60 



852. Melica diffusa Pnrsh. * 



853. Uuiola gracilis Michx. 



854. Uiiiola latifolia Michx. 



855. Uniola paniculata L. Toint Isabel. 



856. Distichlis maritima Kaf. Clienate Mouutaiiis (Presidio county). 



857. Poa Bigelovii Vasey & Scribuer. 



858. Poa flexuosa Mubl. 



859. Poa Texana Vasey, n. sp. Diuicions (?) : ihizoinc stent, throwing out ioug 



stoloius wliich take root at the joints, anil from which the leafy culms arise 

 to the height of 15 to 40"" : lower sheaths loose, as long as the interiiodes or 

 longer; blade 7.ri to 15"" long: panicle narrow, 2.5 to 7.5'""' long, the nppcr 

 jiart of a few simple sessile spikelets, the lower part with a few few-tlowered 

 short appre.'iistid branches : spikolets large (10 to lli"'"*), sev<in to nine-llowerod, 

 compressed, smooth : empty glume, ovate, obtuse : flowering glumes oblong- 

 ovate, tiirec-nerved, 4 to 6""" long, smooth except on the keel. — The specimens 

 are all male. 



860. Glyceria fluitans K. Br. 



861. Glyceria nervata Triu. 



862. Festuca nutans Willd. 



863. Festuca oviua L. 



864. Festuca soiurea Nutt. 



865. Festuca tenella Willd. 



866. Bronius ciliatus L. Chenate Mountains (Presidio county). 



867. Bromus Kalraii Gray. 



868. Bronius secalinus L. Introduced. 



869. Bromus unioloides Willd. 



870. Loliuni perenne L. Introduced. 



871. Agropyrum glaucum li. & S. 



872. Hordeum jubatum L. 



873. Hordeum maritimum With. Introduced. 



874. Hordeum pratense llnds. 



875. Hordeum pusillum Xutt. 



876. Elymus Canadensis L. 



877. Elymus Canadensis L., var. glabriflorus Vasey. 



878. Elymus Canadensis L., var. minor Vasey. Santa Anna (Coleman county). 



879. Elymus Sitanion SchuUz. Chenate Mountains (Presidio county). 



880. Elymus striatus Willd. 1 



881. Elymus Virgimcus L, 



882. Elymus Virginicus L., var. minor Vasey. 



883. Aaprella hystrix Willd. 



884. Juniperus occidentalis Hook. Chisos Momitains (Foley county). 



885. Juniperus pachyphloea Torr. Chisos Mountains (Foley county). It is almost 



imj)ossible to distinguish this species from J. Mexicana, and it is very prob- 

 able that the two should be merged, representing a type which extends over 

 the North Mexican plateau, and into the high lands of Arizona, New Mexico, 

 and western Texas. 



The following species were determined by Henry E. Seaton: 



886. Selaginella cuspidata Link. Chenate Mountains (Presidio county). 



887. Selaginella lepidophylla Spring. Chenate Mountains (Presidio county). 



888. Selaginella rupestris Spring. Chenate Mountains (Presidio county). 



889. Gymnogramme hispida Mutt. Chenate Mountains (Presidio county). 



890. Gymnogramme triangularis Kaulf. Chenate Mountains (Presidio county). 



891. ITotholaena ferruginea Hook. Limpia canon (Presidio county). 



892. Notholaena Grayi Dav, Chenate Mountains and Limpia caliou (Presidio 



county). 



