92 
IOWA ACADEMY OF SCIENCE 
856. Eupatorium altissimum L. Tall Thoroughwort. Common in dry 
soils and on clay banks. 
857. Eupatorium perfoliatum L. Thorougbwort or Boneset. Abundant 
in swamps and marshes. 
858. Eupatorium ageratoides L. f. White Snakeroot. Abundant in 
rich woodlands. 
KUHNIA L. 
859. Kubnia eupat oroides L. False Boneset. Very common in dry 
soils and upon clay banks. 
LIATRIS Schreb. 
860. Liatris squarrosa Willd. Scaly Blazing Star. Common in dry 
soils in open places. 
861. Liatris punctata Hook. Dotted Button Snakeroot. Common in 
dry soils in open places. 
862. Liatris scariosa Willd. Large Button Snakeroot. Common in 
dry open woods. 
863. Liatris pycnostachya Michx. Prairie Button Snakeroot. Com- 
mon in dry soils in open places. 
864. Liatris cylindracea Michx. Cylindric Blazing Star. Scarce in 
high open woods; Curtis. 
GRINDELIA Willd. 
865. Grindelia squarrosa (Pursh) Dunal. Broad-leaved Gum Plant. 
Common in Muscatine County, but rather rare in Johnson 
County, occurring sparsely at Oxford. 
SOLIDAGO L. 
866. Solidago flexicaidis L. Zig-zag Goldenrod. Common in deep rich 
woods. 
867. Solidago kispida Muhl. Hairy Goldenrod. Scarce in rocky wooded 
places as State Quarries, etc. 
868. Solidago spedosa Nutt. Showy Goldenrod. Rather scarce in open 
places. 
869. Solidago spedosa Var. august ata T & G. Slender Showy Golden- 
rod. Much more common in similar places. 
870. Solidago ulmifolia Muhl. Elm-leaved Goldenrod. Common in 
rich woods. 
871. Solidago rugosa Mill. Wrinkle-leaved Goldenrod. Scarce in open 
woods and thickets. 
