34 PANICACE^. 



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

 no stamens. 



Introduced. North Carolina, Florida, 'I'exas, Mexico. 



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

 (1854). Ischwmum in part. Pectinaria Hack. Engl, and Prantl. 

 Nat. PI. 2, 2 : 20 (1887). Vossia Wall. 



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

 ose rachis of simple spikes, 1 sessile with 1 pei'fect terminal flower 

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

 or with oidy 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 Andrnpnr/on; 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 Ercmnchloa is mostly taken from Ben- 

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

 our siugle introduced species, 



1. E. LEKRSioiDES (Muuro) ILick., D. C. Monog. Phan. : 2G-4 

 (1880). Isi'lKcinuin lee rsiai ties, Munro, Proc. Am. Acad. 4 : 303 

 1804-05). This is not Eremnrhloe S. Wats. 



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

 ptiberuleiit. Leaf-blades flat or involute, hirsute, setaceous, 0-12 

 cm. long. 2-3 mm. wide. Spikes curved (looking much like liou- 

 felona leiiiftsov />.j)uli/iil(trh9/{n). terminal or lateral, 2-5 cm. long. 

 I'edicellate spikelets reduced to a stipe less than 3 mm. long. 

 S'.'ssde spikelets 3.5 mm. long, first glume flattened, ovate, about 

 4 nun. long, 0-nerved. subiioute with two close teetli. margins sup- 

 l)lii'd 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. 



