207 
line, about half as wide as long or wider, one side having a groove 
on each face near the edge. This species is extremely variable and 
it is hoped some one can give it a detailed study. 
Distribution. New York to Montana, south to Florida and west 
to Texas. Found throughout Indiana, usually along the banks of 
streams, and the sides of ravines. It generally occurs in open places 
and at present is more or less frequent along unkept fences. Al- 
though general in its distribution it is more or less rare in our area. 
It is a small tree and is usually found growing in clumps. 
The published records of the distribution are as follows: Cass 
(Hessler); Clark (Smith); Delaware (Phinney); Delaware, Jay, Ran- 
dolph and Wayne (Phinney) ; Fountain (Brown); Franklin (Meyncke) ; 
Gibson (Schneck); Hamilton (Wilson); Jefferson (Barnes), (Coulter) 
and (Young); Knox (Ridgway); Kosciusko (Chipman), (Coulter) 
and (Scott); Lake (Blatchley); Marion (Blatchley) and (Wilson); 
Marshall (Hessler); Miami (Gorby); Monroe (Blatchley); Noble 
(Van Gorder); Porter (Blatchley); Posey (Schneck); Putnam (Mac- 
Dougal); Steuben (Bradner); Tippecanoe (Cunningham); Vigo 
(Blatchley); Wayne (Petry and Markle). 
Additional records are: Montgomery (Evans); Putnam (Grimes) ; 
Tippecanoe (Coulter); Blackford, Clark, Dearborn, Delaware, Har- 
rison, Lawrence, Marion, Starke, Vermillion, Warren and Wells 
(Deam). 
Economic uses. Tree too small and rare to be of any economic 
importance. 
3. Prunus nigra Aiton. Witp Ptum. Plate 100. Bark brown, 
separating and rolling back from one edge; twigs at first green and 
smooth or hairy, becoming smooth and reddish-brown; winter buds 
brown, acute, scales blunt and more or less fringed with hairs; 
leaves oval to obovate, 4-10 em. (11%-4 inches) long, rounded or 
slightly narrowed at the base, taper-pointed at the apex, margins 
with rounded teeth ending in a gland, sparingly hairy on both sur- 
faces when they expand, becoming at maturity a dull dark green 
above, paler beneath, slightly pubescent both above and below, or 
sometimes almost glabrous; petioles 0.5-2 em. (14-34 inch) long, 
usually bearing 1 or 2 glands near the base of the blade, the channel 
pubescent; flowers appear in April before the leaves, 2-3 together, 
about 1.5 em. (1% inch) across, white turning pinkish; calyx lobes 
ovate and blunt, sometimes narrower, the margins minutely serrate 
and tipped with dark red glands, smooth or nearly so on both sur- 
faces, usually with a border of hairs at the base within; fruit ripens 
