198 OHIO BIOLOGICAL SUEVEY 



1281. Betiila lenta L. Sweet Birch. Fairfield, Hocking, Adams, 



Scioto. 



1282. Betula lutea Mx. f. Yellow Bircli. Ashtabula, Stark, Summit, 



Lake, Cuyahoga, Lorain, Wayne, Fairfield, Hocking. 



1283. Betula nigra L. River Birch. From Fairfield and Perry Coun- 



ties southward. 



1284. Betula alba L. European White Birch. Escaped in Lake 



County. 



1285. Betula pumila L. Low Birch. Summit, Stark, Wyandot, Cham- 



paign. 



1286. Alnus incana (L.) Willd. Hoary Alder. Cuyahoga, Lake, 



Geauga. 



1287. Alnus rugosa (DuRoi), Spreng. Smooth Alder. Eastern half 



of state, to Lorain, Fairfield and Scioto Counties. 



Juglandaceae. Walnut Family. 



1288. Hicoria cordiformis (Wang.) Britt. Bitternut (Hickory). 



General and abundant. 



1289 Hicoria microcarpa (Nutt.) Britt. Small Pignut (Hickory). 



General. 



1290 Hicoria glaba (Mill.) Britt. Pignut (Hickory.) Rather gen- 



eral, but no speicmens from the west central part. 



1291. Hicoria alba (L.) Britt. Mockernut (Hickory). Rather gen- 



eral, but no specimens from the extreme eastern and extreme 

 western counties. 



1292. Hicoria laciniosa (Mx. f.) Sarg. Shellbark (Hickory). Huron, 



Wyandot, Licking, Franklin, Pickaway, Scioto, Clermont. 



1293. Hicoria ovata (Mill.) Britt. Shagbark (Hickory). General and 



abundant. 



1294. Juglans nigra L. Black Walnut. General and abundant. 



1295. Juglans cinerea L. Butternut. General, but no specimens from 



the northeastern counties. 



Myricaceae. Bayberry Family. 



1296. Comptonia peregrina (L.) Coult. Comptonia. Lake, Erie, Port- 



age, Lucas, Fulton, Wood, Knox. 



Order, Sah'cales. 



Salicaceae. Willow Family. 



1297. Populus alba L. White Poplar. General. Introduced. 



