72 NATURE-STUDY REVIEW [14:2— Feb., 1918 



White Oak : young branches not peeling ; large buds. 



Swamp White Oak: young branches scaly. 



Chestnut Oak: bark not flaky, round ridged; cup thin. 



Red Oak : rusty hairs apex bud ; large flat cup ; flat flutings. 



Pin Oak : smooth, continuous trunk ; saucer cup ; low grounds. 



Scarlet Oak : bark gray, red inside; cup conical base. 



Black Oak: bark gray, yellow inside; buds pale, woolly. 



Scrub Oak: shrub; sterile ground; smooth bark; many acorns. 

 Nettle Family 



Slippery Elm : inner bark mucilaginous, rough gray twigs. 



American Elm : drooping branches ; whitish layers of bark. 



Hackberry : drupe; chambered pith; galls; bark ridged, warts. 

 *White Mulberry: many small branches, cut twig milky. 

 *Red Mulberry: darker twigs; dark margined bud-scales. 

 Magnolia Family 



Tulip Tree: fruiting cones; winged seeds; twigs curve up. 

 Laurel Family 



Sassafras; twigs aromatic, green, mucilaginous. 

 Witch Ha/el Family 



Witch Hazel: fruit 2 chambered capsule; flowers in fall. 

 *Sweet Gum: fruit cluster spherical, spiny; corky ridges. 

 Plane Tree Family 



Buttonwood: upper trunk white areas; no terminal bud. 

 Rose Family 



Shad Bush : long narrow buds ; berry -like fruit ; diseased. 



English Hawthorne : unbranched thorns ; drupe-like pome. 



Wild Black Cherry : develops scaly bark ; lenticels lengthened. 

 - Choke Cherry: smooth bark; lenticels do not elongate. 



Wild Red Cherry : many small terminal buds ; recent clearings. 



Pulse Family 



Honey Locust : branched thorns ; smooth buds. 

 Common Locust: paired thorns; downy buds. 

 *Kentucky Coffee Tree : narrow ridged bark ; stout twigs. 

 *Redbud ; shrub ; flower buds on old growth ; ornamental. 

 Quassia Family 



*Ailanthus : seed in centre of wing ; solitary buds. 

 Cashew Family 



Staghorn Sumach: velvet hairs; red berries. 



