33 
A very pretty ornamental tree. The wood is hard, and the grain is 
very regular. Seldom attains a diameter of more than 4 to 5 
inches. The compound leaves are often 3 feet or more in length. 
GLEDITSCHIA, L. 
262. G. triacanthos, L. Honey Locust. Three-thorned Acacia. 
Cultivated for ornament, and sparingly escaped in places. West. 
(B.) 
(o ? 
ROSACE-ZE. 
PRTJNTJS, Tourn. 
263. P. americana, Marsh. Wild Plum. Red Plum. 
q ^Moist open woods and banks of streams; frequent. May or first of 
June. (B.) 
One tree observed, measured 30 feet in height. There are two dis- 
tinct forms, one with slender branches and large flowers with 
glandular calyx, found in swamps, and another with stout branches 
and much smaller flowers, with the calyx less glandular, grows in 
dry soil. 
Prof. Dewey has observed a similar condition in Cayuga Co., N. Y. 
264. P. maritima, Wang. Beach Plum. 
Sandy soil. / o ^ 
One or two specimens were observed at Winnetka in 1882. Rogers 
Park, frequent. South Evanston, Johnson ! Lake shore, south, 
Marcy , Boltwood , Brennan! (B. P.) 
This is an Atlantic Coast plant, whose presence here can only be 
explained for the present, at least, by introduction. In its growth, 
however, it is seemingly indigenous. It is found in the sandy 
soil of the lake shore. 
-f- 265. P. pumila, L. Dwarf or Sand Cherry. 
' Sandy soil and bluffs ; infrequent. May. 
Mainly along the lake shore, both north and south. 
Often 6 feet high, Bastin. . 
266. P. Pennsylvania, L.f. Wild Red Cherry. Bird Cherry. , « 
Woods; rare. May. (B.) 
Chiefly in the northern part of our district. Lake shore, near 
Chicago, H. A. Warne , in Plants of Illinois. 
P. virg’iniana, L. Choke Cherry. 
Woods and banks of streams; frequent. May 5th — June 10th. 
268. P. serotina, Ehrh. Wild Black Cherry. 
y \\t Woods; infrequent. May 15th — June 20th. (B.) 
