1901] Scribner & Merrill, — New England Panicum 125 
1886. CONNECTICUT: New London, C. B. Graves, 1898; Port- 
land, F. Wilson, 1897. 
This species is characterized by its lax habit of growth, thin 
leaves, which generally have a peculiar lustre or sheen, pale green, 
generally somewhat implicate panicles, at least in herbarium spec- 
imens, and long-pubescent spikelets. It is very closely related to 
Panicum unciphyllum, being distinguished by the characters noted 
above. Panicum lanuginosum is extremely variable and often can 
only be separated arbitrarily from the related species — it is possi- 
ble that it should be considered only as a variety of the preceding 
species. 
t f Plants pubescent with very short appressed hairs or only puberulent. 
33. PANICUM COLUMBIANUM Scribn. U. S. Dept. Agr. Div. Agros. 
Bul. 7: 78. fg. 60. 1897. (Panicum psammophilum Nash, Bul. Torr. 
Bot. Club, 26: 576. 1899.)—A slender, erect, tufted, finally much 
branched perennial, 2—4 dm. high, with firm, short, lanceolate leaves, 
and small flowered, oblong or subpyramidal usually purplish panicles, 
2—3 cm. long. Culms usually purple, appressed-hirsute or puberulent 
below, puberulent above: nodes with few short hairs, similar to 
those of the culm; sheaths shorter than the internodes, appressed- 
pubescent, the basal ones with long hairs, the upper and those of the 
branches with very short hairs, rarely nearly smooth; ligule a dense 
ring of hairs about 1 mm. long; leaf blades erect or ascending, 
thick, rather rigid, serrulate on the cartilaginous margins, puberulent 
beneath, the ovate, lanceolate basal ones and occasionally also those 
on the culm with a few very long scattered erect hairs on the upper 
surface, the primary blades 2—5 cm. long, 2-5 mm. wide, those of the 
branches smaller. Axis and the usually ascending branches of the 
panicle puberulent. Spikelets broadly obovate, 1.3-1.5 mm. long, 
rarely slightly larger, obtuse, the first glume about one-third as long 
as the spikelet, 1-nerved, acute or obtuse; second and third glumes 
densely pubescent 7-nerved, the second usually a little shorter than 
the third. 
General distribution: in dry sandy fields, sandy lake shores and 
especially near the coast from Maine to Virginia, May to August. 
MAINE: St. Francis, gravelly shores, 166 M. ZL. Fernald, Aug. s, 
1893; Fort Fairfield, M. Z. Fernald, July 14, 1893; South Berwick, 
J.C. Parlin & M. L. Fernald, July 14, 1896; Island Falls, M. Z. 
Fernald, Aug. 26, 1897. New HAMPSHIRE: Manchester, 7. W. 
Batchelder, 1895 (a large form). Vermont: Burlington, sandy pine 
clearing, back of St. Marys Academy, *7. Æ. H.”, June 25, 1808 ; 
* C, E. ,S"^, 1893. Lake Champlain, sandy bank on lake shore 
between Rock Point and Appletree Point, Ezra Praimerd, June 16, 
1898; South Burlington, Mrs. Nellie Flynn, July 5, 1896; Rutland, 
1756, 1758 W. W. Lggleston, June 12, 1899. MASSACHUSETTS: 
