HITCHCOCK AND CHASE—-NORTH AMERICAN PANICUM. 277 
Grorata: Brunswick, Ruth in 1893 (Ohio State Univ. Herb.). 
FLorwa: Jacksonville, Curtiss 4637 (Hitchcock Herb.), J. D. Smith 570; Lake 
City, Hitchcock 1024; Apalach- 
icola, Biltmore Herb. 6204a; 
Seville, Curtiss 6610; Titus- 
ville, Chase 3964; Hitchcock 
7663; Grasmere, Combs 1164; 
Eustis, Chase 40514, Hitchcock 
792, 811, Nash 781; Sanford, 
Hitchcock 782; Tampa, Hitch- 
cock 9304; Wimauma, FTitchcock 
979; Arcadia, Hitchcock 855; 
Kalamazoo, Hitchcock 7654; 
Lakeland, Hitchcock 838}, 840; Fig. 310.—Distribution of P. webberianum. 
Braidentown, Hitchcock 955, 
972, Tracy 6716; Johns Pass, Tracy 7186; Jensen, Hitchcock 735, 748; Myers, 
Chase 4163, Hitchcock 910, 918, Lee Co. Pl. 470; Miami, Hitchcock 630; without 
locality, Rugel 443. 
167. Panicum patentifolium Nash. 
Panicum patentifolium Nash, Bull, Torrey Club 26: 574. 1899. ‘‘Type collected 
by the writer at Eustis, Lake Co., Florida, March 12-31, 1894, no. 72, in dry sand ina 
scrub hammock.’’ The type, in Nash’s herbarium, is the vernal form with two 
autumnal culms of the preceding year attached; all the blades are narrow, even the 
basal ones not over 4 mm. wide. 
DESCRIPTION. 
Vernal form often purplish throughout; culms several to many in a tuft, slender and 
wiry, widely decumbent-ascending, 25 to 55 cm, high, minutely puberulent or nearly 
glabrous; sheaths much shorter than the elongated internodes, a puberulent ring at 
the summit, otherwise glabrous or nearly so; blades stiffly spreading, 2.5 to 8 cm. long, 
2 to 5 mm. wide, glabrous, acuminate, narrowed and sometimes ciliate toward the base; 
panicles commonly rather short-exserted, 3 to 7 em. long, about half as wide, the 
branches few, ascending; spikelets 2.4 to 2.6 mm. 
long, 1.3 mm. wide, obovate, turgid; first glume 
one-third to half as long as the spikelet, obtuse or 
subacute; second glume and sterile lemma puberu- 
lent or nearly glabrous, the glume slightly shorter 
than the fruit and sterile lemma; fruit 2mm. long, 
1.2 mm. wide, elliptic, smooth and shining, mi- 
nutely puberulent at the apex. 
Autumnal form decumbent or spreading, 
branching from the middle and upper nodes, the 
branches appressed and somewhat elongated, the 
secondary branchlets shorter and more or less 
fascicled, not greatly reduced; winter rosettes appearing late, inconspicuous, the 
narrow blades ascending. 
This species differs from P. webberianwm in the more slender culms, narrower, 
spreading culm blades, absence of the large basal blades, and less turgid spikelets in 
which the fruit is smooth and shining. 
Fig. 311.—P. patentifolium. From 
type specimen. 
