238 MICHIGAN SURVEY, 1908. 



road from Washington Harbor to Lake Desor, it is very abundant. 

 Reported to occur sparingly along other parts of the Greenstone, but 

 seems to be confined entirely to the higher parts of the summit ridge. 

 Along this "forest road" it forms almost pure stands, in other places 

 there is B. lenta and B. lutea mixed with it. 8ome of the trees are 2-3 

 feet in diameter. (Ill, '04.) 



190. Acer spicatum Lam. Mountain Maple. Generally distributed 

 in the forest, but nowhere very abundant. Largest trees over 30 feet 

 high. One of the lower growth forms to invade the forest roads. Often 

 in rocky places. V, 7; III, '04. 



191. Acer pennsylvanicum . Striped Maple, Moosewood. Rare on 

 island. 



Comaceac — Dogwood Family. 



192. Convus stolonifera Michx. Common in low ground and back 

 margins of bogs. A prominent member of the shrub zone surrounding 

 small lakes. 



193. Gm^us circinata L'Her. Round-leaved Cornel. Sparingly dis- 

 tributed in rich woods. 



Araceae — Arum Family. 



194. Calla palustris L. Water Arum. Lake margins, especially 

 abundant at Sumner Lake. Ill, 5. 



195. Spathyema foetida (L) Raf. Skunk Cabbage. Common in low 

 grounds in woods, and near logs. Ill, 5 ; II, 1, 2 ; II, 5 ; IV, 4. 



Juncaceae — Rush Family. 



196. Juncus effusiirS L. Along old road to "Island mine," and in 

 shallow water at upper end of Rock Harbor. Ill, 3. 



Melantlmceae — Bunch-Flower Family. 



197. Tofieldia palustris Huds. Asphodel. Rocks at Scovill Point, 

 JV, 1. 



189. Uvularia perfoUata L. JPerfoliate Bellwort. Rich, moist woods. 

 Scattered. 



Liliaceae — Lily Family. 



199. LiUii/in philadelphicum L. Red, or Wood Lily. Common in drier 

 parts of woods; even occurs as a rock crevice plant on the small islands 

 in Rock Harbor. 



Convallariaceae — Lily-of-the-Valley Family. 



200. CUntoma 'borealis (Ait.) Raf. Yellow Clintonia. Common 

 everywhere in moist, rich woods; verv abundant in places. I, 3; IV 

 4; V, 4; V, 5. 



201. Vagnera trifolia (L) Morong. Three-leaved Solomon's Seal. 

 Frequent in forest margins of bogs, and in cool, moist woods. I 4- II 

 2; V, 5. ' ' > 



