URTICACEAE (NETTLE FAMILY) 



2 BROUSSONETIA PAPER MULBERRY. (B. papyrifera*) 



3 T6XYLON OSAGE ORANGE. ( T. pomifera.) 



4 FICUS INDIA-RUBBER TREE. (F.. eldstica.*) 



5 HUMULUS. 



i a Leaves green ; fruiting cluster with resinous dots 



COMMON HOP. (H. liipulus.) 

 b Leaves often variegated ; fruiting cluster not with resin 



dots JAPANESE HOP. (H. japonicus.*) 



6 CANNABIS HEMP. (C. sativa*) 



3 URTICACEAE. Nettle Family. 



1 URTICASTRUM WOOD NETTLE. (U. divaricatum.) 



2 URT1CA. 



i a Leaves 1-3 in. long, ovate, usually heart-shaped at base 



STINGING NETTLE. (U. dioica.) 

 b Leaves 2-6 in. long, lanceolate, tapering or rounded at 



base SLENDER NETTLE. (U. grdcilis.) 



3 ADICEA RICHWEED. (A. pumila.) 



4 BOEHMERIA FALSE NETTLE. (B. cylindrica.) 



7 PROTEALES. Silk Oak Order, 

 i PROTEACEAE. Silk Oak Family. 

 i GREVILLEA SILK OAK. (G. robusta*) 



8 SANTALALES. Sandalwood Order. 



1 LORANTHACEAE. Mistletoe Family. 



i PHORADfiNDRON. .AMERICAN MISTLETOE. (P. flavescens*) 



2 SANTALACEAE. Sandalwood Family. 



1 COMANDRA BASTARD TOAD-FLAX. (C. umbelldta.) 



9 ARISTOLOCHIALES. Birthwort Order. 



i ARISTOLOCHIACEAE. Birthwort Family. 

 i . ASARUM WILD GINGER. (A. reftexum.) 



2 ARISTOLftCHIA. 



i a Erect herb; leaves 2-5 in. long 



VIRGINIA SNAKEROOT. (A. serpentaria.) 

 b Twining vine; leaves 6-12 in. broad 



DUTCHMAN'S PIPE. (A. macrophylla*) 



10 POLYGONALES. Buckwheat Order. 

 i POLYGONACEAE. Buckwheat Family. 



1 RHEUM RHUBARB. (R. rhaponticum.*) 



2 RUMEX. 



i a Some leaves with spreading lobes at the base 



FIELD SORREL. (R. acetosella.) 

 b No leaves as in a - 2 



10 145 



