IOWA ACADEMY OF SCIENCES. 245 



CUCUKBITACE.'E. 



MiCKAMPELis liaf. Wild Balsam-apple. 



506. M. lohata (Michx.) Greene. {Echi)wc>jstis lohata 



Torr & Gray.) Common in woods and along 

 streams, climbing over low bushes. 



campanulace.-e. 



Campanula L. 



507. C. aparinoiih's Pursh. Marsh Belltlower. Frequent 



in marshes. 



508. C. americana L. Tall Bellflower. Frequent in 



low woods. 



Lobelia L. 



509. L. sijphilitica L. Great Lobelia. Common on 



low prairies. 



510. />. spirata hirfella A. Gray. Very common on 



low prairies. 



CICHORIACE^. 



Taraxacum Hall. 



511. T. taraxacum (L.) Karst. (T. dens-leonis Desf.; 



T. o[firin(de Weber.) Common, but probably 

 introduced. 



SONOHUS L. 



512. S. asper (L.) All. Streets of Armstrong; adven- 



tive from Europe. 

 Lactuca L. 



513. L. acariola L. A native of Europe, and but lately 



introduced into our country. 



514. L. ludoviciana (Nutt.) DC. Common on low 



prairies. The pinkish flowers rarely opening. 



515. L. piilcheUa (Pursh) DC. A recent introduction 



from the Northwest. 

 Lygodesmia D. Don. 



516. L.juncea (Pursh.) Don. Frequent on dry knolls. 

 NoTHOcALAis Grccne. 



517. iV. ciispidata (Pursh) Greene. {Troximon cnspida- 



tum Pursh.) Frequent on hillsides, especially 

 near streams. 



