MANUAL OF THE GRASSES OF THE UNITED STATES 



633 



glabrous; spikelets 1.3 to 1.4 mm long. Autumnal culms erect, with 

 fascicled branchlets from all the nodes; leaves and panicles not greatly 

 reduced. 21 —Sandy or sterile woods and clearings, Nova Scotia 

 to Wisconsin, south to Alabama (fig. 1346). 



44. Panicum albemarlense Ashe. (Fig. 1347.) Vernal phase 

 olivaceous, grayish- villous throughout; culms 25 to 45 cm tall, at 

 first erect, soon geniculate and spreading; blades 3 to 6 mm wide, the 

 upper surface puberulent as well as long- villous ; panicle 3 to 5 cm 

 long, the axis puberulent; spikelets 1.4 mm long, pilose. Autumnal 

 culms widely decumbent, spreading or ascending, freely branching 

 at all but the uppermost nodes, the branches narrowly ascend- 



Figure 1344.— Distribution of 

 Panicum icrightianum. 



Figure 1345.— Panicum meridi- 

 onale. Two views of spikelet, 

 and floret, X 10. (Type.) 



Figure 1346.— Distribution of 

 Panicum meridionale. 



ing. % — Low sandy woods or open ground, Coastal Plain, Massa- 

 chusetts to North Carolina; Indiana to Wisconsin; Tennessee (fig. 

 1348). 



45. Panicum implicatum Scribn. (Fig. 1349.) Vernal culms 

 slender, 20 to 55 cm tall, erect or ascending, papillose-pilose with 

 spreading hairs; sheaths papillose-pilose; ligule 4 to 5 mm long; blades 

 more or less involute-acuminate, the upper surface pilose with erect 

 hairs 3 to 4 mm long, appressed-pubescent beneath ; panicle 3 to 6 cm 

 long, the axis long-pilose, the branches flexuous, in typical specimens 

 tangled or implicate; spikelets 1.5 mm long, papillose-pilose. Autum- 



Figure 1347.— Panicum albemar- 

 lense. Two views of spikelet, and 

 floret, X 10. (Type.) 



Figure 1348.— Distribution of 

 Panicum albemarlense. 



Figure 1349.— Panicum impli- 

 catum. Two views of spike- 

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



nal culms erect or spreading, loosely branching from the lower and 

 middle nodes. % — Wet meadows, bogs, and sandy soil, cedar and 

 hemlock sw^amps, Newfoundland to Wisconsin, south to Delaware 

 and Missouri (fig. 1350). 



46. Panicum huachucae Ashe. (Fig. 1351.) Vernal phase light 

 olivaceous, often purplish, harsh to the touch from copious spreading 

 papillose pubescence; culms usually stiffly upright, 20 to 60 cm tall, 

 the nodes bearded with spreading hairs; ligule 3 to 4 mm long; blades 

 firm, stiffly erect or ascending, 4 to 8 cm long, 6 to 8 mm wide, the 

 upper surface copiously short-pilose, the lower densely pubescent; 

 panicle 4 to 6 cm long, the axis and often the branches pilose ; spikelets 

 1.6 to 1.8 mm long, obovate, papillose-pubescent. Autumnal culms 

 stiffly erect or ascending, the branches fascicled, the crowded blades 

 ascending, 2 to 3 cm long, much exceeding the panicles. 91 — 



