284 Eleventh Annual Report 



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 (Retry 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 Alton. Wild Plum. 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 cm. (13^-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 cm. (M-/i 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 cm. (J^ 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 



