82 MICHIGAN SURVEY, 1905. 



top, II. 5, III. 1, 4; on the ledges of the chff; at the bottom and top of the 

 talus slopes, III, and in the tamarack swamp, IV. 4. 



99. Crataegus sp. Thorn-apple. Occasional on the cliff face and on the 

 fine material at the top of the talus slopes. III. 



Drupaceae DC. Plum Family. 



100. Primus pumila L. Dwarf Cherry. On the Upper Beach of Lake 

 Superior, I, and in burnings, VI. 



101. Prunus pennsylvanica L. f. Wild Red Cherry. Common on the 

 lower parts of the talus slopes and on the finer material at the top, III, 

 Also occurs on the ledges of the cliff, III, and in burnings, VI. 



Papilionaceae L. Pea Family. 



102. Lathyrus maritimus (L.) Bigel. Beach Pea. Upper and Middle 

 Beaches of Lake Superior, I. 



103. Lathyrus ochroleucus Hook. Cream-colored Vetchling. "Upper 

 Beach of Lake Superior, I. 



Anacardiaceae Lindl. Sumac Family. 



104. Rhus glabra L. Scarlet Sumac. In the aspen zone about the clearing, 

 II. 4, and mountain top, II. 5. Also scattered over the talus slopes, III. 



105. Rhus microcarpa (Michx.) Steud. Northern Poison Oak. On the 

 talus slopes and cliff face. III. , 



Aceraceae St. Hil. Maple Family. 



106. Acer saccharum Marsh. Sugar or Rock Maple. The principal 

 forest tree of the region, forming, with a small portion of Balsam Fir, Bass- 

 wood and Hemlock, the climax forest of the region, 11. 2, IV. 3, VI. 



107. Acer spicatum Lam. Mountain Maple. Occurs as a scattered under- 

 growth in the hardwood forest, II. 2, IV. 3, VI; becoming more abundant 

 in the open woods toward the talus slopes. III, mountain top, II. 5, and 

 beach of Lake Superior, I. 



Rhamnaceae Dumort. Buckthorn Family, 



108. Ceanothus americanus L. New Jersey Tea. A prominent plant in 

 the heath society on the mountain top, HI. 2, 5, 6, and at the foot of the 

 talus slope. Also occurs on the finer material at the top of the talus slope 

 and on ledges of the cliff. 



Vitaceae Lindl. Grape Family. 



109. Parthenocissus quinquefolia (L.) Planch. Virginia Creeper. Occas- 

 ional on the talus slopes and cliff face. III. 



Tiliaceae Juss. Linden Family. 



110. Tilia americana L. Basswood. Occasional in the hardwood forest, 

 XL 2, IV. 3, VI. 



