Q. glandulifera. Japan, Korea to W. China. 
Q. glauca. Asia. 
£). Havardi. E. Tex. 
Q. heterophylla ( Q. Phellos x borealis maxima). N. J. to Tex. 
Q. imbricaria. Shingle O.; Pa. to Ga. and Neb. 
Q. Jackiana (£). bicolor x alba). 
Q. lyrata. Overcup O.; N. J. to Fla. and Tex. 
£). macrocarpa. Burr O.; N. S. to Man., and Tex. 
Q. marilandica. Black-Jack O.; N. Y. to Fla. and Tex. 
Q. mongolica. Mongolian O.; China, Korea, Japan. 
Q. m. grosseserrata. Japan, Sakhalin. 
(). montana. Chestnut O.; Me. to Ala. 
Q. Nuttallii. Miss., Mo. to Tex. 
( 5 . palustris. Pin O.; Mass, to Ark. and Wis. 
£). Phellos. Willow O.; N. Y. to Fla. and Tex. 
Q. Prinns. Basket O.; Del. to Fla. and Tex. 
Q. pyrenaica (£). Toza). S. Eu. 
Q. robur. English O.; Eu., N. Afr., W. Asia. 
Q. r. “Concordia.” 
Q. r. fastigiata. 
£). Rudkini (Q. marilandica x Phellos). 
Q. Saulii (Q. montana x alba). 
Q. Schuettei (Q. bicolor x macrocarpa). 
Q. Shumardii Schneckii. Ill. and Ohio to Tex. 
£)• stellata. Post O.; Mass, to Fla. and Tex. 
Q. velutina. Black O.; Me. to Fla. and Tex. 
RHAMNUS, Rhamnaceae. Buckthorn. Spiny or spineless 
shrubs, some of value as hedge plants. The flowers are not 
showy and are followed by small black fruits [iD, 5E, nursery]. 
R. cathartica. Common B.; Eu., Asia. 
R. crenata. Japan and Korea to C. China. 
R. Erythroxylon. Siberia. 
R. fallax. Carniolan B.; S.E. Eu. 
R. Frangula. Alder B.; Eu., W. Asia, N. Afr. 
R. infectoria. Avignon-berry; S. Eu. 
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