124 Rhodora [May 
PANICUM UNCIPHYLLUM forma prostratum. — A low, spreading, 
much branched form with lax, very few-flowered panicles, thin leaves, 
and spikelets nearly 2 mm, in length. Culms slender, some of them 
trailing. Panicle branches remote, spreading, few-flowered. — Dry 
woods, South Berwick, Maine, M. L. Fernald, September 26, 1897. 
PANICUM UNCIPHYLLUM forma pilosum. — A slender, very pubes- 
cent, rather flaccid form, with small, ovate, exserted panicles, about 
3 cm. long, erect leaves, which are pilose on both sides with 
scattered, long white hairs and spikelets nearly 2 mm. in length. — 
Dry woods, Orono, Maine, 501 M. Z. Fernaid, July 7, 8191. 
The above two forms are readily distinguished from the species 
and are perhaps even more worthy of varietal rank than the forms 
treated above as varieties. 
32. PANICUM LANUGINOSUM. Ell. Sk. Bot. S. C. and Ga. 1: 123. 
1817. (Panicum tennesseense Ashe, Journ. E. Mitch. Sci. Soc. 15: 
52. 1898).—An erect or ascending finally much branched pubescent 
perennial 1.5-8 dm. high, with weak culms, very thin leaves and 
slightly exserted, usually many-flowered panicles. Culms geniculate 
below, papillate-pilose with few weak, spreading hairs ; nodes yellow 
sparingly bearded with few, reflexed hairs, and generally with a 
smooth ring immediately below; sheaths shorter than the internodes, . 
rather loose, striate, papillate-pilose with.scattered spreading hairs; 
leaf-blades spreading or ascending, thin, soft, lanceolate, 3-8 cm. 
long 4-10 mm. wide, acute, slightly narrowed to the rounded base, 
scabrous on the margins, appressed-pubescent beneath with scattered, 
short, papillate hairs, and often also on the upper surface, giving the 
leaves a peculiar lustre or sheen. Panicles 4-8 cm. long, broadly 
ovate or sub-pyramidal, pale green ; rachis pilose ; branches capillary, 
spreading, the lower ones often densely flowered, and interlaced 
giving the panicle a characteristic matted appearance; secondary 
panicles included, few flowered. Spikelets ovate, obtuse; first 
glume hyaline, acute, one-fourth as long as the spikelet; second and 
third glumes, rather strongly striate, pilose with spreading hairs. 
General distribution: in low thickets, woods and swamps, Maine 
to Illinois, south to Kansas and Mississippi, May to August. 
Mane: Orono, low thicket, M. Z. Fernald, July 7, 1892, and in 
sandy river thicket, July 12, 1897 ; Carrying Place Plantation, M. 
L. Fernald, July 29, 1892, an unusally smooth form. VERMONT: 
Wallingford, Æ. Brainerd, Sept. 6, 1881; Middletown, Æ. Brainerd, 
June 13,1880. MassacuusETTS: Framingham, Æ. C. Smith, July 24, 
1899; Revere, Oak Island, 77. A. Young, July 16, 1882; Revere, 
W. P. Rich, July 9, 1899; Melrose, Cascade Region, W. P. Rich, 
July 17, 1892 : Malden, Æ. A. Young, June, 1879; East Gloucester, 
W. Swan, July 14, 1881 ; Beaver Brook Reservoir, C. W. Swan, 
July 6, 1394; Happy Valley, Stony Brook Reservoir, W. H. Mann- 
ing, June 17, 1895.  RHopE IsLanp: Providence, 7: 7. Battey, 
