76 Forest Club Annual 



inch, light brown, bud scales with 

 rounded apex. 



*Ulmus Linn. 



ki. Buds broadly ovate obtuse dark 

 brown, outer scales with rusty 

 brown hairs, next scales within 

 covered with thick rusty tomentum, 

 buds one-fourth inch long, oval 

 leaf-scars, twig light grayish or 

 brownish slightly roughened, be- 

 coming darker second year, bundle- 

 scars three, tip-scar not prominent. 

 U. pubescens Walt. 



k2. Buds ovate acute slightly flattened 

 one-eighth inch long, scales gla- 

 brous bright chestnut brown, leaf- 

 scars oval or semi-orbicular, bun- 

 dle-scars three rarely four, twig 

 reddish brown. 



U. anicricana Linn. 



k$. Buds ovate one-fourth inch long, 

 scales brown slightly pubescent, 

 margin ciliate with soft white 

 hairs, bundle-scars four to six in 

 rather irregular line, leaf-scars 

 orbicular or semi-orbicular or 

 triangular, twig light brown gla- 

 brous or minutely pubescent. 



U. racemosa Thomas. 



J2. Bundle-scars three raised slightly 

 above surface of very small lunate 

 leaf-scar, stipule-scars minute, twigs 

 one-sixteenth inch rarely larger, buds 

 about one-fourth inch long, bud- 

 scales light brown with obtuse apex, 

 twigs red-brown lustrous becoming 

 when about one-half inch diameter 

 dull brown. 



** Ostrya virginiana (Mill.) Koch, 

 cj. Stipule-scars none. 



di. Bud-scales felty, bundle-scars many scattered, pith 

 angled, twigs very tough, terminal buds broadly 



*Compare Carpinus, Ostrya, and Prunus. 

 **Compare Carpinus caroliniana and Ultnus ainericana. 



