Tick Okahsks ok Tk.nnksskk. 68 



stem three to four inches lonjj, four to five lines wide, very acute, 

 abruptly rounded and somewhat cordate at the base; leaves of the 

 branches smaller. Panicle two to three inches lonj^, ditTuse, the 

 capillary branches more or less spreading, and compound to the base; 

 pedicels glabrous. Spikelets three-fourths to nearly one line lonp^, 

 oblong-elliptical, obtuse; first glume thin, almost hyaline, nerve- 

 less, broadly obtuse, about one-fifth the length of the spikelet; 

 second and third glume seven-nerved, obtuse, pubescent; the third 

 glume with a palea; fourth glume smooth, obtuse. Open woods 

 and thickets, usually in moist soil. June — July. 



This grass ditYers from P. barbulatutn in being hairy throughout. 

 It is reduced to P. pubescens Lam., by Trinius, under a section with 

 branched culms and spikelets less than a line long. 



28. Panicum longipedunculatum Scribn. 



Plate XVr. Fio:ure 61. 



A slender cespitose perennial, six to fifteen inches high, with 

 short, chietiy radical, pilose leaves and diffuse, small-flowered, long 

 exserted panicles. Culms branched at the base and often geniculate 

 at the lower joints,smooth or pilose; nodes more or less bearded with 

 erect hairs. Sheaths rather densely pilose to nearly smooth; ligule 

 a fringe of long hairs; leaf-blade one to two inches long, two to four 

 lines wide, the uppermost one-half to one inch long, acute, cor- 

 date-clasping at base, margins ciliate, surfaces striate and silky- 

 pilose or nearly smooth. Panicle one to three inches long, ovate- 

 pyramidal, the main axis and primary branches pilose; pedicels 

 capillary and much longer than the spikelets. Spikelets one-haif 

 to two-thirds of a line long, ovate-elliptical, obtuse; first glume one- 

 fourth to one-half as long as the others; second and third glumes 

 rounded-obtuse, smooth, faintly five- to seven-nerved; the third 

 with a small palea; fourth glume smooth. Damp woods, White 

 Cliff Springs, July. 1890: Tullahoma, July, 1892 A large form of 

 this species is represented by No. 3597* A. H. Curtiss, N. Am. PI. 



Closely allied to P. ciliatum, but the nodes and usually the sur- 

 faces of the spreading leaves are hairy, and the spikelets are 

 nearly one-half smaller, with very obscurely-nerved glumes. 



29. Panicum nitidum Lam. 



Panicle branching, violet-tinged, empty glumes striate, obtuse, 

 minutely hispid, glume of the fertile flower shining (Lam. IIL, L, 

 No. 899. [1791]). In his Encyclopedie Methodique, (\'ol., I\'., p. 748 

 [1797]) Lamarck characterizes the species more fully: Culm about 

 a foot high, glabrous, leafy. Leaves two to three lines broad, 

 glabrous except at the mouth of the sheath, which is long and 

 striate. Panicle of medium size, branched, two to three inches 

 long and tinted violet-brown, as are the nodes of the stem. Spike- 

 lets oval, obtuse, awnless, striated, slightly hispid, tinged with 

 violet-brown. Grains very shining. 



The original specimen upon which this species was based came 

 from Carolina, but Lamarck states that Michaux found it in other 

 parts of North America. Doubtless the plant described by Mi- 

 chaux (Flor. Bor. Am., I., p. 49 [1803]) was the same as that pub- 



