MANUAL OF THE GRASSES OF THE UNITED STATES 



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a whole; culms 30 to 60 cm. tall; 

 blades erect or ascending, the short 

 basal blades few or wanting; panicle 

 5 to 9 cm. long, narrow, the flexuous 

 branches narrowly ascending, the 

 branchlets appressed, the short-pedi- 

 celed spikelets more or less secund 

 along the branches; spikelets 2 mm. 

 long, finely papillose-pubescent. Au- 

 tumnal culms erect, about as tall as 

 the vernal phase; blades involute. 

 % — Savannas and open ground, 

 southern Florida; Mississippi (Horn 

 Island); Texas; British Honduras; 

 Cuba. 



4. Bicknelliana. — In small tufts, erect 

 or ascending; sheaths glabrous; 

 ligules nearly obsolete; panicles 

 few-flowered; spikelets long-pedi- 



celed, 7-nerved. Autumnal culms 

 sparingly branching from upper 

 or middle nodes, the blades not 

 much reduced. Intermediate in 

 habit between Depauperata and 

 Dichotoma. 

 24. Panicum bicknellii Nash. (Fig. 

 933.) Vernal phase bluish green; 

 culms 30 to 50 cm. tall; nodes sparsely 

 bearded or glabrous; blades stiffly as- 

 cending, 8 to 15 cm. long, 3 to 8 mm. 

 wide, the uppermost usually the long- 

 est, narrowed toward the usually cili- 

 ate base; panicle 5 to 8 cm. long, the 

 branches ascending; spikelets 2.3 to 

 2.8 mm. long, sparsely pubescent or 

 rarely glabrous. Autumnal culms 

 erect, forming a loose bushy tuft, the 

 stiffly ascending blades not much re- 

 duced, overtopping the narrow few- 

 flowered panicles. % — Dry sterile 

 or rocky woods, Connecticut and 

 Michigan to Georgia and Arkansas. 



Figure 933. — Panicum bicknellii. Plant, X 1; two 

 views of spikelet, and floret, X 10. (Porter, Pa.) 



Figure 934. — Panicum calliphyllum. Two views of 

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



25. Panicum calliphyllum Ashe. 

 (Fig. 934.) Vernal phase yellowish 

 green; culms 35 to 50 cm. tall; nodes 

 sparsely villous; blades ascending, 8 

 to 12 cm. long, 9 to 12 mm. wide, 

 ciliate at the rounded base; panicle 7 

 to 9 cm. long, with a few ascending 

 branches; spikelets mostly 3 mm. 

 long, elliptic, sparsely pubescent. Au- 

 tumnal culms sparingly branching 

 from the middle nodes, the branches 

 about as long as the internodes, erect. 

 % — Woods, rare and local, Ontario, 

 Massachusetts, New York, Ohio, 

 Michigan, and Missouri. 



5. Nudicaulia. — A single rare and 

 local species. 



