MORACEAE 28 I 



2. C. canina Raf. In rich soil of fields and meadows: N. Y. to 



111. and S. Dak., south to Pa. and Mo. 



Localized in our range, near Bushkill, Pike Co., Pa., a region 

 north of the moraine with a growing season of 149 days, and under- 

 laid by Marcellus Shale. 



3. C. crassifolia Lam. In rich soil: Mass.?, N. Y. and Pa. to 



S. Car., west to Ind., S. Dak., Tenn., Kan. and Col. 

 N. Y. Garrison-on-Hudson. 

 N. J. Sussex Co. to Mercer Co. 

 Pa. Northampton and Bucks Co. 

 A localized species in our range. 



4. C. georgiana Small. Rocky and gravelly soil: N. J. to Fla., 



Ky., Mo. and Ala. 



Localized in our range, so far as known near Newton, Sussex Co., 

 N. J., a region north of the moraine, and with a growing season of 

 138 days. 



MORACEAE 



Staminate and pistillate flowers spiked; leaves dentate or lobed. I. Morus. 

 Staminate flowers racemose or spiked; pistillate capitate. 



Pistillate perianth deeply 4-cleft; leaves entire. 2. Toxylon. 



Pistillate perianth 3-4 toothed; leaves various. 3. Papyrius. 



i. Morus [Tourn.j L. 



Leaves rough above, pubescent beneath; fruit purple; spikes 2-6 cm. 



long. I. M. rubra. 



Leaves smooth and glabrous, or very nearly so, on both sides; fruit 



nearly white; spikes I— 1 .5 cm. long. 2. M. alba. 



i. M. rubra L. In river valleys or on moist hillsides: Mass. to 

 Ont., Mich, and Neb., south to Fla. and Tex. 



Throughout, except in the pine-barrens of L. I. and N. J. 



2. M. alba L. Naturalized along riversides from N. Eng., south- 

 ward. Native of Asia and Europe. 

 Occasional as an escape from cultivation. 



2. Toxylon Raf. 



1. T. pomiferum Raf. Mo. to Kan. and Tex., in the east 

 naturalized in New Eng. and Middle States. 

 Rare as a naturalized escape in our range. 



