oe s wa TER a T * 
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1901] Scribner & Merrill, — New England Panicum 123 
ing varieties and forms are recognized, a list which might be greatly 
extended, but in so doing it would only add more confusion to this 
difficult group, as we believe that no one would be able to recognize 
the forms described, no matter how minutely and carefully they 
might be characterized. i 
PANICUM UNCIPHYLLUM implicatum (Scribn.) (Panicum implica- 
tum Scribn. U. S. Dept. Agr. Div. Agros, Bul. 11: 43. fig. 2. 1898). 
This form is characterized by its weak culms, small leaves, and 
small implicate panicles. Leaves 3 to 5 cm. long, 3 to 6 mm. wide, 
pilose on both surfaces with rather longer hairs than in the species. 
Spikelets as in the species. In the type collection this form was 
found to be growing in patches of considerable extent, which were 
conspicuous for their reddish or purplish color. On account of 
intermediate forms this variety can only be arbitrarily separated 
from the species. 
General distribution: In marshes and wet soil, Maine to Illinois, 
south to North Carolina, June to August. 
MAINE: Cape Elizabeth, salt marsh, F. Lamson-Scribner, July 26, 
1895 (type); Orono, M. L. Fernald, Sept., 1890; East Auburn, 
moist pastures, E. D. Merrill, July 23, 1896, and in open woods, 
Aug. 1898; Manchester, F. Lamson-Scribner, July, 1896; Foxcroft, 
M. L. Fernald, July 25, 1894; Farmington, M. Z. Fernald, July 8, 
1896. VERMONT: Charlotte, low lands, C. Œ. Pringle, July 5, 1880. 
MassacHUsETTS: South Framingham, Æ. Z. Sturtevant, July 3, 
1890, also Æ. C. Smith, Sept. 1899; Stoneham, meadow, border of 
Spot Pond, 335 W. P. Rich, July 4, 1894; gravelly path, border of 
Doleful Pond, 319 W. P. Rich, July 4, 1894; Winchester, C. W. 
Jenks and C. W. Swan, July 19, 1890; Milton, 7. R. Churchill, June 
27, 1891. Linden, W. P. Ri, Aug. 1, 1880; Sharon, W. P. Rich, 
July 5, 1895; Truro, W. P. Rich, July 4, 1895. CONNECTICUT: 78 
C. B. Graves, June 16, 1899. 
PANICUM UNCIPHYLLUM MERIDIONALE (Ashe) (Panicum meri- 
dionak Ashe, Journ. E. Mitch. Sci. Soc. 15: 59. 1898; Panicum 
Jiliculme Ashe, |. c.) 
This form is scarcely worthy of specific rank and can only be 
separated arbitrarily even as a variety, on account of intermediate 
forms. It is characterized by its small size, 10 to 3o cm. high, 
small leaves and panicles. Leaves 2 to 4 cm. long, about 4 mm. 
Panicle 2 to 5 cm. long. Spikelets as in the species. 
General distribution: in dry soils, Massachusetts to North Caro- 
lina and Georgia, June to August. 
MASSACHUSETTS: Hyannis, dry sandy soil, 7. A. Churchill, July 4, 
1896; J. AR. Churchill, July 2, 1882; Nantucket, Z. LZ. Dame 
(1887 ?) ; no locality, C. W. Swan. 
Panicum filiculme Ashe cannot be distinguished from this form 
either by the original descriptions or by comparison of typical 
material. 
