NINETEENTH ANNUAL MEETING. 105 



36. F. qiiaclrangulata,Mx.; Blue Ash. A large tree; wood heavy, hard, not strong, 

 brittle; Ifts. 7-9, ovate-oblong to iMiceolate, sharply serrate, 3^ or 4^ long, 

 fr. l''-2' long, with a wing-margined body. 



(Order BignoniaciE.) 

 24. Catalpa. 

 87. C. bignonioicles, Walter; Catalpa, Bean Tree. Lvs. cordate, pointed, downy be- 

 neath, disagreeable (almost fetid ) when touched; fls. showy, white, tinged 

 with violet, dotted in the throat with yellow and purple, lower lobe of corolla 

 entire; pod 8''-10'' long, 9-12 lines in circumference, width of seeds 24-3 lines. 



38. C. speciosa. Warder; Western Catalpa. Lvs. truncate or subcordate at base, 



slenderly acuminate, soft downy beneath, inodorous; flowers larger than in 

 the preceding, but lower lobe of corolla deeply notched or bi-lobed; pod terete, 

 8''-20'' long and 17-20 lines in circumference, width of seeds 3^-4 lines. 



( Order Lauraceie.) 

 25. Sassafras. 



39. S. officinale, Nees.; Sassafras. Tree 15°-50° high, twigs yellowish green; lvs. 



ovate entire, or some of them 3-lobed, bark spicy; twigs and foliage muci- 

 laginous. 



( Order Urticacere.) 



26. Ulmus. Elm. 

 Lvs. very rough above (40.) 

 Lvs. smooth above, or nearly so (a.) 



a. Branches corky-winged; lvs. V-2y long (42.) 



a. Branches not corky; lvs. 2''-4'' long (41.) 



40. U. fulva, Mx.; Red Elm, Slippery Elm. Tree 40°-60° high; wood heavy, hard, 



strong, close-grained, reddish, inner bark mucilaginous; buds soft, downy, 

 with rusty hairs; lvs. 4'-8^ long, very rough above; fruit not ciliate. 



41. U. Amencana, L.; White Elm, American Elm, Water Elm. A large tree; 



wood hard, strong, tough, rather coarse-grained, branches not corky; lvs. 

 2''-4'' long, abruptly pointed, pubescent, or soon glabrous beneath; branchlets 

 drooping. Fls. in fascicles; fruit fringed-ciliate, otherwise glabrous. 



42. U. alata, M.X.; Winged Elm, Wahoo. A small tree (about 20°-40° high,) wood 



hard, not strong, very close-grained. Branchlets nearly glabrous, some of 

 them corky-winged; lvs. l''-25'' long, acute, downy beneath; fls. in racemes; 

 fr. fringed-ciliate, downy on the face (when young.) 



27. Celtis. Hackbebby. 



43. C. occidentalis, L.; Hackberry, Sugar Berry, Nettle Tree. Tree 50°-70° high; bark 



rough, the furrows discontinuous; wood rather soft, coarse-grained; lvs. ovate, 

 cordate-ovate and ovate-lanceolate, reticulated, veinlets prominent; fls. appear- 

 ing with the lvs.; fr. edible. 



28. MOBUS. MULBEBEY. 



44. M. rubra, Jj.; Red Mulberry. A large tree; wood light, soft, rather tough, coarse- 



grained; lvs. heart-shaped, serrate, rough above, lobed on young shoots; fr. 

 blackberry-like. 



29. Macluea. Osage Oeange. 



45. M.aurantiaca, Nutt; Osage Orange, Bois d'Arc. A tree 25°-60° high; wood 



heavy, very hard and strong; lvs. shining above, obscurely denticulate; spines 

 stout, axillary; fr. orange-like in appearance. 



