186 IOWA ACADEMY OF SCIENCES. 



CORNACE.E. 



Cornus asperlfolia Mx. Taylor, Fremont, Montgomery, and 

 Pottawattamie counties; thickets; common. 



(J. sericea L. Adams county; low places; common. 



0. paniculata L ' Her. Ringgold and Pottawattamie counties. 



C. alternifolia L. Johnson county; one shrub, from which 

 several specimens were collected, is known. 

 Caprifoliacete. 



Sambucus canadensw L. Clarke, Union, Adams, Montgom- 

 ery, Pottawattamie, Ringgold, Taylor, Page, and Fremont 

 counties. Low grounds; common. 



Ylbuniuin jmbescens Pursh. Decatur county. Upland thick- 

 ets; frequent locally. 



V. lentago L. Union and Decatur counties. Low ground, 

 along streams; frequent. 



V. pi'^'iiifo^ii'iif L- Johnson county. Low grounds; infre- 

 quent. 



T'. dentatwn L. Johnson county. Wooded ravines; infre- 

 quent. 



Triosteum. perfollatiun L. Union, Adams, Pottawattamie, 

 Ringgold, and Page counties. Woods; common. 



Symphoricarpos vulgaris Mx. Clarke, Union, Adams, Mont- 

 gomery, Pottawattamie, Lucas, Monroe, Ringgold, Taylor, 

 Page, and Fremont counties. Upland woods and prairies; 

 common. 



S. occideiitd/is Hook. Fremont and Pottawattamie counties. 

 Base of loess hills; common. 



Lonicera sulUvantll Gray. Fremont county. Woods; a few 

 collected. 



RUBIACE^. 



Houstonia angmtifoUa Mx. Taylor and Fremont counties. 

 Prairies and loess hills; common. 



Galium concinmoii T. & G. Union and Page counties. 

 Woods; common. 



G. circcezans Mx. Fremont and Pottawattamie counties. 

 Woods; common. 



COMPOSIT.^.. 



Vernonia. noveboracensis latifolia Gray. Ringgold county. 

 Pastures; common. 



Eupatorium purpmreum L. Ringgold, Page, and Pottawat- 

 tamie counties. Woods; common. 



