MICHIGAN ACADEMY OF SCIENCE. 177 



Aquifoliaceae. Holly Family. 



Ilex verticillata (L.) Gray. Black Alder. Winterberry. — Common on low 

 ground, in damp open woods and thickets. 



Nemopanthes mucronata (L.) Trel. Mountain Holly. — Common in 

 damp thickets, and in tamarack swamps. 



Celastraceae. Staff Tree Family. 



Evonymus obovatus Nutt. Rumiing Strawberry Bush. — Frequent and 

 usually in rich shaded ground. 



Celastrus scandens L. Climbing Bittersweet. — Common along streams 

 and in damp open woods. In western Ontario and in Michigan called 

 "bittersweet." 



Staphyleaceae. Bladder Nut Family. 



Staphylea trifolia L. American Bladder Nut. — Frequent along streams, 

 in rich open woods and thickets. 



Aceraceae. Maple Family. 



Acer spicatum, Lam. Mountain Maple. — Frequent in damp woods and 

 thickets. 



Acer saccharum, Marsh. Sugar Maple. — Frequent in rich ground with 

 other trees. 



Acer saccharum nigrum (Michx. f .) Britton. Black maple. — Noticed along 

 the Aux Sables river. Plentiful. 



Acer saccharinum L. Silver Maple. — Frequent in rich ground with other 

 trees and on banks of streams. 



Acer rubrum L. Red Maple. — Common in wet rich ground and on river 

 bottoms with other trees. 



Acer platanoides L. Norway Maple. — Often planted but not spreading. 



Acer psuedo-platanus L. Sycamore Maple. — Occasionally planted but not 

 spreading. 



Acer negundo L. Box Elder. — Planted and spreading by seed. 



Sapindaceae. Soapberry Family. 



Aesculus hippocastanum L. Common Horse-chestnut. — Planted and oc- 

 casionally escaping to roadsides, fields and waste places. 



Balsaminaceae. Touch-me-not Family. 



Impatiens pallida Nutt. Pale Touch-me-not. — Occasional in damp shaded 

 places and in rich shaded ground along streams. 



Impatiens biflora Walt. Spotted Touch-me-not. — Very common in damp 

 shaded ground. 



Rhamnaceae. Buckthorn Family. 



Rhamnus alnifolia L'Her. Alder-leaved Buckthorn. — Common in swamps, 

 damp thickets and open marshy ground. 



Ceanothus americanus L. New Jersey Tea. — Common on dr}' and sandy 

 ground in open woods and thickets. 



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