147 



panicle and their 3-awned flowering-glumes; but the panicle is com- 

 posed of simple crowded verticillate spikes, and the spikelets, 

 sessile in two rows on the rachis, with one to three empty awned 

 glumes above the flowering one, are quite those of Chloris. The 

 tAvo Southern species have long been indicated and named in herbaria 

 as constituting an independent genus (the one by J. Gay, the other 

 by Munro); but never having been published, we must adopt Four- 

 nier's generic name for the whole/' We are in doubt as to the 

 specific name applied to this grass by Fournier, and, in the uncer- 

 tainty, Blanchardiajia is retained. 



55. Bouteloiia hirsuta^ Lagasca Gray, Man., 5th ed., p. 621; 

 Chondrosium /iirfumy HBK,, Nov. Gen. i., 176. t. 59. 



Mesas, near Camp Lowell. 



56. Boiitelotia polystachya^ Torr., van 7najor^ Vasey, in Bot. 

 Wheeler Exped., p. 287. 



Mesas; near Camp Lowell. J 



ri"i 



Dine 



This is a robust form, with leafy, branching culms 2 ft. long, 

 bearing numerous spikes, which are nearly an inch in length. It 

 differs much in habit from No. 403 and No, 1,356 of E. Palmer's 

 collections of 1875 and 1880, which resemble the figure of B. poly- 

 stachya, Torr., in Pac. R. R. Survey, v., pi. 10. The minute charac- 

 ters of the spikelets, however, differ so little that there appears to be 

 no reason for regarding this grass other than a large form or variety 



of that species. 



57.* Bouteloua Humboldtiana, Griseb , PI. Wright,, 532; Eutriana 

 iuncifolia, Kth., Gram., i., 95; B. juncifolia^ Vasey, in Bot. Wheeler 

 Exped., p. 287; non Lagasca. 



Mesas, near Camp Lowell. July. 



58.* Bouteloua aristzdoldes, Thurber, Bot. Cah, ii., p. 291; 

 bra aristidoides^ HBK., Nov. Gen. PL i., 171. t. 695. 



Mesas, near Camp Lowell. June. 



This is the grass doubtfully referred to B. gracilis^ Hook, f., in 

 Bot. Wheeler Exped., p. 287, and it is distributed in Pringle's sets 



under this name* 



59.* Leptochloa mucronata^ Kth., var. pulchella, n, var. — Culms 



slender, tufted, erect, 5-10 in. high (including panicle); leaves -^-i 



in. long and a line wide; panicle erect, spikes -^i in. long. 



Santa Cruz Valley, near Tucson. July. 



This little grass is so distinct in appearance from the ordinary 

 forms of the species, with their stout culms, elongated and usually 

 wide (J in.) leaves, and spikes from 2-5 in. long, that it is ventured 

 • as a variety. I should be more inclined to think that the special 

 characters of the plant resulted from peculiarities of climate and 

 soil had I not the ordinary form of the species from the same region. 



()Q. Pappophorum boreale, Ledeb.j Flor. Ross., p. 404; P.phlc- 

 aides, Turcz. It is 947 of Parry and Palmer's coll., 1878; 1,361 of 

 E. Palmer, 1880, and 2,029 of Wright's N. Mex. coll., 185 1-2. 



Mention is made of this grass by Dr. Torrey in the Pac. R. R. 

 Rept., Vol. iv., where he states that it agrees so well with authentic 

 specimens of j9. ////^'^/V/^i- received from Fischer that he can hardly 



regard it as even a variety. 



