BOTANY OF LA SAL,L,E COUNTY. 61 



C. or Y., appearing- before the leaves; 40 to 70 

 ft. Wet lands, wood white, soft branches, mak- 

 ing- an acute angle with trunk, and often split- 

 ting- off. 

 NEGUNDO. Box Elder. Ash-leaved Maple. 



N. aceroides. Leaves pinnate, of 5 to 7 ovate, 

 acute leaflets, brig-ht G. above. Branches 

 crooked, tree wanting- the symmetry and grace 

 of the maple. Wood of little value. A, rapid 

 grower and g-ood shade tree. 



STAPHYLEA. Bladder Nut. Fruit a 3 to 4 angled 

 sac containing- 3 or 4 hard, grayish round seeds 

 the size of very small peas. 



S. trifolia. Leaves of 3 ovate, acute, smooth leaf- 

 lets; flowers W., delicate; M. 8 to 15 ft. Bark 

 beautifully mottled. A handsome shrub. Bluffs. 



Order 30. ANACARDA CEAE. SUMACS. 



Leaves compound; flowers G. W. clustered. 

 RIIUS. Sumac. Flowers in a dense, terminal panicle, 

 fruit a crimson, hairy, sour berry, not poisonous. 



R. typhina. Stag-horn Sumac. Branches anjl leaf- 

 stalks densely hairy; leaves of 11 to 31 oblong-- 

 lanceolate, acute, serrate, pale beneath leaflets; 

 10 to 30 ft. Ju. Hillsides. Wood a fine Or. 

 color. 



R. g-labra. Smooth; leaves whitened beneath; 2 

 to 12 ft. Ju. J. Borders of woods. 



R. venneata. Poison sumac, smooth; leaflets 7 to 

 13 obovate-oblong- entire; flowers in small axil- 

 lary, G. Y. clusters; berries g-lobular; grayish. 

 Very poisonous; 6 to 15 ft. Low grounds. 



R. toxicodendron. A woody vine climbing- by root- 

 lets on trees, fence posts and rocks. Leaves of 

 3 rhombic-ovate, acute, entire or notched leaf- 

 lets, dark or lig-ht G, stiff or drooping-. The 



