MANUAL OF THE GRASSES OF THE UNITED STATES 



763 



sessile spikelet 3.5 to 5 mm long, the first glume strongly and irregu- 

 larly transversely ridged, the keels narrowly winged toward the 

 summit. 01 — Wet pine woods, Coastal Plain, southern New Jersey 

 to Florida and Texas (fig. 1687). 



Figure 1684.— Distribution of 

 Manisuris cylindrica. 



Figure 1685.— Distribution of 

 Manisuris tessellata. 



5. Manisuris tuberculosa Nash. (Fig. 1688.) Differing from 

 M. rugosa chiefly in the straight rachis joints, not contracted in the 

 middle, and in the smooth to obscurely ridged or tuberculate first 

 glume of the sessile spikelet, varying in a single raceme. 01 — 

 Moist ground along lakes, central peninsular Florida. Apparently 

 rare. 



Eremochloa ophiuroides (Munro) Hack. 

 Centipede grass. Low perennial, creeping 

 by thick short-noded leafy stolons; racemes 

 spikelike, smooth, subcylindric, terminal and 

 axillary on slender peduncles, 2 to 6 cm long; 

 rachis flat, not thickened as in Manisuris, the 

 first glume of sessile spikelet winged at sum- 

 mit. Oi — Southeastern Asia ; has been tested 

 at southern experiment stations and has been 

 recommended as a lawngrass for the South. 



Figure 1686.— 

 M anisur is 

 rugosa, X 1. 

 (Curtiss 3622, 

 Fla.) 



Figure 1687.— Distribution of 

 Manisuris rugosa. 



Figure 1688.— 

 Manisu ris 

 tuberculosa, 

 X 1. (Nash 

 1074, Fla.) 



Eremochloa ciliaris (L.) Merr. Found near a Chinese warehouse in San 

 Francisco. Southeastern Asia. Mentioned in the Botany of California (2: 262. 

 1880) under Ischaemum leersioides Munro. Not since collected in the United 

 States. 



155. HACKEL0CHLOA Kuntze 



{Rytilix Raf.) 



Spikelets awnless, in pairs, the rachis joint and pedicel grown 

 together, the two clasped between the edges of the globose alveolate 

 first glume of the sessile spikelet; pedicellate spikelet conspicuous, 

 staminate. Freely branching annual with flat blades, the numerous 

 racemes solitary and more or less enclosed in the spathes, these 

 usually fascicled in the axils of the leaves. Type species, Hackelochloa 

 gmnularis. Named for Eduard Hackel and Greek chloa, grass. 



1. Hackelochloa granulans (L.) Kuntze. (Fig. 1689.) Culms 30 

 to 100 cm tall; sheaths papillose-hispid; blades flat, 5 to 15 cm long, 



