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



branchlets from the nodes, the scarce- 

 ly reduced flat blades spreading. % 

 — Moist places, especially sphagnum 

 bogs, Florida to Mississippi. 



Figure 992. — Patiicum curtifolium. Two views of 

 spikelet, and floret, X 10. (Type.) 



83. Panicum curtifolium Nash. 

 (Fig. 992.) Vernal culms 10 to 30 

 cm. tall, slender, weak, angled, erect 

 or spreading, sheaths striate-angled, 

 sparsely pilose; ligule about 1 mm. 

 long; blades spreading or renexed, 1.5 

 to 3 cm. long, 2 to 5 mm. wide, thin, 

 soft, sparsely pilose on both surfaces 

 or nearly glabrous above; panicle 2 

 to 3 cm. long; spikelets 1.4 mm. 

 long, glabrous or minutely pubescent. 

 Autumnal culms weakly spreading, 

 branching from the middle nodes, the 

 ultimate branches in small fascicles 

 toward the summit of the culm. % 

 — Boggy soil and shady moist places, 

 sometimes forming a rather dense 

 carpet, South Carolina to Tennessee, 

 south to Florida and Texas. 



Figure 993. — Panicum chamaelonche. Two views of 

 spikelet, and floret, X 10. (Type.) 



84. Panicum chamaelonche Trin. 



(Fig. 993.) Vernal culms densely 

 tufted, 10 to 20 cm. tall, ascending; 

 blades firm, ascending or spreading, 

 1.5 to 4 cm. long, 2 to 3 mm. wide; 

 panicle 2.5 to 5 cm. long; spikelets 

 1.1 to 1.2 mm. long, glabrous. Au- 

 tumnal culms freely branching from 

 the base and lower nodes, forming 

 dense cushions as much as 50 cm. 

 across. % — Open sandy soil in 

 low pineland, North Carolina to 

 Florida and Louisiana; Isla de Pinos. 



85. Panicum glabrifdlium Nash. 

 (Fig. 994.) Vernal phase similar to 

 that of P. chamaelonche; culms stout- 

 er, 15 to 50 cm. tall, mostly erect; 

 blades erect, 4 to 12 cm. long, 2 to 

 4 mm. wide, usually involute; panicle 

 4 to 9 cm. long; spikelets 1.2 to 1.4 

 mm. long, glabrous. Autumnal culms 

 wiry, elongate, spreading, freely 

 branching from the middle and upper 

 nodes, the blades long and narrow. 

 21 — Low sandy woods, peninsular 

 Florida. Closely allied to P. chamae- 

 lonche, but taller and with different 

 autumnal phase. 



Figure 994. — Panicum Figure 995. — Panicum 



glabrifdlium. Two breve. Two views of 



views of spikelet, and spikelet, and floret, X 



floret, X 10. (Type.) 10. (Type.) 



86. Panicum breve Hitchc. and 

 Chase. (Fig. 995.) Vernal phase pur- 

 plish; culms 5 to 15 cm. tall, erect, 

 stiff and wiry; sheaths crowded at 

 the base; blades erect, 3 to 6 cm. 

 long, strongly involute, with a few 

 stiff hairs at the base; panicle 1.5 to 

 4 cm. long; spikelets 1.3 to 1.4 mm. 

 long, puberulent. Autumnal phase 

 erect, branching from the middle 

 nodes, the fascicled branches strict. 

 % — Low pine woods and ham- 

 mocks, east coast of southern Florida. 



12. Lancearia. — Olive green, often 

 purplish; vernal culms usually 

 wiry; ligules nearly obsolete; 

 blades usually ciliate toward the 

 base; spikelets asymmetrically 

 pyriform, strongly 7- to 9-nerved. 

 Autumnal culms spreading, free- 

 ly branching. 



87. Panicum portoricense Desv. ex 

 Hamilt. (Fig. 996.) Vernal culms 15 

 to 30 cm. tall, slender, crisp-puberu- 

 lent to nearly glabrous; sheaths gla- 

 brous or crisp-puberulent ; blades 

 firm, 2 to 5 cm. long, 3 to 6 mm. wide, 

 glabrous to puberulent; panicle 2 to 



