TUSCOLA COUNTY 201 



ANACARDIACEAE. Cashew Tamil}' 



Rhus lyphina L. Staghorn sumach. Common throughoul in dry or 

 damp ground. 



Rhus glabra L. Smooth sumach. Frequent and usually on high and 

 dry ground. Noticed in particular on the hills aboul ( at Lake. 



Rhus copallina L. Dwarf sumach. Abundant on high ground in one 

 place near North Lake. Not noticed elsewhere. 



Rhus vernix L. Poison sumach. Poison dogwood. In swampy ground 

 throughout. Abundant in swamps near the small lakes. 



Rhus toxicodendron L. Poison ivy. Poison oak. Common in <\iv or 

 damp, open or shaded ground. In spots very abundant, especially on 

 sand ridges near the shore of Saginaw Bay. Occasionally climbing 

 trees as a vine, which form some authors designate as Rhus toxicodi n- 

 dron radicans (L.) Torr., climbing poison ivy. 



Rhus canadensis Marsh. Fragrant sumach. Noticed by Prof. C. A. 

 Davis on low sand ridges in northern part of Akron Township. 



AQUIFOLIACEAE. Holly Family 



Ilex verticillata (L.) Gray. Winterberry. Black alder. Common in 

 low ground and rich open woods, especially in the vicinity of the small 

 lakes. 



Nemopanthus mucronata (L.) Trel. Mountain holly. In tamarack 

 swamps and in swampy places among willows and other shrubs, espec- 

 ially in the vicinity of the small lakes. 



CELASTRACEAE. Staff Tree Family 



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Evonymus obovatus Nutt. Running strawberry bush. Frequent in 

 rich damp woods. Noticed in particular near Murphy's Lake. 



Celastrus scandens L. Climbing bittersweet. Common in woods, 

 thickets and along fences. Known in Michigan and Western < Ontario 



bitter-sweet. 



STAPHYLEACEAE. Bladder Nut Family 



Staphylea trifolia L. American bladder nut. "(ass River valley 

 north of Vassar and in Tuscola Township. r C. A. 1 >avis. 



ACERACEAE. Maple Family 



Acer spicatum Lam. Mountain maple. ( Jommon in swain])- and rich 

 open woods, especially about the small lakes. 



Acer pseudo-platanus L. Sycamore maple. Occasionally planted as 

 an ornamental tree, but not spreading. 



Acer so ccharum Marsh. Sugar maple. Common throughout in rich 

 ground with other trees, often covering hilly land. 



