Part 3, 1915] P0AC3AE 



275 



Autumnal phase more freely branching than in P. lancearium, often forming large mats, 

 the decumbent culms producing ascending branches from all the nodes at about the maturity 

 of the primary panicles, these repeatedly branching, the ultimate branchlets crowded, but 

 about evenly so throughout, not in fascicles at the summit only, the spreading blades much 

 reduced; winter rosettes appearing early, the blades often 7 or 8 cm. long, glabrous or nearly 

 so on the upper surface. 



Type locality: Braidentown, Florida. 

 Distribution: Virginia to Florida and Louisiana. 

 Illustration: Contr. U. S. Nat. Herb. 15: /. 307. 



178. Panicum Webberianum Nash, Bull. Torrey Club 23: 149. 1896. 



Panicum onslowense Ashe, Jour. Elisha Mitchell Soc. 16: 88. 1900. 



Vernal phase commonly purplish; culms few to several in a tuft, rather stout, erect or 

 ascending, 20-50 cm. high, minutely puberulent or glabrous; leaves somewhat crowded below, 

 distant above; leaf-sheaths minutely puberulent at the summit, often ciliate on the margin, 

 otherwise glabrous or nearly so ; blades firm, ascending, especially the lower somewhat incurved 

 or spoon-shaped, 3-9 cm. long, 4—12 mm, wide, usually ciliate at base and sometimes along the 

 margin, rounded or subcordate at base, acute but not long-acuminate; panicles finally long- 

 exserted, 4-10 cm. long, two thirds as wide, the numerous flexuous branches spreading or the 



¥ 



lower even reflexed, the branchlets and pedicels usually rather short, thus giving to the main 

 branches a somewhat racemose appearance; spikelets 2.3-2.5 mm. long (in exceptional speci- 

 mens only 2.1-2.2 mm. long), 1.2-1.3 mm. wide, obovoid to pyriform, commonly green, con- 

 spicuously purple-stained at the base; first glume one third to two fifths as long as the spikelet ; 

 second glume and sterile lemma minutely pubescent or glabrous, the glume slightly shorter 

 than the fruit and sterile lemma; fruit 1.9-2 mm. long, 1.2 mm. wide, elliptic, under a lens 

 minutely papillose-roughened, puberulent at the tip. 



Autumnal phase spreading or decumbent, flabellately branching at the middle and upper 

 nodes, the branches appressed and rather evenly distributed, sometimes somewhat fascicled; 

 winter blades 3-8 cm. long, 5-10 mm. wide, strongly stained with purple, forming a flat rosette. 



Typs locality: Bustis, Florida. 



Distribution : North Carolina to Florida. 



Illustrations: Bull U. S. Dep. Agr. Agrost. 17: /. 377; Contr. U. S. Nat. Herb. 15: /. 309. 



179. Panicum patentif olium Nash, Bull. Torrey Club 26 : 574. 1 899. 



Vernal phase often purplish throughout; culms several to many in a tuft, slender and wiry, 

 widely decumbent-ascending, 25-55 cm. high, minutely puberulent or nearly glabrous; leaf- 

 sheaths much shorter than the elongate internodes, a puberulent ring at the summit, otherwise 

 glabrous or nearly so; blades stiffly spreading, 2.5-8 cm. long, 2-5 mm. wide, glabrous, acumi- 

 nate, narrowed and sometimes ciliate toward the base ; panicles commonly rather short-exserted, 

 3-7 cm. long, about half as wide, the branches few, ascending; spikelets 2.4-2.6 mm. long, 1.3 

 mm. wide, obovate, turgid; first glume one third to half as long as the spikelet, obtuse or suba- 

 cute; second glume and sterile lemma puberulent or nearly glabrous, the glume slightly shorter 

 than the fruit and sterile lemma; fruit 2 mm. long, 1.2 mm. wide, elliptic, smooth and shining, 

 minutely puberulent at the apex. 



Autumnal phase decumbent or spreading, branching from the middle and upper nodes, 

 the branches appressed and somewhat elongate, the secondary branchlets shorter and more or 

 less fascicled, not greatly reduced; winter rosettes appearing late, inconspicuous, the narrow 

 blades ascending. 



Type locality: Eustis, Florida. 



Distribution: Georgia to Florida and Mississippi. 



Illustration: Contr. U. S. Nat. Herb. IS: /. 311. 



180. Panicum Wilcoxianum Vasey, Bull. XL S. Dep. Agr. Bot. 8: 32. 



1889. 



Milium Wilcoxianum Lunell, Am. Midi. Nat. 4: 213. 1915. 



Vernal phase dull-green; culms usually in* dense tufts, erect, 10-25 cm. high, copiously 

 papillose-hirsute, as are the rather loose, usually overlapping leaf-sheaths; ligule about 1 mm. 



