DESCRIPTION OF PLATES. 



Plate I. Fig. 1. — Lepfochloa mucronata Knnth. Athens, 111. The visual form. 

 Fig. 2. — Leptochloa viscida Beal. Mexican Botindary Sur^^ey, 

 Mearns No. 793. 

 II. Fig. 1. — Leptochloa domingensis Trin. Florida, Simpson. Fig. 2. — 

 Leptochloa domingensifi Trin. Hidalgo, Tex.. Nealley. 



III. Fig. 1. — Leptochloa scabra Nees. Louisiana. Langlois. This is the 



specimen upon which was based Leptochloa Langloisii Vasey. Fig. 

 2. — Leptochloa nealley i Vasey. Texas, Nealley. Type specimen. 



IV. Fig. 1. — Leptochloa fascicular is. The prostrate form that has been 



named Diplachne procmnbens Nash. Denver, Colo., Letterman. 

 Fig. 2. — Leptochloa fascicidaris. The western form which has been 

 \VA\ne(\. Diplachne tracyiYdiBeY. Reno. Nev.. Tracy, 216. Type speci- 

 men of D. tracyi Vasey. 



V. Fig. 1. — Leptochloa fascicidaris Gray. Sheffield, Mo. Bush No. 804. 

 The ordinary form. Fig. 2. — Leptochloa imbricata Thurb. Culti- 

 vated in Grass Garden, U. S. Department of Agriculture. 



VI. Lepjtochloa floribunda Doell. The cotype of Diplachne halei Nash. 

 Louisiana, Hale. A fragmentary specimen, but interesting because 

 of its history. 



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