﻿436 Nash : The Genera Chloris qxa 



pilose at the base which is naked or with a few scattered spikelets : 

 spikelets, exclusive of the awns, about 4 mm. long : scales 4 ; 

 outer empty scales often purplish, acuminate, the first scale three 

 fourths as long as the second which is about 3.5 mm. long ; third 

 scale, exclusive of the awn, 4 mm. long, in side view equilateral 

 and .8 mm. wide, acute, the internerves rough, especially above 

 the middle, the callus pilose, the lateral nerves pilose above the 

 middle, the hairs increasing in length toward the apex, the mid- 

 nerve hispidulous above the middle, the awn inserted just below 



6-9 



fourth 



scale 2-2.5 mr n. long, in side view elliptic and about .5 mm. wide, 

 the apex acute, the lateral nerves glabrous, the midnerve hispidu- 



th 



mm. long. 



Texas. Collected by both G. C. Nealley and F. VV. Thurow, 

 and apparently only by them. The larger third and fourth scales, 

 together with the glabrous midnerve of the former and the dif- 

 ferent shape of the latter, readily separate this from C. verticillata 

 Nutt. The collection by Mr. Nealley is taken as the type. 



■ 



2. Chloris tenuispica sp. nov. 



Culms 2-4 dm. tall, erect, tufted, compressed, simple or some- 

 what branched at the base, the innovations about one half as long 

 as the culms ; nodes 3 or 4 : culm leaves 3 or 4 ; sheaths overlap- 

 ping, compressed, keeled ; ligule a scarious ciliolate ring about 1 

 mm. wide; blades 4-15 cm. long, 2-3 mm. wide, linear, abruptly 

 acute, smooth beneath and often with a few scattered hairs arising 

 from papillae, rough above and on the margins : inflorescence with 

 the axis 2 cm. or less long, angled, the angles hispidulous ; spikes 

 10-12, 6-10 cm. long, finally widely spreading, in about two 

 whorls, very slender, pilose at the base, which is naked or with 

 few scattered spikelets : spikelets, exclusive of the awns, about 3 

 mm. long ; scales usually 4, sometimes 5, the outer empty one- 

 narrow, acuminate, awn-pointed, the first scale about three fourths 

 as long as the second, which is 3-3.5 mm. long; third scale with 

 the callus pilose, about 3 mm. long, in side view elliptic, equilateral 

 and .7 mm. wide, the lateral nerves pilose their entire length, the 

 midnerve to the base of the awn, which is inserted just below the 

 acute apex and is 4-6 mm. long, the palet slightly shorter than 

 the scale ; fourth scale sparingly pilose on the midnerve only, oc- 

 casionally enclosing a perfect flower (and in this case the scale 

 a little larger than usual), similar to the third, though smallei, 

 usually empty, somewhat inequilateral in side view, the mar^n 



