THE FLORA OF SCOTT AND MUSCATINE COUNTIES. 253 



ARISTOLOCHIACEiE. 



Asarum, Tourn. 



699. A. Canadense, L. Wild Ginger. 

 Rich woods ; not rare. 



Aristolochia, Tourn. 



700. A. Serpentaria, L. Virginia Snakeroot. 

 Woodlands, Wyoming Hill, T'w'p. Seventy-six; rare. 



SANTALACEiE. 



Comandra, Nutt. 



701. C. umbellata, Nutt. Bastard Toad-flax. 

 Dry grounds ; frequent. 



EUPHORBIACE^E. 



Euphorbia, L. Spurge. 



702. E. Geycri, Engelni. 



Common in sandy soil near Cedar River. 



703. E. glyptosperma, Engelm. 



Sandy soil; frequent near Cedar River. 



704. E. maculata, L. 

 Waste places; common. 



705. E. Prcslii, Guss. 

 Waste places ; common. 



706. E. hexagona, Nutt. 



Sandy soil, Cedar River region. 



707. E. marginata, Pursh. 



Escaped ; streets of Davenport and Muscatine. 

 70S. E. c or 1 lata, L. 



Fields and waste places ; common. 



709. E. de nt a/a, Michx. 

 Sandy soil, Fruitland. 



710. E. heterophylla, L. 



Sandy soil along rivers ; frequent. 



711. E. dictyospertna, Fischer & Meyer. 

 Sandy soil along rivers ; infrequent. 



712. E. Cyparissias, L. 



Escaped from gardens ; frequent. 



