236 
IOWA ACADEMY OF SCIENCES. 
Xanthium. 
614 X. canadense Mill. Moist fields and along streams; 
abundant. 
COMPOSITE. 
Vernonia. 
615. V . fasciciilata Michx. Damp ground; abundant. 
Eupatorium. 
616. E, rnacidatum L. Bogs and wet meadows; com- 
mon. 
617. E. pu7'pii7^eum h. Moist woods; common. 
618. E. altissimuTfi L. Dry, open ground; common. 
619. E. pe7foliatu7n L. Wet ground; abundant. 
620. E. ageratoides L. f. Woods; abundant. 
Kuhnia. 
621. K. eiipatorioides L. Dry, open ground; abundant 
Lacinaria. 
622. L. cylmdracea (Michx.) Kuntze. {Liatris cylindra- 
cea Michx. j Dry, open ground; common. 
623. L. (Michx.) Kuntze. {Liatris pycnos- 
tachya Michx.) Moist meadows; common. 
624. L. scariosa (L.) Hill. {Liatins scariosa Willd.) 
Dry prairies. Common. 
Grindelia. 
625. G. (Pursh.) Dunal. Dry hills; scarce. 
SoLIDAGO. 
626. S. flexicaulis h. {S. latifoliah.) Stony banks in 
woods; common. 
627. S. rigidiuscula {T , 8L.G.)Vovt. {S.speciosa angitstata 
Gray.) Dry, open ground; frequent. 
628. S. ulmifolia Muhl. Common in woods. 
629. S. serotma Ait. Moist or sometimes dry ground; 
abundant. 
630. S. serotina giganfea . Thickets; scarce. 
631. S , 77^issourie7^s^s^\xtt. Dry, open ground; frequent; 
632. S. gattmger Chapm. On dry river bank near Iowa 
Falls.' 
