168 



l.'<>s. R. vciticillatus I,. Swamp Dock. 



Fouiul ;it the edge of Uayoxis and in shallow water. 

 L'<t!>. R. iKirtMiiica L. Creat Water Doc-k. 



Not rare in the lake plain .-iiid in low. Hat places. 

 21<». R. crispus L. Curled I)o<'k. 



('onuuon in waste places. 

 I'll. R. obtnsifoliiis L. T.itter Dock. 



In situations sinulai- to the preceding. 

 1'12. Fagop.vruni fafiop.vnuu (L.) Karst. Buckwheat. <F. (t.sciileiituin 

 Moencb.) 



Along' roadsides Avhere it has escaped. 



213. Polygonum amphil)ium D. AVater Smartweed. 



('omniou at the edges of the lake. 



214. P. emersiun (Michx.) Britton. Swamp Smartweed. (!'. ninhJeiihcnjii 



Watson.) 



Alnmdant in bayous and low i>laces about the lake. 



215. P. incaruatum Ell. Slender Pink Smartweed. ' 



Common iu Avet soil. 

 210. P. pennsylvanicum L. 

 Abundant. 



217. P. hydropiperoides. 



Common, especially in a sliallow pond in the southeastern por- 

 tion of the lake plain. 



218. P. orientale D. I'rince's Feather. 



Escaped cultivation in a tield east of the lake. 



219. P. virginianum L. Virginia Knotweed. 



Rather sparingly found at the edges of Ioav woods. 



220. P. aviculare D. Doorweed. 



Common in yards. 



221. P. erectlun Ij. Erect Knot Grass. 



Not so almndant as the pi'<'ceding. and in nioister places. 



222. P. convolvulus L. lilack Bindw^eed. 



In diy cultivated tields. 



223. P. scandens L. Climbing False lUickwheat. i I'. (Iiniictdiiuii xidiidciis 



Gray.) 



Some in moist ground along Cherry Creek. 



224. P. saggitatum Ij. Arrow-leaved Tear Tluunb. 



In moist soils about the lake. A'ery abundant. 



