258 NORTH AMERICAN FLORA [VoujmK 17 



134. Panicum albemarlense Ashe, Jour. Elisha Mitchell Soc. 16: 84. 



1900. 



Panicum velutinum Bosc; Spreng. Syst. 1: 315, as synonym. 1825. Not P. velutinum G. Meyer, 

 1818. 



Vernal phase olivaceous; culms cespitose, 25-45 cm. high, slender, at first erect or as- 

 cending, soon becoming geniculate at the lower nodes and more or less spreading; culms, leaf- 

 sheaths, and blades grayish- villous, the blades 4.5-7 cm. long, 3-6 mm. wide, ascending, the 

 upper surface puberulent as well as long- villous ; panicles 3-5 cm. long, about as wide, more 



i 



densely flowered than P. meridionale, the axis puberulent, the branches ascending; spikelets 

 1.4 mm. long, 0.9 mm. wide, blunt and turgid, pilose; first glume about two fifths the length of 

 the spikelet; second glume and sterile lemma subequal, the glume scarcely equaling the fruit 

 at maturity; fruit 1.25 mm. long, 0.9 mm. wide, obtuse. 



Autumnal phase widely decumbent-spreading or ascending, freely branching at all but 

 the uppermost nodes, the branches narrowly ascending, the reduced, flat blades mostly ex- 

 ceeding the panicles. 



Type locality: Scranton, North Carolina. 



Distribution: Connecticut to North Carolina; .around the southern end of I^ake Michigan. 



Illustrations: Contr. U. S. Nat. Herb. 15: /. 217. 



135. Panicum implicatum Scribn. Bull. U. S. Dep. Agr. Agrost. 11: 



43. 1898. 



Panicum unciphyllum implicatum Scribn. & Merr. Rhodora 3: 123. 1901. 



Vernal phase with tufted, slender culms 20-55 cm, high, erect or ascending, papillose- 

 pilose with spreading hairs; leaf-sheaths shorter than the internodes, papillose-pilose; ligule 

 4r-5 mm. long; blades firm, erect or ascending, 3-6 cm. long, 3-6 mm. wide, rarely longer or 

 wider, more or less involute-acuminate, the upper surface pilose with erect hairs 3-4 mm. long, 

 the lower surface papillose-pubescent with subappressed hairs; primary panicles long-exserted, 

 pyramidal in outline, 3-6 cm. long, about as wide, the axis long-pilose, the branches flexuous, in 

 typical specimens tangled and the lower drooping; spikelets 1.5 mm. long, 0.9 mm. wide, obo- 

 vate, obtuse, papillose-pilose; first glume about one fourth the length of the spikelet, obtuse; 

 second glume and sterile lemma equaling the fruit at maturity; fruit 1.3 mm. long, 0.9 mm. 

 wide, broadly elliptic, obtuse, very minutely umbonate. 



Autumnal phase erect or spreading, rather loosely branching from the lower and middle 

 nodes, the primary culms becoming more or less geniculate below; leaves and panicles reduced; 

 winter leaves lanceolate-ovate, pilose above, the rosette appearing late. 



Type locality: Cape Elizabeth, Maine. 

 Distribution: Nova Scotia to Iowa. 



Illustrations: Bull. U. S. Dep. Agr. Agrost. 11: /. 2; 17: /. 373; Contr. U. S. Nat. Herb. 15: 

 /. 219; Britt. & Brown, 111. Fl. 3: App./. 267a; ed. 2./. 361. 



136. Panicum Huachucae Ashe, Jour. Elisha Mitchell Soc. IS: 51. 



1898. 



Panicum nitidum pilosum Torr. Fl. U. S. 146. 1824. Not P. pilosum Sw. 1788. 

 ? Panicum iowense Ashe, Bull. N. Car. Exp. Sta. 175: 175. 1900. 

 Panicum lanuginosum Huachucae Hitchc. Rhodora 8: 208. 1906. 



Vernal phase cespitose, usually stiffly upright, light-olivaceous, often purplish, harsh 

 to the touch from the copious, spreading, papillose pubescence of culms and leaves; culms 20-60 

 cm. high; nodes bearded with spreading hairs; leaf-sheaths shorter than the internodes; ligule 

 3-4 mm. long; blades firm, stiffly erect or ascending, 4r-8 cm. long, 6-8 mm. wide, the veins 

 inconspicuous, the upper surface copiously short-pilose, especially toward the base, the lower 

 surface densely pubescent; panicles rather short-exserted until maturity, 4-6 cm. long, nearly 

 as wide, rather densely flowered, the axis and often the branches pilose, the flexuous, fascicled 

 branches ascending or spreading, with short spikelet-bearing branchlets at base of the fascicles; 

 spikelets 1.6-1.8 mm. long, 1 mm. wide,' obovate, obtuse, turgid, papillose-pubescent; first 

 glume about one third the length of the spikelet; second glume and sterile lemma subequal, 

 scarcely covering the fruit at maturity; fruit 1.5-1.6 mm. long, 1 mm. wide, elliptic, obscurely 

 apiculate. 



