Proceeding's of the Ohio State Academy of Science 149 



complete stipular rings. Flowers bisporangiate, large, solitary. 

 Buds covered with conduplicate sheathing stipules. Pith usually 

 diaphragmed but solid. Fruit aggregate, cone-like. 



1. Leaves auriculate, glabrous. Leaf buds glabrous. M. fraseri. 

 1. Leaves rounded or truncate at the base, thin. Leaf buds silky pubes- 

 cent. M. acHiiiiiiafa. 



1. Leaves acute at the base. 2. 



2. Leaves light green beneath, 1-2 ft. long. Leaf buds glabrous. J\I. 



tripetala. 

 2. Leaves glaucous beneath, 3-6 in. long. Leaf buds pubescent. M. 

 z'irginiana. 



1. Magnolia fraseri Walt. Fraser Magnolia. A tree 

 with spreading branches and glabrous leaf buds. Leaves elon- 

 gated-obovate or oblong, auriculate, ^-2 ft. long; flowers white. 

 In mountain woods. Va. and Ky. to Fla. and Miss. 



2. Magnolia tripetala L. Umbrella Mag-nolia. A low- 

 tree with glabrous leaf-buds and irregular branches. Leaves 

 obovate, acute, cuneate at the base, 1-2 ft. long, flowers white, 

 slightly odorous. AVood soft and light. Penn. to Ga., Ark., and 

 Miss. 



3. Magnolia virginiana L. Laurel Magnolia. A tree 

 with pubescent leaf buds. Leaves oval or oblong, acute at the 

 base, 3-6 in. long; flowers white, deliciously fragrant. In 

 swamps. Mass. to Penn., Fla., and Tex. 



4. Magnolia acuminata L. Cucumber Magnolia. A 

 large tree with silky pubescent leaf-buds. Leaves oval, acute or 

 somcAvhat acuminate, rounded or truncate at the base ^-i ft. long; 

 flowers greenish-yellow. Wood soft, light, and durable ; used 

 for cabinet-work, pump-logs, and water-troughs. N. Y. to Ohio 

 and III, Ga., Ala., and Ark. 



33. Liriodendron L. Tuliptree. 



Trees with alternate truncate leaves, diaphragmed but solid 

 pith, and complete stipular rings. Fruit aggregate, cone-like. 



I. Liriodendron tulipifera L. Tuliptree. A very large, 

 magnificent, rapid-growing tree with glabrous leaf-buds. Flowers 

 greenish-yellow, orange-colored within. Buds covered with con- 



