MANUAL OF THE GRASSES OF THE UNITED STATES 679 



Carolina, South Carolina, and Flor- 

 ida. 



17, Latifdlia.— Culms rather stout, 



erect or suberect; ligules not 



more than 1 mm. long; blades 



cordate, clasping; spikelets rather 



turgid, 7- to 9-nerved, pubescent. 



Autumnal phase usually rather 



sparingly branching. 

 113. Panicum clandestinum L. 

 (Fig. 1022.) Vernal culms in large 

 dense clumps, sometimes with strong- 

 rhizomes 5 to 10 cm. long, 70 to 150 



„ mi i • • j Figure 1022. — Panicum clandestinum. Two views of 



Cm. tall, SCabrOUS tO papillOSe-niSpid, spikelet, and floret, X 10. (Torrey, N. Y.) 



Figure 1023. — Panicum latifolium. Plant, X 1; two views of spikelet, and floret, X 10. (Schenck, 111.) 



at least below the nodes; sheaths 

 strongly papillose-hispid to nearly 

 glabrous; blades spreading or finally 

 reflexed, 10 to 20 cm. long, 1.2 to 3 

 cm. wide, scabrous on both surfaces, 

 at least toward the end, usually ciliate 

 at base; panicle 8 to 15 cm. long; 

 spikelets 2.7 to 3 mm. long. Autumnal 

 culms erect or leaning, the branches 

 leafy, the swollen bristly sheaths over- 

 lapping and wholly or partly enclos- 

 ing the panicles. % — Moist mostly 

 sandy ground, Nova Scotia, Quebec, 

 and Maine to Kansas, south to north- 

 ern Florida and Texas. 



114. Panicum latifolium L. (Fig. 

 1023.) Vernal culms from a knotted 

 crown; culms 45 to 100 cm. tall, gla- 

 brous or the lower part sparsely pu- 



bescent; sheaths ciliate; blades 8 to 

 18 cm. long, 1.5 to 4 cm. wide, gla- 

 brous; panicle 7 to 15 cm. long; spike- 

 lets 3.4 to 3.7 mm. long. Autumnal 

 culms more or less spreading, branch- 

 ing from the middle nodes, the upper 

 leaves of the branches crowded and 

 spreading, not much reduced. % 

 — Rocky or sandy woods, Maine and 

 Quebec to Minnesota, south to Geor- 

 gia, Kansas and Arkansas. 



115. Panicum boscii Poir. (Fig. 

 1024.) Vernal phase resembling that 

 of P> latifolium; culms 40 to 70 cm. 

 tall, glabrous or minutely puberulent, 

 the nodes retrorsely bearded ; sheaths 

 glabrous or nearly so; blades spread- 

 ing, 7 to 12 cm. long, 1.5 to 3 cm. 

 wide, sparsely ciliate at base, gla- 



