Cornus 



CORNACEAE 



731 



50 



Map 1557 



Cornus rugosa Lam. 



30 

 Map 1558 

 iornus stolonifera var Baileyi 

 Coulter & Evans) Dresher 



50 



Map 1559 



Cornus aspenfolia Michx. 



2. Cornus florida L. (Cynoxylon floridum (L.) Raf.) Flowering 

 Dogwood. Map 1555. Frequent to common in dry woods throughout the 

 state except in the northwestern part where it is absent from the sandy 

 black oak woods. The largest tree I have seen was in Warrick County, 

 which had a clear bole of 10 feet and measured 40 inches in circumference 

 at four and a half feet above the ground. 



S. Maine and Ont. to Minn., southw. to Fla. and Tex. 



3. Cornus alternifolia L. f. Pagoda Dogwood. Map 1556. Infrequent 

 to rare in the greater part of the state. We have only one record for the 

 southwestern part of the state and none for the prairie counties. It usually 

 grows in moist rich soil at the base of usually rocky, wooded slopes along 

 or near streams where it may be locally frequent. The largest specimen 

 seen was in Warren County which was 4 inches in diameter at breast 

 height, and had a clear bole of 6 feet. 



Newf. to Minn., southw. to Ga., Ala., and Mo. 



4. Cornus rugosa Lam. (Cornus circinata L'Her.) Roundleaf Dog- 

 wood. Map 1557. Found in the counties indicated on the map. The reports 

 for other counties are, no doubt, errors in determination. It is infrequent 

 on the moist shady slopes in the dunes near Lake Michigan, on the high 

 sandy bank of Pigeon River west of Mongo in Lagrange County and in a 

 low sandy woods north of Pigeon River 3 miles east of Mongo, and on the 

 crest of a wooded ridge along Sugar Creek about a mile east of the Shades 

 in Montgomery County. The Montgomery county plant was found in a 

 relict area with Pinus Strobus, Gaultheria procumbens, and Rhus typhina. 



E. Que. to Man., southw. to Va., Ind., 111., Iowa, and N. Dak. 



5. Cornus stolonifera Michx. RED-OSIER DOGWOOD. Map 1560. Infre- 

 quent to rare in swamps and wet places, mostly in the lake area. Nos. 2, 3, 

 5, and 7 flower about 2 weeks earlier than the other species. 



Lab. to Mackenzie, southw. to Va., Ky., Iowa, Nebr., N. Mex., Ariz., and 

 Calif. 



