458 The Ohio Naturalist. [Vol. VI, No. 4, 



Subkingdom, ANGIOSPERMAE. 



Class, DICOTYLAE. 

 Subclass, APETALAE. 



Order, Salicales. 



Family, Salicaccae. 



10. Populus alba L. White Poplar. I. 



11. " heterophylla L. Swamp Poplar. 



12. " balsamifera L. Balsam Poplar. 



Also balsamifera candicans (Ait.) Gr. Balm-of-Gilead. 



13. " dilatata Ait. Lombardy Poplar . I. 



14. " deltoides Marsh. Cottonwood. 



15. " grandidentata Mx. Largetooth Aspen. 



16. " tremuloides Mx. American Aspen. 



17. Salix nigra marsh. Black Willow. 



18. " aiTivgdaloides And. Peachleaf Willow. 



19. " lucida Muhl. Shining Willow S. T. 



20. " pentandra L. Bav Willow. I. S. T. 



21. " fragilis L. Crack Willow. I. 



22. " alba L. White Willow. I. 



Also alba vitellina (L.) Koch. 



23. " babvlonica L. Weeping Willow . I. 



24. " fluviatilis Nutt. Sandbar Willow. S. T. 



25. " discolor Muhl. Pussy Willow. S. T. 



Also discolor eriocephala (Mx.) And. 



26. " bebbiana Sarg. Bebb Willow. S. T. 



27. " purpurea L. "^ Purple Willow . I. S. T. 



Order, Juglandales. 



Family, Juglandaceae. 



28. Juglans nigra L. Black Walnut. 



29. " cinerea L. Butternut. 



30. Hicoria minima (Marsh.) Britt. Bitternut (Hickory). 



31. " ovata (Mill.) Britt. Shagbark (Hickory). 



32. " laciniosa (Mx. f.) Sarg. Shellbark (Hickorv). 



33. " alba (L.) Britt. Mockernut (Hickory). 



34. " microcarpa (Nutt.) Britt. Small Pignut (Hickory). 



35. " glabra (Mill.) Britt. Pignut (Hickory). 



Order, Fagales. 

 Family, Bctidaceae. 



36. Carpinus caroliniana Walt. Blue-beech. 



37. Ostrya virginiana (Mill.) Willd. Ho]>hornbeam. 



38. Betula populifolia Marsh. American White Birch. 



39. " nigra L. River Birch. 



40. " lenta L. Sweet Birch. 



41. " lutea Mx. f. Yellow Birch. 



42. Alnus incana (L.) Willd. Hoary Alder. S. T. 



43. " rugosa (DuR.) Koch. Smooth Alder. S. T. 



Family, Fagaceae. 



44. Fagus americana Sw. American Beech. 



45. Castanea dentata (Marsh.) Borkh. Chestnut. 



46. " pumila (L.) Mill. Chinquapin. S. T 



47. Quercus rubra L. Red Oak. 



48. " palustris DuR. Pin Oak. 



49. " schneckii Britt. Schneck's Red Oak. 



50. " coccinea Wang. Scarlet Oak. 



