118 BOTANY OF LA SALLE COUNTY. 



Order 91. ARISTOLOCHIA CEAE, Birthworts. 



As arum Canaden se. Wild Ging-er. Hillsides. 



Order 94. Thymela ceae. 



Dir ca palus tris. Moosewood. L/eatherwood. Woods. 



Order 97. Santala ceae. Sandalwoods. 



Coman dra umbellata. Fls, in umbels G. W. 6 to 

 ,10 m. 



Order 98. EUPHORBIA CEAE. Euphorbias. 

 Juice milky; leaves generally opposite or in 

 whorls; stamens and pistils separate on different 

 or the same plant. Fls. in a cup-like involucre 

 in umbels. Seeds 3 to 6. at top of a short stem. 

 EUPHOR BIA macula ta. Prostrate, slender, hairy. 



E. humistrata. Procumbent, larger than maculata. 



E. Preslii. Branched, spreading-, 1 to 2 ft. 



E. marg-ina ta. Floral leaves white edg-ed. 



E. corolla ta. Involucre white-fring-ed, showy. 



E. dentata. Erect, hairy, 1 to \% ft. 



E. heterophyl la. Upper leaves red-edg-ed. 



E. obtusa ta. A. Rod warty; 1 to 2 ft. Damp 

 woods. 



E. Cyparis sias. L/eafy; leaves linear, stiff. 6 

 to 10 in. 



E. commuta ta. Umbel 3 rayed; 6 to 12 in. 



Phyl Ian thus Carolinen sis. A. Low, slender. 

 Jh. Croton capita tus. Densely soft-woolly. 



Cro tonop sis linea ris. Silvery-hoary above. 



Acaly pha Virgin ica. Three seeded mercury. 



Ricin us commu nis. Castor Oil plant. 



Order 99. URTICA CEAE. Nettles. 

 MUS fulva. Slippery or Red Elm. 



U. American na. White Elm. 



Cel tis occidenta lis. Sugarberry. Hackberry. 



Can nabis sativa. Hemp. Cult, grounds. 



Hum ulus lup ulus. Hop. 



