276 



MEMOIRS OF THE NEW YORK BOTANICAL GARDEN [Vol. 9, No. 3 



flexed; second glume as long as the first, strongly keeled, 3-nerved, the median 

 nerve short pubescent-ciliolate toward the tip; sterile lemma thin, 2-keeled, the 

 margins delicately ciliolate; fertile lemma 3-3.7 mm long, thin, bifid, awned 

 from between the lobes; awn 1.5-2 cm long, exserted, once-geniculate, the first 

 segment brown, tightly twisted, the terminal segment pale, antrorsely scabrous; 

 palea about 0.5 mm shorter than the lemma, thin, transparent, 2-keeled, the tip 

 (and sometimes the margins) finely ciliolate; lodicules 2, 0.5-0.7 mm long; 

 stamens 3, the anthers 1.5 mm or more long; ovary developed; pedicel of the 

 pedicellate spikelet shorter than the sessile spikelet, flattened, densely long- 

 pilose on the margins; pedicellate spikelet 2.4-3 mm long, broad; first glume 

 (enclosing the second and sterile lemma) 5-nerved, the median nerve developed. 



TYPE: bunch grass, North Escarpment, along escarpment above Culebra, alt. 

 1400 m, Cerro Duida, Rio Cunucunuma, Amazonas, Venezuela, November 20, 



FIG. 12. Andropogon vetus Sohns. a, pair of spikelets; b, cross section of rachis- 

 joint (black dots represent vascular bundles); c, rachis-joint; d, first glume; e, second 

 glume; /, sterile lemma, palea, and lodicules of upper floret; g, lodicule; h, fertile lemma; 

 i, essential organs; /, palea, base of lemma, lodicules, and caryopsis of upper floret; k, 

 cross section of blade about 5 mm above the base, a-i, k X 8; / X 20. Type. 



