104 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
52. Panicum stipitatum Nash. 
Panicum elongatum Pursh, Fl. Amer. Sept. 1: 69. 1814, not Salisb. 1796. ‘“‘New 
Jersey to Virginia.’”’ Among the Pursh plants in Kew Herbarium are two sheets 
labeled ‘‘Panicum elongatum Pursh. Fl: Amer.,’? on one of 
which is a robust specimen and a ticket bearing an unpub- 
lished herbarium name, and also the name ‘‘elongatum ’’ and 
the word ‘‘Delaware.’’? This is taken as the type. On the 
second sheet are two slender specimens, one of this species 
and the other of P. agrostoides. 
Panicum agrostoides elongatum Scribn. Tenn. Agr. Exp. Sta. 
Bull. 7: 42. pl. 9. f. 34. 1894. Based on P. elongatum Pursh. 
Panicum stipitatum Nash in Scribn. U. 8. Dept. Agr. Div. 
. Agrost. Bull. 17 (ed. 2): 56. f. 352. May 22,1901. Based on 
A aga ee P.elongatum Pursh, 1814, not Salisb. 1796. ‘‘Nash, in Britt. 
Manual, 83, 1901,’ is here cited as the place of publication, 
but this must have been taken from proof sheets, since the Manual was not published 
until after August 24, 1901, that being the date given after the preface. 
DESCRIPTION. 
Plants like P. agrostoides in habit, often purple-tinged throughout; culms on the 
average stouter, strongly compressed; sheaths much overlapping, blades usually 
equaling or exceeding the terminal panicles, often scabrous on the lower surface; 
panicles usually several to a culm, sometimes as many as five axillary panicles, com- 
monly dark purple, short-exserted, 10 to 20 cm. long, one-third to half as wide, 
densely flowered, the numerous stiff branches ascending, with numerous divaricate 
branchlets mostly from the lower side and beginning at the base, bearing crowded, 
subsecund spikelets, the short, scabrous pedicels only rarely with one or two erect 
hairs; spikeleis 2.5 to 2.8 mm. long, about 0.7 mm. wide, often curved at the point; 
first glume about half the length of the spikelet; second glume and sterile lemma 
subequal, scabrous on the midnerve at the acuminate apex; fruit about 1.5 mm. 
long, about 0.6 mm. wide, short-stipitate. 
Typical specimens of this species are characteristic and readily distinguished from 
P. agrostoides, but less densely panicled forms, with smaller spikelets approach that 
species. Such are the following: Bush 
3658, Chase 4497, Cocks 3008. In these 
specimens the fruit is stipitate, for 
which reason they are referred to this 
species. 
DISTRIBUTION. 
Moist soil, Connecticut to South 
Carolina, west to Kentucky, Missouri, 
and Texas. 
Connecticut: Lyme, Graves 236. 
New Jersey: Camden, Scribner 
39 in part; Oradell, Mackenzie 
1893. 
PENNSYLVANIA: Chambersburg, Porter in 1897; Westchester, Darlington in 1827. 
On10: Lancaster, Kellerman 6800. 
Missouri: Williamsville, Bush 3658. 
Detaware: Greenbank, Commons 25 and 305 in 1884. 
MaryLAND: Hyattsville, House 1443. 
Fig. 97.—Distribution of P. stipitatum. 
