202 BOTANY OF MICHIGAN 



Acer saccharum nigrum (Michx.f.) Britton. Black maple. Black 

 sugar maple. "Frequent in Akron and Columbia townships. " C. A. 

 Davis. 



Acer saccharinum L. Silver maple. Usually on borders of rich woods 

 and along small streams. Frequent. 



Acer rubrum L. Red maple. Common in rich wet ground with other 

 trees. 



Acer platanoides L. Norway maple. Occasionally planted in villages 

 along streets and in yards, but apparently not escaping. 



Acer negundo L. Box elder. Planted in villages as a street and yard 

 tree and escaping everywhere. "Banks of Cass River near Vassar. 

 Planted generally." C. A. Davis. 



SAPINDACEAE. Soapberry Family 



Aesculus hippocastanum L. Common horse-chestnut. Planted in 

 villages as a street and lawn tree and occasionally escaping. 



BALSAMINACEAE. Touch-me-not Family 



Impatiens biflora Walt. Spotted touch-me-not. Very common in 

 damp open and shaded places. 



RHAMNACEAE. Buckthorn Family 



Rhamnus alnifolia L'Her. Alder-leaved buckthorn. Common in 

 swampy places, especially near the small lakes. 



Ceanoihus americanus L. New Jersey tea. Red-root. Common 

 throughout on dry sandy ground. Noticed in particular on the hills 

 about the small lakes. 



VITACEAE. Vine Family 



Psedera vitacea (Knerr) Greene. American woodbine. American ivy. 

 Common in moist woods and along fences. Often cultivated as an orna- 

 mental vine. 



Vitis bicolor LeConte. Summer grape. In woods or open ground. 

 Noticed in particular on hilly ground near Cat Lake, Murphy's Lake 

 and Spruce Lake. 



Vitis vulpina L. River-bank grape. Common in woods and on dry 

 sandy or rich open ground, along streams, and often fringing the upper 

 beach of Saginaw Bay. Also on sand dunes. 



TILIACEAE. Linden Family 



Tilia americana L. Basswood. Common in rich ground with other 

 trees. 



