FLORA OK THE ri'i'HU SUS'^l EHANNA. 25 



PARTIIICNOCISSUS Plan. ii. 



P. quinquefolia (L.) Planch. Woodium:. X'ikcima Ckkki-kk. 

 Ai)un(lant iii woods, thickets and along fence rows. Common 

 in cultivation. Often mistaken for poison ivy. Fruit purplish 

 black. Leaves turning crimson in autumn. {Anipelopsis (/u/n- 

 q III'/ alia Michx.) 



HIPPOCASTANACE^. 



^SCULUS L. 



/C. Hippocastanum L. Horse Chestnut. Common in cultiva- 

 tion for shade, and occasionally escapes. 



ACERACE^. 



ACER L. 



A. Pennsylvanicum L. Strii'ed Mai'le. Moosewood. Whistle- 

 wood. Stru'Ed Dogwood. Common. Most plentiful in ra- 

 vines and along cliffs. Readily distinguished by its smooth, 

 light-green bark, heavily striped with ashy-green. The bark of 

 the trunk does not become rough except in the oldest individ- 

 uals. With us, it is seldom more than a shrub ; but there are a 

 few trees within our limits with trunks eight inches in diameter. 



A. spicatum Lam. Mointain Mai'Lehlsh. Spiked Maple. Goose- 

 looT .Maple. Abundant; forming thickets along mountain 

 streams, in glens and ravines. 



A. Saccharum Marsh. Sucar Maple. Rock Maplk. Hard Ma- 

 ple. Common in woods and the open fields. The species most 

 commonly used for a shade tree. From the sap of this and the 

 following is produced most of our maple sugar. {A. sacchari- 

 niim Wang. ) 



A. nigrum Michx f. Black Maplf. Not so common as the pre- 

 ceding with which it is very often confounded. May be dis- 

 tinguished by its darker bark. Blooms earlier. {A. sacchari- 

 num var. nigra m T. & G. ) 



A. saccharinum L. Silver Maple. White Maple. River Ma- 

 ple. Very common. Almost restricted to the banks of streams. 



