198 OHIO BIOLOGICAL SURVEY 



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



Scioto. 



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



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



1283. Betula nigra L. Kiver 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. Sinooth Alder. Eastern half 



of state, to Lorain, Fairfield and Scioto Counties. 



Juglandaceae. Walnut Family. 



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



General and abundant. 



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



General. 



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



eral, but no speicmens from the west central part. 



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



eral, but no specimens from the extreme eastern and extreme 

 western counties. 



1292. Hieoria laeiniosa (Mx. f.) Sarg. Shellbark (Hickory). Huron, 



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



1293. Hieoria 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, Salicales. 



Salicaceae. Willow Family. 



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



