Procecdiii^s of the Ohio State Academy of Science 165 



Cclastraceae. Stafftree Family. 



55. Euonymus L. Wahoo. 



Shrubs or small trees with opposite leaves and 3-5-locular 

 capsules. Seeds enclosed in a red aril. 



1. Flowers purple; cymes 6-15-flowered ; winter buds long-pointed with 



long bud scales. E. atropurpureiis. 

 1. Flowers greenish yellow; cymes 3-7-flowered ; winter buds very 



short pointed with short bud scales. E. ew'opaeus. 



1. Euonymus atropurpureus Jacq. Wahoo. A high 

 shrub or small tree with green, obtusely 4-angled twigs. Leaves 

 dark red and fruit very ornamental in autumn. Self-prunes small 

 twigs by basal joints. Ont. to Fla., Mont., Okl., and Ohio. 



2. Euonymus europaeus L. Spindletree. A shrub or 

 small tree resembling the preceding. Self-prunes twigs. Culti- 

 vated from Europe. Escaped. N. H.. N. Y., and N. J. 



Staphyleaccae. Bladdernut Family. 

 56. Staphylea L. Bladdernut. 



Shrubs sometimes tree-like with opposite compound leaves 

 and bladdery capsules. 



I. Staphylea trifolia L. American Bladdernut. A shrub 

 or rarely small tree with smooth striped bark. In moist soil. 

 Quebec to Alinn., S. Car., Kan., and Ohio. 



Aceraceae. Maple Family. 

 57. Acer L. Maple. 

 Trees or shrubs with opposite leaves and with watery often 

 saccharine, or sometimes milky sap. Fruit a 2-winged samara. 



1. Leaves pinnate or trifoliate; twigs green, glaucous. A. negundo. 



1. Leaves simple. 2. 



2. Leaves with very large teeth or lobes, the divisions not serrate or 



serrate-dentate. 3. 



2. Leaves with the large divisions or lobes serrate or serrate-dentate. 5. 



3. Leaves with stipules which are often large and foliaceous ; leaves 



green and pubescent beneath at least on the veins ; flowers corym- 

 bose, unfolding with the leaves ; wings of fruit diverging a little 

 less than a right angle. A. nigrum. 



