382 REPORT OF NEW JERSEY STATE, MUSEUM. 



cccc. Leaves 3-5 foliate, stem prickly, flowers white. Riibus, p. 476 



bh. Stem erect. 



c. Leaves linear, 4-6 mm. long, no perianth, stamens purple. 



Corema, p. 530 

 cc. Leaves oval or obovate, 20-30 mm. broad, corolla white, urn- 

 shaped. Gaultlieria, p. 620 

 ccc. Leaves 3-foliate, stem not prickly, flowers small, greenish. 



Rhus. p. 536 

 aa. Woody climbing vines. 



b. Flowers large, tubular, orange, leaves pinnate. Tccoina, p. 695 



bb. Flowers white, leaves 3-foliate, fruit long-plumose. Clematis, p. 454 

 bbb. Flowers small, greenish. 



c. Leaves 3-foliate. Rhus, p. 536 



cc. Leaves 5-foliate. Pscdera, p. 548 



ccc. Leaves lobed. 



d. Fruit "hops." [Humuhis^*' 



dd. Fruit "grapes." Vitis, p. 546 



cccc. Leaves oval. Fruit round orange pods, splitting and displaying 



red seeds. Celastrus^ p. 543 



aaa. Upright trees or shrubs. 



b. Leaves pinnate or digitate. 

 c. Stem prickly. 



d. Leaves 3-5 foliate, fruit a many-seeded berry, flowers white, 

 showy shrubs. Rubus, p. 476 



dd. Leaves 5-9 foliate, fruit a pod containing black seeds, 

 flowers inconspicuous. Zanihoxylum, p. 518 



ddd. Leaves 7-15 foliate, fruit a flat pod, flowers white papili- 

 onaceous in a pendant raceme. Robina, p. 495 

 dddd. Leaves about 24 foliate, leaflets small, less than i in. (25 

 mm.) long, fruit a flat pod 8-15 ins. (2-4 dm.) long. 



[ Glcditsia triacanth os] f 

 cc. Stem not prickly. 



d. Leaves digitate, 5-foliate. [^^sculus hippocasfann)n]t 



dd. Leaves 3-foliate. 



e. Entire, fruit a flat winged seed. Pfelca, p. 519 



ee. Freely and regularly serrate, fruit in a bladder-like 

 bag; a shrub. Staphylca, p. 543 



eee. Coarsely toothed on terminal half, fruit a samara. 



Acer, p. 543 

 eeee. Several deep irregular lobes, fruit globular white 

 berries, shrubs or small trees. Rhus, p. 536 



ddd. Leaves 5-1 1 foliate. 



c. Trees with small greenish flowers in catkins or clusters. 

 /. Leaves sharply and regularly serrate, fruit a hard 

 nut enclosed in a thick hull. Hicoria, p. 397 



//. Leaves obscurely or bluntly serrate, fruit a samara. 



Fraxinus, p. 635 



* Hope Vine, escaped from cultivation. 

 t Honey Locust Tree, escaped. 

 + Horse Chestnut, escaped. 



