25 



glume strongly gibbous, acute, short-apiculate, transversely undulate-rugose, 

 except at the nearly smooth base and apex, the inclosed palea broadly elliptical- 

 ovate, very strongly convex, transversely striate. 



Type specimen in Gray Herbarium Cambridge, No. 528 (828?), "Herbarium Ber- 

 landierianum Texano-3Iexicanum," no locality or date. 



A very distinct species, readily recognized by its broad-linear, pilose leaves, densely 

 bearded sheath-margins and 

 ligule, long first glume, and 

 strongly convex palea. 



15. CHiETOCHLOA HIS- 

 PID A sp. nov. (Fig. 13.) 



A simple or sparingly branched, 

 erect, somewhat hirsute an- 

 nual, about 6 dm. high, with 

 linear-lanceolate leaves and 

 exserted, cylindrical, spike- 

 like panicles about 6 em. 

 long. Culm slender, com- 

 pressed below, somewhat 

 geniculate, striate, scabrous 

 below the panicle, thinly 

 l^ilose for its whole length 

 with scattered white hairs; 

 nodes bearded with appressed 

 hairs; sheaths compressed, 

 striate, strigose witli rather 

 long white hairs, especially 

 above and on the margins; 

 ligule short, ciliate; leaf- 

 blades 10 to 15 cm. long, 4 to 

 6 mm. wide, tapering to the 

 base, acuminate, scabrous on 

 both sides and margins, 

 papillate-pilose on the nerves 

 on both sides, mid-nerve very 

 prominent on the lower side, 

 smooth. Panicle densely 

 flowered, about 7 mm. in 

 diameter exclusive of the 

 setee; rachis angular, pilose; 

 branches short, contiguous, 

 I 1 to 3 flowered; setse 1 or 2, 

 green, spreading, 8 to 12 mm. long, antrorsely scabrous above, nearly smooth 

 at the base; first glume nearly one-half as long as the spikelet, broadly ovate- 

 cordate, acute, apiculate, 3-nerved, inclosing the base of the spikelet; second 

 glume broadly-ovate, obtuse, about four-fifths as long as the spikelet, short- 

 apiculate, 7-ner\'ed, the mid-nerve excurrent, the lateral ones vanishing; third 

 glume equaling the flowering glume, sulcate, 5-nerved, subtending a lanceo- 

 late, hyaline palea; flowering glume elliptical-ovate, acute, strongly gibbous, 

 transversely undulate-rugose, the inclosed palea convex at the base, plane 

 above. 



In sandy pine woods, Cuba. Type specimen in the Gray Herbarium, Cambridge, 

 collected by C. Wright in January, 1865; no number. 



Eelated to C. corrugata (Ell.) Scribn. , but readily distinguished by its more simple habit, 



Fig. iZ.—Chcetochloa hispida: a, spikelet showing seta; b, c, 

 views of the spikelet; d, tiowering glume, dor.sal view. 



