Chloris alta Presl.; see in Emorys Rep. p. 153 No 2026 Wright; Corolla Spring & meap. Bigelow, Valley of the Tula (a damp form) Schott, Also No 762 Wrights Col. of 1849. { Var aristulata for in Mupfles Rep. should be cancelled as that the arms in all our species are nearly twice the length of the palea. } Chloris alta verticillata Nutt. var B? aristulata Torr, in Popes Report. p. 176. Coroncho Springs Bigelow; Eagle Cap Schott, Rio Coleta Pepe. Huxley. The typical form, which is common in collections made further north, does not occur in any of those of the Boundary. The variety has much shorter & more closely flowered spikes forms lip nearly half the length of the palea. Chloris elegans HBK. l. t. 149; Rth. Emm. App. p. 207 Wright No 2027. Our few specimens of this fine species have better shorter spikes than that figured in HBK, distinguished at sight from either of the above named species by its much longer arms & the copious long white hairs of the margin & tips of the fertile palea