STATE GEOLOGIST. 125 



PILE A, Lindl. Richweed. Clear weed. 



P. pumila, Gray. Richweed. Clearweed. 



St. Croix river, Parry; Minneapolis, Simmons; lake Minuetonka(comnaon), Eoberis; 

 Blue Earth couaty, Leiberg; Fergus F.alls, Leonard. South. 



BCEHMERIA, Jacq. False Nettle. 



B. cylindrica, Willd. False Nettle. 

 Lapham. Fergus Falls, jLeonard. Infrequent. 



PARIETARIA, Tourn. Pellitory. 



P. Penusylvauica, Muhl. Pellitory. 



Minneapolis (presenting, besides the type, a larger and much branched form), Ber- 

 rick, Simmons; Blue Earth county, Leiherg; and northwest to the uppjr Missouri and 

 Saskatchewan rivers. Infrequent. South and west. 



CAN"NABIS, Tourn. Hemp. 



C. sativa, L. Hemp. 



A common or frequent weed. 



HUMULUS, L. Hop. 



H. liUpulus, L. Common Hop. 



Common, especially northward; "native on all the tributaries of the upper Missis- 

 ippi," Parry. 



PLATANACEtE. Plane-tree Family. 



PL/ATANUS, Tourn. Plane-tree. Buttonwood. 



P. occidentalis, L. American Plane-tree. Buttonwood. Sycamore. 



Lapham. Southeast, rare. The northwest limit of this species scarcely enters 

 Minnesota. 



JUGLANDACE^. Walnut Family. 



JUGLANS, L. Walnut. 



J. ciiierea, L, Butternut. Oil-nut. "White Walnut. 



Common southward, but absent far southwest ; extending north to the Snake river 

 in Pine and Kanabec counties, Norwood, Upham, and on the Mississippi river to the 

 north line of Aitkin county, Garrison. Wood valuable for cabinet work and in house- 

 building for inside finishing 



J. nigra, L. Black Walnut. 



Frequent in the south part of the state ; extending north to Nininger, Dakota 

 county, southern Scott and Carver counties, and to "Walnut Grove in the south edge of 

 Kedwood county. Because of the great value of its lumber, nearly all the black wal- 

 nut of large size in this state has been cut ; but much of young growth remains. 



CARYA, Nutt. Hickory. 



C. alba,Nutt. Shell-bark or Shag-bark Hickory. "Walnut." 



Common, or frequent, in Houston county; extending north into Winona county at 



