BIRCH FAMILY, Betulaceae 



Trees with thin finely-toothed leaves and slender 

 twigs. Flowers in catkins. 



33. Hop Hornbeam, Ironwood, Ostryavirginiana. 

 Leaves 3-5 in. long. The only tree whose fruit resembles 

 hops. (G.) 



34. American Hornbeam, Blue Beech, Carpinus 

 carolimana. Leaves 2-4 in. long. Bark bluish gray. Fruit 

 a loose cluster of nuts, each protected by a small arrow- 

 head leaf. (G.) 



35. Black Birch, Betula lenta. Leaves 3-4 in. long. 

 Reddish bark and twigs with wintergreen taste. (S. C.) 



36. Yellow Birch, Betula lutea. Leaves 3-5 in. long. 

 The twigs have a wintergreen taste, but the bark of the 

 trunk is dirty yellow covered with shaggy curls. (N. E.) 



37. River Birch, Red Birch, Betula nigra. Leaves 

 1 J-2-3 in. long. This tree resembles the Black Birch in 

 the color of its bark, which is greenish brown, and the 

 Yellow Birch in the ragged papery bark of the trunk, 

 but its twigs are without the wintergreen taste. (S. C.) 



38. Gray Birch, Betula popalifolia. Leaves 2 l / 2 -2t in. 

 long, triangular, tapering tip. Bark white, but not pa- 

 pery. Not reported for Ohio, but is found in Pennsyl- 

 vania and northern Indiana. 



39. Cut-Leaved Birch, Betula pendula dalecarlica. 

 Leaves \-2 l / 2 in. long, deeply cut. Trunk white, branches 

 drooping. (I.) 



40. American Canoe Birch, Betula alba papyrifera. 

 Leaves 2^4-4^ in. long, larger than those of other 

 birches. Bark of trunk creamy white, papery. Branches 

 not drooping. Not reported for Ohio, but occurs in 

 Pennsylvania and northern Indiana. 



HEATH FAMILY Ericaceae 



41. Sourwood, Oxydendrum arboreum. Leaves 

 4-7 in. long, sour. Flowers and seed pods about the 

 size of and in clusters like those of Lily-of-the-Valley. 



LINDEN FAMILY, Tihaceae 



Leaves unevenly heart-shaped. Fruit like cherry 



stones, attached by a stalk to a wing 



42. Basswood, Linden, Tilia americana. Leaves 

 5-6 in. long. Leaves are smooth, but not silvery be- 

 neath. (G.) 



43. White Basswood, Tilia heterophylla. Leaves 

 6-7 in. long. May be known by its silvery white leaf, 

 woolly beneath. (S.) 



EBONY FAMILY, Ebenaceae 



44. Persimmon, Diospyros virglniana. Leaves 4-6 

 in. long. By the fruit you may know it; plum-like, 

 puckery when green, yellow when ripe, sweet when frost- 

 bitten. (S.) 



10 



