424 MISC. PUBLICATION 200, U. S. DEPT. OF AGRICULTURE 



prairies, southern Texas and eastern 

 Mexico; West Indies to Brazil. 

 19. Sporobolus pyramidatus (Lam.) 



Hitchc. (Fig. 608.) Perennial, in 

 spreading or prostrate tufts; culms 

 10 to 40 cm. tall; leaves crowded at 

 the base, the sheaths pilose at the 

 throat; blades flat, mostly less than 

 10 cm. long, 2 to 4 mm. wide, sparsely 

 long-ciliate toward the base; panicle 

 pale, pyramidal, 3 to 7 cm. long, 

 rarely longer, the branches spreading, 

 somewhat viscid, 1 to 3 cm. long, 

 naked below, closely flowered above, 

 the lowermost in a distinct whorl; 

 spikelets a little more than 1 mm. 



Figure 604. — Sporobolus teretifolius. Plant, X 1; 

 glumes and floret, X 10. (Harper 677, Ga.) 



sembling S. junceus; blades flat or 

 folded, 1 to 3 mm. wide; panicle 10 

 to 15 cm. long, more contracted than 

 in S. junceus, the shorter branches 

 numerous in the whorls, ascending 

 or appressed, floriferous nearly to 

 the base; spikelets about as in S. jun- 

 ceus, greenish purple. 21 — Sandy 



Figure 605. — Sporobolus floridanus. X 10. (Curtiss 

 4054, Fla.) 



Figure 606. — Sporobolus junceus. Panicle, X 1; 

 glumes and floret, X 10. (Curtiss 4056, Fla.) 



