34 PANICACE^. 



specimens from Arizona, there are three or four empty glumes and 

 no stamens. 



Introduced. North Carolina, Florida, Texas, Mexico. 



11. (91). Eremochloa Buese, Miq. PI. Jungh. 1 : 357 

 (ISol). Ischmmum in part. Pectinaria Hack. Engl, and Prantl. 

 Nat. PI. 2, 3 : 26 (1887). Vossia Wall. 



Spikelets in pairs in the alternate notches of the articulate flexu- 

 ose rachis of simple spikes, 1 sessile with 1 perfect terminal flower 

 and a staminate 1 below it, the outer pedicellate and either similar 

 or with only 1 perfect or 1 or 2 staminate flowers or reduced to 2 

 empty glumes, the spikes either solitary or 2 or more, sessile or 

 nearly so on the end of the common peduncle. The outer glume 

 of the sessile spikelet the largest, awnless, truncate or 2-toothed 

 at the top, second glume keeled and sometimes produced into a 

 straight awn. third glume rather smaller, thin, enclosing a palea 

 and 3 stamens, terminal glume a twisted and bent awn, attenuate 

 or hyaline and bifid at the base as in Andropogon; palea small and 

 thin or 0. Styles distinct. Grain enclosed in the glumes, but not 

 adherent. 



About 30 species, mostly Asiatic. 



The above in reference to Eremochloa is mostly taken from Ben- 

 tham's Flora Australiensis. It will scarcely lead one to recognize 

 our single introduced species. 



1. E. LEERSioiDES (Muuro) Hack., D. C. Monog. Phan. 6 : 264 

 (1889). Ischcemimi leersioides, Munro, Proc. Am. Acad. 4 : 363 

 1864-65). This is not Eremochloe S. Wats. 



Culms slender, sparingly branched, 20-40 cm. high, nodes 

 puberulent. Leaf-blades flat or involute, hirsute, setaceous, 6-12 

 cm. long, 2-3 mm. wide. Spikes curved (looking much like Bo^i- 

 teloua tenuis or B. polystachyia), terminal or lateral, 2-5 cm. long. 

 Pedicellate spikelets reduced to a stipe less than 3 mm. long. 

 Sessile spikelets 3.5 mm. long, first glume flattened, ovate, about 

 4 mm. long, 6-nerved, subacute with two close teeth, margins sup- 

 plied with short spiny hairs 2-3 mm. long, second glume elliptical, 

 acute, 4 mm. long. 3-nerved. third glume and palea 3 mm. long, 

 hyaline, terminal glume awnless. 



