37 
+- 299. R. Carolina, L. Swamp Rose. 
Low places; rare. June — August. 4r - *- f " w 
From Colehour, Ind., southeast; frequent. June. 
'P'BOO. R. humilis, Marsh. Dwarf Wild Rose. 
B. iucida , in Manual, 5th Ed. 
Dry soil, occasionally in open woods and in moist soil at the border 
of swamps; common south, frequent elsewhere. June — July. 
301. R. rubiginosa, L. Sweet Brier. 
Established in old gardens. (B. P.) 
PIRTJS (Pyrus), L. 
302. P. coronaria, L. American Crab-apple. 
Open woods and fields; common locally. June — July 5th. 
It is not generally distributed, but is usually found in groups of 
several trees. The flowers are smaller when in the shade of other 
trees. A beautiful tree when in blossom. 
303. P. arfoutifolia, L.f. Choke Berry. 
J 
97 
304, 
Low and damp thickets, south; frequent. May — June. 
It is less common in the northern part of the county. 
P- 
P. americana, D C. American Mountain Ash. 
The only specimen known to be wild in our district was found in the 
open woods not far north of Windsor Park. This tree was 
removed in 1888 and transplanted to private grounds on the West 
side, Chicago. (B. P.) 
CRATiEGTJS, L. 
305. C. eoeeinia, L. Scarlet-fruited Thorn. 
^ D Dry banks and woods ; frequent. May — June. 
306. C. tomentosa, L. Black or Pear Thorn. 
Woods and banks of streams; infrequent. May 25th — June. 
A very variable species, occasionally thornless. 
307. C. punctata, Jacq. Hawthorn. 
C. tomentosa , L., var. 'punctata , Gray. 
Glencoe. Miller's, Ind., in woods; rare. (B.) 
808. C. erus-galli, L. Cockspur Thorn. 
Thickets; frequent. June. (B.) 
^'Whiting, Ind., and south. Niles. West of Blue Island. Riverside. 
Palatine. 
7 C- 9 
£ x 
|l3 
