MARYLAXD GEOLOGICAL SURVEY 217 



13. Beech Fagus atropunicea (Marsh) Sudw. 



14. Chinquapin Castanea pumila (Linne) MilL 



15. Chestnut Castanea dentata (Marsh) Borkh. 



16. White Oak Quercus alba Linne. 



17. Post Oak Quercus minor (Marsh) Sargent. 



18. Chestnut Oak Quercus prinus Linne. 



19. Cow Oak Quercus michauxii Nutt. 



20. Red Oak Quercus rubra Linne. 



21. Scarlet Oak Quercus coccinea Muench. 



22. Yellow Oak Quercus velutina Lam. 



23. Spanish Oak Quercus digitata (Marsh) Sudw. 



24. Pin Oak Quercus palustris Muench. 



25. Black Jack Quercus marilandica Muench. 



26. Willow Oak Quercus phellos Linng. 



27. Slippery Elm Ulmus pubescens Walt. 



28. White Elm XJhiuis americana Linne. 



29. Hackberry , Celtis occidentalis Linne. 



30. Red Mulberry Morus rubra Linn§. 



31. Sweet Magnolia Magnolia glauca Linne. 



32. Yellow Poplar Liriodendron tnlipifera Linne. 



33. Papaw Asimina triloba (Linne) Dunal. 



34. Sassafras Sassafras sassafras (Linne) Karst. 



35. Witch Hazel Hamamelis virginiana Linne. 



36. Red Gum Liquidambar styracifliia Linne. 



37. Sycamore Platanus occidentalis Linne. 



38. Cockspur Thorn Crataegus crus-galli Linne. 



39. Scarlet Haw Crataegus coccinea Linne. 



40. Black Cherry Prunus serotina Ehrh. 



41. Red Bud Cercis canadensis Linne. 



42. Locust Itobinia pseudacacia Linne. 



43. Staghorn Sumach Rhus Mrta (Linne) Sudw. 



44. American Holly Hex opaca Ait. 



45. Red Maple Acer rubrum Linne. 



46. Flowering Dogwood Cornus florida Linng. 



47. Black Gum Nyssa sylvatica Marsh. 



48. Mountain Laurel Kalmia latifolia Linne. 



49. Persimmon Diospyros virginiana Linn6. 



50. White Ash Fraxinus americana Linne. 



51. Red Ash Fraxinus pennsylvanica Marsh. 



52. Nannyberry Viburnum prunifolium Linne. 



The principal commercial trees of the county are the oaks, pines, hick- 

 ories, ashes, chestnut, yellow poplar, and cypress. The white and Spanisli 

 oaks, scrub and loblolly pines, hickory, and chestnut predominate and 

 occupy the upper slopes, while the ash, yellow poplar, and cypress are 



