244 UNITED STATES. 



8. q. cinerea, upland willow oak. 



9. q. imbricaria, shingle willow oak. 

 10. q. laurifolia, swamp willow oak. 



var. obtusifolia. 



Division II, 



Leaves short lobed. 

 Sp» 11. q. aquatica, water oak. 



12. q. nigra, black oak. 



13. q. tinctoria, var. 1. angulosa, great black 



oak, or Champlain black oak. 

 2. sinuosa, quercitron oak. 



14. q. triloba, downy black oak. 



Division III. 



Leaves deeply sinuated. 

 Sp. IS* q. banisteri, running downy oak, 



16. q. falcata, downy red oak. 



17. q. catesbcei, sandy red oak. 



18. q. coccinea, scarlet oak. 



19. q, palustris, swamp red oak. 



20. q. rubra, red oak. 



1st. Quercus Obtusiloba* Upland white oak, 

 iron oak. 



2d. Alha^ or common American white oak of 

 Marshall.* 



Height about \7 metres (54 feet), straight trunk, 

 whitish bark, regular ramification. Leaves woolly 

 underneath, grey or earthy colour underneath, com- 



• See his Arbustrum Americanum, Philadelphia, Crukshanfe, 

 X784, 8vo. 



