56 Rhodora [MARCH 
PANICUM. 
P. Addisonii Nash, ‘ Andover, Blake in 1882" ; see Hitchcock 
& Chase, Contrib. U. S. Nat. Herb. xv. 244, 1910. 
P. agrostoides Spreng. Low open ground, frequent. 
P. Ashei Pearson. Rocky woods, Melrose (W. P. Rich, June 28, 
1894, July 4, 1894, June 16, 1895). 
P. barbulatum Michx. Dry sandy soil; Malden (R. Frohock, 
1879); Mattapan, Dorchester (J. R. Churchill, June 21, 1890); Sher- 
born (M. L. Loomis, no. 1007, June 14, 1912); Hanson (J. A. 
Cushman, no. 2925, June 5, 1908). 
P. boreale Nash. Moist soil, occasional in northern half of dis- 
trict, also at Sharon. 
P. Boscii Poir. Rocky woods, Horn Pond Hill, Woburn (4. S. 
Pease, no. 11,364, July 8, 1908); Dorchester (J. R. Churchill, July 1, 
1882); Natick (C. H. Knowlton, Sept. 4, 1898). 
P. calliphyllum Ashe. Medford (C. E. Perkins, Aug. 3, 1881). 
The type collection near Ithaca, N. Y., and a collection at Painesville, 
O. are the only others known. See Hitchcock & Chase, Contrib. U. S. 
Nat. Herb. xv. 178, 1910. 
P. capillare L. Gardens, shores and waste land, a very common 
weed throughout. 
P. clandestinum L. Dry or moist soil, often in thickets or along 
streams, frequent. 
P. Clutei Nash. (P. mattamuskeetense Ashe of Gray's Manual, 
7th ed., 1908; see Hitchcock & Chase, Contrib. U. S. Nat. Herb. 
xv. 188, 1910). Framingham (E. C. Smith, June 21, 1892). 
[P. columbianum Scribn. In Rmopoma iii. 126, 1901, this species 
is cited from Nantasket Beach, Massachusetts, collected by Dr. Ezra 
Brainerd, June 11, 1896; but this specimen has been examined by 
Hitchcock € Chase who pronounce it to be P. tsugetorum Nash, 
the hairy form called by them “ P. lanuginosum siccanum ” in Contrib. 
U. S. Nat. Herb. xv. 245, 1910. This variety was published by them 
in Ruopora, viii. 207, 1906.] 
P. commutatum Schultes. Dry bank in woods, Wellesley (W. 
P. Rich, June 14, 1899; see Hitchcock & Chase, Contrib. U. S. Nat. 
Herb. xv. 306, 1910). 
P. dichotomiflorum Michx. Wet shores, cultivated and waste 
land, frequent. 
