~20 
I. 
78 
REPORT ON THE TIMBERS OF GRAYSON 
ORDER RUTACEA—RUEWORTS. 
Genus Xanthoxylum. 
Prickley ash, Xanthoxylum americanum (L.) 
ORDER BIGNONACE2Z—TRUMPET FLOWERS. 
Genus Catalpa. 
Catalpa, Catalpa bignonioides (Walt.) 
ORDER MAGNOLIACEZ. 
Genus Liriodendron. 
Tulip tree (erroneously called yellow poplar), Lirio- 
dendron tulipfera (L.) 
ORDER BERBERIDACE&. 
Genus Berberts. 
Berberry, Berberis vulgaris (L). 
ORDER ANONACEZ. 
Genus Asimina. 
Common papau, Asimina triloba (Dunal). 
ORDER HAMAMELACEZ—WITCH HAZELWORTS. 
Genus Liguidambar. 
Sweet gum, Liquidambar styraciflua (L.) 
ORDER EBENACEZ. 
Genus Dyospyros. 
Persimmon, Dyospyros virginiana (L.) 
ORDER ERICACEZ. 
Genus Oxydendrum. 
Sorrel tree, Oxydendrum arboreum (D. eS 
ORDER CAPRIFOLIACEA. 
Genus Sambucus. 
Pith elder, Sambucus canadensis (L.) 
Genus Viburnum. 
Black haw, Viburnum prunifolium (L.) 
ORDER CALYCANTHACEZ. 
Genus Calycanthus. 
Sweet shrub, Calycanthus floridus (L.) 
