62 FLORA OF GRAND RAPIUS. 



601. P. littorale Link. 



Freqiu III in \v;isU' places. Au<.:,-Sept. 

 i'OniK'rlv iiicIu(lL'<l in /■'. (iriculitre. 



oUJ. P. Muh!enberi;ii Watson. 



J\ enirnnDn (Michx.) Britton. 

 Swamps; infrequent. Aug.-Sept. 



Miller's Lake; Grand Island; canal Lclwccn Reed's Lake and 

 Fiak Lake; L. S. & M. S, Ry., south of Burton Ave.; along the 

 highway between Sees. 31 and 32, Vergennes. 



503. P. ORiKXTALK L. Princc's Feather. 

 Escaped from gardens; occasional. Aug.-Sept. 



504. P. Pennsylvanicum L. 



Low ground; frequent. Aug.-Sept. 



505. P. PKRsitARiA L. Lady's Thumb. 

 Common. Aug.-Oct. 



506. P. sagiltatum L. Arrow-leaved Tear-thumb. 

 Wet soil; common. Aug.-Sept. 



507. P. scandens L. Climbing False Buckwheat. 

 Fre^iuent in moist thickets. July-Sept. 



508. P. tenue Michx. 



Dry sandy soil; frequent. July- Aug. 



Pine Hill; Lamberton Lake region; Oak Hill Cemetery; bluffs 



along the upper River Road ; Little Bostwick Lake, and elsewhere. 



509. P. Virginianum L. 



Moist woods and thickets; common. Aug.-Sept. 



RUM EX L. Dock. Soerel. ^ 



510. R. AcETOSELLA L. Field or Sheep Sorrel. 

 Fields everywhere. May-Sept. 



A native of Europe and Asia. 



511. R. altissimus Wood. Pale Dock. 

 Low ground; infrequent. Mid- June-July. 



Near the Glue Factory (Prof. C.F.Wheeler); banks of Grand 



