HITCHCOCK AND CHASE—-NORTH AMERICAN PANICUM. 227 
DISTRIBUTION. - 
Dry prairies and clearings, Michigan and Indiana to Minnesota and Texas. 
InpIANA: Hessville, Hill 49 in 1909. 
Inurnois: Joliet, Hill 37 in 1907; Wady Petra, V. H. Chase 472, 649, 1212, 1214, 
1218, 1492, 1515; Marshall County, V. H. Chase 1791; Williamsfield, V. H. 
Chase 1850; Havana, Gleason 
1034. 
MicuicANn: Port Huron, Dodge in 
1909. 
Wisconsin: Lauderdale, Bebb 
2057. 
Minnesota: Itaska Lake, Sand- 
berg 1016. 
Iowa: Fort Dodge, Somes 25; 
Armstrong, Cratty in 1890; 
Towa City, Somes 246. 
Nesraska: Broken Bow, Webber 4, ‘Fig. 236.—Distribution of P. praecocius. 
Missouri: Monteer, Bush 748, 749 
in part; McDonald County, Bush 87; Howell County, Bush 54; Lees Sum- 
mit, Bush 3090, 3935. 
Kansas: Manhattan, Carleton in 1892, Hitchcock 2500, 2524, 3853, Kellerman 20; 
Belleville, Hitchcock 3544. 
Texas: Waller County, Thurow 5, and in 1906; Weatherford, Tracy 7943 in part. 
OxiaHoma: Stillwater, Hitchcock in 1903 (Hitchcock Herb.). 
132. Panicum subvillosum Ashe. 
Panicum subvillosum Ashe, Elisha Mitchell Soc. 16: 86. 1900. ‘‘Collected by the 
writer at Carlton, Minnesota, in August, in the simple state. Type material pre- 
served in my herbarium.’’ The type specimen, in Ashe’s herbarium, consists of 
three tufts of several culms each, 15 to 30 cm. high, with leaves clustered at the base 
and long-exserted mature panicles. 
Panicum unciphyllum forma pilosum Scribn. & Merr. Rhodora 3: 124. 1901, not 
Panicum pilosum Swartz, 1788. ‘‘Dry woods, Orono, Maine, 501 M. L. Fernald, 
July 7, 1891.’ The type, in the National Herbarium, consists of a tuft of nine slender 
culms 15 to 35cm. high, with long-exserted nearly mature panicles. 
DESCRIPTION. 
Vernal culms tufted, 10 to 45 cm. high, slender, ascending or spreading, pilose with 
ascending hairs, usually faintly papillose, the lower internodes short, thus making the 
plant more leafy below, the nodes short-bearded; 
sheaths sparsely pilose with ascending hairs, the 
lower overlapping, the upper much shorter than 
the long internodes; ligules 3 mm. long; blades 
rather firm, ascending, 4 to 6 cm. long, 4 to 6 mm. 
wide, rarely wider, acuminate, slightly narrowed 
toward the base, both surfaces pilose, the hairs on 
the upper surface 3 to 5 mm. long, shorter on the 
Fic. 237.—P. subvillosum. From x 3 
type specimen. lower; panicles long-exserted, ovate to oblong in 
outline, 3 to5 cm. long, two-thirds to three-fourths as 
wide, rather densely flowered, the axis pubescent or toward the base pilose, the lower 
branches ascending; spikelets 1.8 to 1.9 mm. long, 0.9 mm. wide, elliptic, obtuse, 
pubescent; first glume nearly or quite half the length of the spikelet, acuminate; 
