55 



668. Panicum stenodes (hi.seb. 



669. Panicum siib.spicatuin Vasey. Hidalgo (Hidalgo county). 



670. Panicvim Texanum iiuckley. 



671. Panicum viigatum L. Ballingcr (Runnels county). 



672. Panicum viscidum FAl. 



673. Oplismenus setarius K. & S. 



674. Setaria caudata R. & S. Pena (Duval cotiuty). 



675. Setaiia caudata R. «.V. S., var. paiiciseta Vasey. Peua (Dnval county) 



676. Setaria glauca 1'. lir., vav. flava Va.sey. 



677. Setaria glauca P. Br., var. laevigata Chapiii. 



678. Setaria imberbis R. *.V S. 



679. Setaria setosa I5e:iuv. 



680. Ce:ichrus echinatus L. 



681. Cenchrus myosuroides TIBK. Chenato Mountains (Presidio county). 



682. Cenchrus tribuloides L. 



683. Stenotaphrum Americanum Sclikr. . 



684. Zizania aquatica L. 



685. Zizania miliacea Michx. (Zizmiiopsis Doell.). 



686. Leersia hexandra Swartz. 



687. Leersia monandra Kwartz. 



688. Leersia oryzoides Swartz. 



689. Leersia Virginica Willd. 



690. Phalaris intermedia liosc. 



691. Phalaris intermedia IJosc., var. angusta Chapm. 



692. Aristida Arizonica Vasey. Santa Anna (Coleman county). 



693. Aristida desmantha Tr. & Rupt. 



694. Aristida dichotoma L. 



695. Aristida dispersa Trin. Chonato Mountains (Presidio county). 

 '696. Aristida gracilis Ell. 



697. Aristida Havardii V.aaey. 



698. Aristida Humboldtiaua Trin. 



699. Ari.stida oligantha Miclix. 



700. Aristida palustris Vasey. 



701. Aristida purpurascens Poir., var. minor Vasey. 



702. Aristida purpurea Xutt. Point Isabel. 



703. Aristida purpurea Nutt. , v.ir. Berlandieri Trin, 



704. Aristida purpurea Nutt., var. Hookeri Trin. 



705. Aristida purpurea Nutt., var. micrantha Vasey. Peua (Duval county). 



706. Aristida Reverchoni Vasey. 



707. Aristida Schiediana Trin. Limpia canon (Presidio county). 



708. Aristida Schiediana Trin., var. minor Vasey. Linipia canou (Presidio 



eoMiity). 



709. Aristida stricta, var. Nealleyi Vasey, n. var. Culms cespitoso, slender, erect, 



wiry, unLranched, 45''"' high: loaves erecf, setaceous, T) to 15™' long, pun- 

 gendy pointed : panicle spike-like, very narrow, 10 to 1'/'" long, two or three 

 sptkolcts at each joint, one sessile, one or two short-pedicelled, uppre.ssed: 

 Bj)ikolets about 8"'"^ long: lower empty glumes rather sliorter than upper: 

 ujtper one nearly equal to the lloweriug glume or to the furcation: llowering 

 glume about 8""" long beside the awns, scabrous, the short stipe pubescent: 

 awns nearly equal, 10 to lii""" long.— CJienattJ Mountains (Presidio county). 

 Shorter and less rigid than the type. 



710. Stipa flexuosa Vasey. Clienate Mountains (Presidio county). 



711. Stipa pennata, var. Neo-Mexicana Thurbor, 



712. Stipa setigera Preal. Point Isabel. 



713. Stipa tenuissima Trin. 



