PLANTS COMMONLY OR BADLY INFESTED. 37 
Crataegus sp. Hawthorn. Britton, Conn.; Lintner, Felt, N.Y.; Alwood,Va. ; Smith, 
N. J. 
Crataegus cordata Soland. Koehler, Conn. 
Crataegus oxyocantha Linn. English hawthorn. Britton, Koehler, Conn. 
Crataegus coccinea Linn. Koehler, Conn. 
Crataegus crus-galli Linn. Koehler, Conn. 
Cydonia vulgaris Pers. Common quince. Britton, Conn. ; Lintner, N. Y. ; Alwood, 
Va. 
Cydonia japonica Pers. Japanese or flowering quince. Britton, Koehler, Conn. ; 
Lintner, N. Y. ; Alwood, Va. ; Johnson, Md. 
Fagus sylvaiica Linn. var. purpurea Ait. European purple-leaved beech. Smith, 
N. J. " 
Juglans sieboldianu Maxim. Japanese walnut. , Britton, Conn. ; Alwood, Va. ; Sher- 
man, N. C; Smith, N. J. 
Ligustrum vulgar e Linn. Common privet. Alwood, Va. 
Populus sp. Poplar. Britton, Conn. ; Smith, N. J. ; Sanderson, Del. ; Felt, N. Y. 
Populus dtltoides Marsh. Carolina poplar. Britton, Conn.; Rolfs & Quaintance, 
Fla. ; Alwood, Va. 
Populus'nigra Linn. var. italica Du Roi. Lombardy poplar. Britton, Koehler, Conn.; 
Rolfs & Quaintance, Fla. ; Alwood, Va. 
Prunus amygdalus Stokes. Almond. Lintner, N. Y r . ; Alwood, Va, 
Prunus armeniaca Linn. Apricot, Lintner, Felt, N. Y. ; Alwood, Va.; Smith, N.J. 
Prunus avium Linn. Sweet cherry. Britton, Conn.; Lintner, Felt, N. Y. ; Alwood, 
Va.; Smith* N. J.; Cockerell, N. Mex. 
Prunus pumila Linn. Koehler, Conn. 
Prunus pumila var. besseyi Waugh. Sand cherry. Alwood, Va. 
Prunus cerasifera Ehrh., var. atropurpurea Dipp. (P. pissardi). Purple-leaved plum. 
Britton, Conn. ; Felt, N. Y. 
Prunus domestica Linn. European plum. Britton, Conn.; Alwood, Va. 
Prunus hortulana Bailey. Wild goose plum. Alwood, Va. 
Prunus japonica Thunb. Flowering almond. Britton, Conn.; Felt, N. Y. 
Prunus maritima Waugh. Beach plum. Koehler, Britton, Conn. 
Prunus per sica Sieb. & Zucc. Peach. Britton, Koehler, Conn.; Lintner, Felt, 
N. Y. ; Alwood, Va. ; Cockerell, N. Mex. 
Prunus trifiora Roxbg. Japanese plum. Britton, Koehler, Conn. ; Alwood, Va. 
Prunus serotina Ehrh. Koehler, Conn. 
Prunus virginiana Linn. Choke cherry. Koehler, Conn. 
Ptelea trifoliata Linn. Hop tree. Fernald, Mass. 
Pyrus communis Linn. Pear. Britton, Koehler, Conn.; Lintner, Felt, N. Y. ; 
Alwood, Va. ; Cockerell, N. Mex. 
Pyrus sinensis Lindl. Sand pear, including Kieffer. Alwood, Va. 
Pyrus baccata Linn. Koehler, Conn. 
Pyrus malus Linn. Apple. Britton, Koehler, Conn.; Lintner, Felt, N. Y. ; Alwood, 
Va. ; Doten, Nev. ; Cockerell, N. Mex. 
Pyrus sp. Crab apple. Britton, Conn. 
Ribes oxyacanthoides Linn. Gooseberry. Britton, Conn.: Lintner, Felt, N. Y. ; 
Alwood, Va. ; Troop, Ind. 
Ribes aureum Pursh. Missouri or flowering currant. Lintner, N. Y. 
Pibes rubrum Linn. Currant. Britton, Conn. ; Lintner, Felt, N. Y. 
Pibes nigrum Linn. Black currant. Alwood, Va. 
.Rosa sp. Britton, Conn.; Lintner, N. Y. ; Alwood, Va.; Cockerell, N. Mex.; Bur- 
gess, Ohio; Troop, Ind.; Gould, Md.; Scott, Ga. 
Rosa Carolina Linn. Koehler, Conn. 
Rosa lucida Ehrh. Koehler, Conn. 
