KEY FOR THE IDENTIFICATION OF TREES AND SHRUBS 67 



110. Leaflets oblong-lanceolate, 



coarsely serrate, stems trail- 

 ing, climbing by tendrils, dull 

 green, paler beneath. 



Virginia Creeper 

 Psedera qutnque folia 

 (L. ) Greene 

 110. Leaflets elliptic, margins 

 serrate, sharp spines below 

 the petioles. 



Spiny Panax 



Acanthopanax Sleboldlanus 

 Mak. 

 111. Leaves opposite, 5-7 leaflets, 

 some leaves twice compound, a 

 pithy shrub. See #114. 

 Elder 

 Sambucus canadensis L. 



111. Leaves alternate 112 



112. Leaf long and feather-like, 

 the swollen base of the 

 petiole set over the lateral 

 bud. See #107. 



Genus Rhus 113 



113.7-13 entire leaflets, 

 the pairs standing half 

 erect on the main leaf 

 stalk, stalk red. 



Poison Sumac, Poison Dog- 

 wood. 



Rhus Vernlx L. 

 113.11-21 unsymmetrical leaf- 

 lets, shining, with winged 

 stalks. 



Dwarf Sumac 

 Rhus copalllna L. 

 113.11-31 serrate leaflets, 

 stalks smooth. 

 -, Smooth Sumac 

 Rhus glabra L. 

 113.11-31 serrate leaflets, 

 stalks hairy. 



Staghorn Sumac 

 Rhus typhlna L. 



