MANUAL OF THE GRASSES OF THE UNITED STATES 



723 



of fields, southern New Jersey to southern Indiana, southern Missouri, 

 and Oklahoma, south to Florida and Texas (fig. 1612). Erianthus 

 alopecuroides var. HiRstJTus Nash. Sheaths and lower surface of 

 the blades appressed-hirsute. Ql — Florida. 



4. Erianthus brevibarbis Michx. Brown plumegrass. (Fig. 

 1613.) Culms 1 to 2 m tall, glabrous, even on the nodes; sheaths 

 appressed-pilose toward the summit; blades 1 to 1.5 cm wide, pilose 

 on upper surface toward the base; panicle 20 to 40 cm long, brown or 

 purplish, not conspicuously woolly; spikelets 6 to 7 

 mm long, brown, scabrous, the basal hairs shorter 

 than the spikelet; awn about 2 cm long, terete, 

 scabrous, straight or slightly flexuous; rachis joint 

 and pedicel with a few short hairs. 01 — Moist 

 places, Coastal Plain, Delaware to Florida and 

 Louisiana (fig. 1614). 



5. Erianthus giganteus (Walt.) Muhl. Sugar- 

 cane plumegrass. (Fig. 1615.) Culms 1 to 3 m 

 tall, appressed-villous below the panicle, the nodes 

 appressed-hispid, the hairs deciduous; sheaths and 

 blades from nearly glabrous to shaggy appressed- W<gk 

 villous, the blades 8 to 15 mm wide; panicle 10 to f^ 

 40 cm long, oblong or ovoid, tawny to purplish; FlGrRE im ,_ Erianthus 

 spikelets 5 to 7 mm long, sparsely long- villous on brevibarbis, xh. (Hitch- 

 the upper part, shorter than the copious basal 



hairs; awn 2 to 2.5 cm long, terete, straight or slightly flexuous; 

 rachis joint and pedicel long-pilose. % (E. saccharoides Michx.) 

 — Moist soil, Coastal Plain, New York to Florida and Texas, north 

 to Kentucky; Cuba (fig. 1616). A common form with relatively 

 small compact panicles has been segregated as E. compactus Nash; 

 a robust form with long, copiously silky, tawny panicle, as E. tracyi 



Nash; and a form with rather looser panicle, 

 the lower rachis joints longer than the spike- 

 lets, and pubescent foliage was described from 

 Florida as E. laxus Nash. 



Erianthus ravennae (L.) Beauv. Ravenna 

 grass. (Fig. 1617.) Culms stout, as much as 

 4 m tall; panicle as much as 60 cm long, sil- 

 very; spikelets awnless or nearly so. Ql — 

 Cultivated for ornament; hardy as far north 

 as New York City; native of Europe. Established along irrigation 

 ditches near Phoenix, Ariz. 



EULALIA Kunth 



(Pollinia Trin.) 



Spikelets in pairs, alike, perfect on an articulate rachis, one sessile, 

 one pediceled; racemes 2 to several, digitate or approximate. 



Eulaiia viminea (Trin.) Kuntze. Annual ; culms slender, straggling, 

 50 to 100 cm long, freely branching; blades lanceolate, 3 to 8 cm long; 

 racemes 2 to 6, sometimes only one, approximate; spikelets about 5 

 mm long; awns delicate, 5 to 8 mm long or wanting. o — Intro- 

 duced near Richmond, Va., Old Fort, N.C., and Knox County, Term.; 

 tropical Asia. 



Figure 1614.— Distribution of 

 Erianthus brevibarbis. 



