MANUAL OF THE GRASSES OF THE UNITED STATES 



587 



Tennessee, Arkansas, and Texas; Honduras and the West Indies 

 (fig. 1232). This species is exceedingly variable. Pubescence on foli- 

 age and spikelets varies in a single plant. Rather stout, somewhat 

 paler, seacoast plants, with firmer blades scarcely ciliate, are the form 



Figure 1230.— Distribution of 

 Paspalum pubescens. 



Figure 1229.— Paspalum pubescens. Pani- 

 cle, X 1; two views of spikelet, and floret, 

 X 10. (Hitchcock 298, Ga.) 



Figure 1231.— Paspalum ciliatifolium. 

 Raceme, X l; two views of spikelet, 

 and floret, X 10. (Nash 1426, Fla.) 



described as P. epile. Plants with softly pubescent lower sheaths, 

 and blades but slightly ciliate, are the form described as P. eggertii. 

 The shape of the spikelet varies in a single raceme from elliptic- 

 obovate to suborbicular. The spikelets tend to 

 become rounder at maturity, but both mature and 

 immature are found of both shapes. 



20. Paspalum propinquum Nash. (Fig. 1233.) 

 Resembling P. ciliatifolium, 

 the blades firmer and nar- 

 rower, the spikelets slightly 

 smaller, subacute. 21 — 

 Sandy savannas and sand 

 barrens overlying limestone, 

 peninsular Florida ; West 

 Indies; Vera Cruz to Pan- 



ama. 



21. Paspalum rigidifolium Nash. (Fig. 1234.) 

 Culms erect, rather stiff, purplish, 25 to 75 cm tall; 

 sheaths glabrous or the lower grayish-pubescent; blades firm, linear, 

 mostly 10 to 15 cm long, 2 to 5 mm wide, usually not wider than the 

 summit of the sheath, glabrous or minutely puberulent ; racemes 1 or 2, 



Figure 1232.— Distribution of 

 Paspalum ciliatifolium. 



Figure 1233. 

 propinquum. Two views 

 of spikelet, and floret. 

 X 10. (Type.) 



