MARYLAND GEOLOGICAL SUKVEY 233 



because the amount so used represents a relatively small part of the 

 output. 



List of ]!^ative Tree SrEOiEs. 



CONIIEKS. 



Common Name. Botanical Name. 



1. Scrub Pine Finns virginiana (MilL). 



2. Pitch Pine Finns rigiia (Mill.). 



3. Shortleaf Pine Pinus echinata (Mill.). 



4. Red Cedar Juniperus virginiana (Linne). 



Hardwoods. 



Common Name. Botanical Name. 



5. Butternut Juglans cinerea (Linne). 



6. Black Walnut Juglans nigra (Linne). 



7. Butternut Hickory Hicoria minima (Marsh) Britton. 



8. Mockernut Hickory Hicoria alba (Linne) Britton. 



9. Pignut Hickory Hicoria glabra (Mill.) Britton. 



10. White Willow Salix alba ( Linne ) . 



11. Black Willow Salix nigra ( Marsh ) . 



12. Largetooth Aspen Populus grandidentata (Michx.). 



13. River Birch Betula nigra (Linne). 



14. Sweet Birch Betula lenta (Linne). 



15. Blue Beech Carpinus caroliniana (Walt.). 



16. Beech Fagus atropunicea (Marsh) Sudw. 



17. Chinquapin Castanea pumila (Linne) Mill. 



18. Chestnut Castanea dentata (Marsh) Borkh. 



19. White Oak Quercus alba (Linne). 



20. Post Oak Quercus minor (Marsh) Sargent. 



21. Overcup Oak Quercus hjrata (Walt.). 



22. Chestnut Oak Quercus prisms (Linne). 



23. Swamp White Oak Quercus platanoides (Lam.) Sudw. 



24. Cow Oak Quercus michauxii ( Nutt. ) . 



25. Red Oak Quercus rubra (Linne). 



26. Scarlet Oak Quercus coccinea (Muench). 



27. Black Oak Quercus velutina (Lam.). 



28. Spanish Oak Quercus digitata (Marsh) Sudw. 



29. Pin Oak Quercus palustris (Muench). 



30. Black Jack Oak Quercus marilandica (Muench). 



31. Shingle Oak Quercus imbricaria (Michx.). 



32. Willow Oak Quercus phellos (Linne). 



33. Slippery Elm Ulmus pubescens (Walt.). 



