401. f. 124. 1889. 
Type locality, ‘At the Horseshoe Bend of the Colorado River, thirty-five miles south 
of Lerdo by the river, and twelve to fifteen miles from its mouth,’’ the type speci- 
men collected by Palmer in 1889. 
RanGE: Sands of northern Mexico. 
HERBARIUM SPECIMENS: 
Sonora: Colorado River, below mouth of Hardy River, Mearns 2834. Thirty- 
five miles south of Lerdo, Palmer in 1889. 
Duranco: Torreon, sandy flat along river, Hitchcock 7541. 
Coanuita: Rio Nazas, growing in sand, Palmer 507 in 1898. 
2. Uniola pittieri Hack. Oesterr. Bot. Zeitschr. 52: 309. 1902. 
Type locality, ‘‘Costarica: in ora maritima Pacifica ad Baie de Salinas,” the type 
specimen collected by Pittier. 
RancE: Pacific coast from Lower California to Costa Rica. 
HERBARIUM SPECIMENS FROM MEXIco: 
Lower Cauirornia: Without locality, Dewey in 1874. 
Oaxaca: Puerto de Santa Cruz, Liebmann 539. 
