ECOLOGY OF NORTHERN MICHIGAN. 81 



Water Lily. Several specimens were found in Carp river, IV. 1, which was 

 the only locality in which it was observed. 



Ranunculaceae Juss. Crowfoot Family. 



84. Caltha palustris L. Marsh-marigold. In the alder thickets along 

 Carp river, IV. 2; also common on the banks of Carp creek, VI. 



85. Coptis trifolia (L.) Salisb. Gold-thread. Common in the hard- 

 wood forest, II. 2, IV. 3, VI, and in the tamarack swamp, IV. 4. 



Sarraceniaceae LaPyl. Pitcher-Plant Family. 



86. Sarracenia purpurea L. Pitcher-plant. Found commonly in the 

 peat bog, IV. 4, and on a Sphagnum growth in the beaver meadow, VII. 2. 

 Not observed elsewhere. 



Rosaceae B. Juss. Rose Family. 



87. Opulaster opulifolius (L.) Kuntze. Eastern Ninebark. Upper Beach 

 of Lake Superior, I; in the aspen zone bordering the mountain top, II. 5, 

 and on the rocky bluff at the east end of Little Carp Lake, VII. 



88. Spiraea salicifolia L. American Meadow-sweet. In the cassandra 

 zone on Carp river, IV. 2, and about the margin of the beaver meadow on 

 Little Carp river, VII. 2. 



89. Rubus parviflorus Nutt. White-flowering Raspberry. In the aspen 

 zone about the clearing, II. 4, and mountain top, II. 5; in the open woods 

 near the top of the slope, II. 2, and in burnings, VI. Very common in 

 exposed situations. Locally known as the Thimbleberry 



90. Rubus strigosus Michx. Wild Red Raspberry. On the Upper Beach 

 of Lake Superior, I; in the aspen zone about the clearing, II. 4, and on the 

 mountain top, II. 5. Also at the foot of the talus slopes, III. 



91. Rubus nigrobaccus Bailey. High Bush Blackberry. Frequent in 

 the cassandra zone, IV. 2, especially near the margin of the alder thickets. 



92. Rubus hispidus L. Running Swamp Blackberry. Common in the 

 cassandra zone on Carp river, IV. 2, and in the beaver meadow, VII. 2. 



93. Comarum palustre L. Marsh Cinquefoil. In the cassandra zone, 

 IV. 2, and on the delta of Carp river, V. 2, and in the beaver meadow on 

 Little Carp river, VII. 2. 



94. Dasiphora fruticosa- (L.) Rydb. In the cassandra zone, IV. 2, and 

 on the delta, V. 2. 



94a. Potentilla argentea L. Silvery Cinquefoil. In rock crevices on the 

 Middle and Upper Beaches of Lake Superior, I. 



95. Sibbaldiopsis tridentata (Soland.) Rydb. Common, in the rock 

 crevices on the mountain top and on the cliff face, and among the rocks on 

 talus slopes, III. 



Pomaceae L. Apple Family. 



96. Sorbus americana Marsh. American Mountain Ash. Common on 

 the Upper Beach of Lake Superior, I, and at the foot of the talus slopes, 

 III. Also occurs on the rocky bluff at the east end of Little Carp Lake. 



97. Aronia nigra (Willd.) Britton. Black Chokeberry. Occasional on 

 _the lower part of the talus slopes, III. 



98. Amelanchier canadensis (L.) Medic. Juneberry. Common on the 

 Upper Beach of Lake Superior, I; in the aspen zone bordering the mountain 



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