MANUAL OF THE GRASSES OF THE UNITED STATES 



399 



11. Sporobolus interruptus Vasey. Black dropseed. (Fig. 829.) 

 Perennial, densely tufted; culms erect, 30 to 60 cm tall, the leaves 

 crowded at base, about 2 on the culm; sheaths more or less pilose; 



Figure 826.— Sporobolus macrus. Plant, X 1; glumes 

 and floret, X 10. (Chase 4341, Miss.) 



Figure 827. — Sporobolus clan- 

 destinus. Plant, X 1; glumes 

 and floret, X 10. ( C hase 4265, 

 Fla.) 



blades flat or folded, sparsely pilose to glabrous, 1 to 2 mm wide; 

 panicle 10 to 20 cm long, brownish-leaden, the branches distant, 

 finally spreading, naked at base; spikelets about 6 mm long, short- 



55974°— 3£ 



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