PLANTS OF SOUTHERN NEW JERSEY. 383 



ee. Shrubs with small white flowers in dense cymes, develop- 

 ing black, juicy berries. Sambucus, p. 708 

 dddd. Leaves 11-17 foliate. 



e. Leaves entire, fruit a samara. [Ailanthus glandulosus]* 

 ee. Leaves serrate. 



/. Fruit a dense cluster of pubescent seeds (usually 

 crimson red). Rhus, p. 536 



ff. Fruit a hard nut inclosed in a hiiU. luglans, p. 397 

 bb. Leaves lobed or coarsely toothed. 



c. Lobing irregular, some leaves lobed and some not, often a sinus on 

 one side and not on the other. 

 d. Leaves very rough, fruit a compound berry. 



[Broussonetia papyrifera]^ 

 dd. Leaves glabrous, fruit a cluster of stalked berries. Sassafras, p. 459 

 cc. Lobing on both sides of each leaf and more or less symmetrical. 



d. Truncate at the end (mid vein terminating at the bottom of a 

 sinus not at the extremity of a lobe). Liriodendron, p. 448 



dd. Leaf more or less star-shaped, with 3-5 acute lobes, lowei 

 pair often much smaller than the others. 



e. Margin finely and regularly serrate. Liquidambar, p. 474 

 ee. Margin irregularly serrate. 



/. Flowers reddish crimson, appearing before the leaves. 



Acer, p. S43 

 //. Flowers appearing after the leaves are expanded, 

 small, white, in dense cymes. Viburnum, p. 708 



ddd. Leaf with three short obtuse lobes, irregularly crenate. 



e. Flowers white, in umbels. Opulaster, p. 477 



e.e. Flowers greenish solitary. Ribes, p. 473 



dddd. Leaf lanceolate, pinnatifid; low, sweet-scented shrub, stami- 



nate flowers in catkins. Comptonia, p. 396 



ddddd. Leaves with several obtuse or acute lobes on each side, fruit 



an acorn, staminate flowers in catkins. Quercus, p. 404 



dddddd. Leaves triangular, narrowed at the base, coarsely toothed at 



the end, seeds with long white down. Coastal. 



Baccharis, p. yS/^ 

 bbb. Leaves not lobed. 

 c. Entire. 



d. Reniform orbicular. 



e. Flowers large, bell-shaped, white, spotted within, fruit a 

 cylindrical pod. [Catalpa bignonioides]t 



ee. Flowers pink, papilionaceous, pot flat. Cercis canadensis, p. 493 

 dd. Ovate. 



e. Opposite. 



/. Flowers white in terminal cymes, petals short. 



g. Petals 4. Cornus, p. 601 



* Ailanthus Tree introduced from Asia and frequently escaping. 

 t Paper Mulberry escaped in some places. 

 % Catalpa Tree, escaped from cultivation. 



