CORYLUS— CARPINUS 243 



the margins, finely pubescent and with scattered glandular bristles ; nut 

 compressed, light brown and mostly striate, 1-1.5 cm. long: ameri- 

 c a n a, American. 



In thickets, on hillsides etc., common and in places abundant through- 

 out the state. Distributed from Maine and Ontario to Manitoba, south to 

 Fla. and Kan. Flowers in March and April, fruit ripe in July and Sept. 



Corylus rostrata Alton 1789 Beaked Hazel-nut 



A shrub, 2-4 m. high, steins 2-5 cm. in diameter, bark gray, with 

 scattered lenticels, leaves ovate or oval, cordate or obtuse at the base, 

 acuminate at the apex, sharply and somewhat irregularly serrate, or 

 slightly lobed, glabrous above, or with a few scattered hairs, pubescent at 

 least along the veins beneath, 5-13 cm. long, 3.5-8 cm. wide, occasionally 

 larger, petiole about 1 cm. long; involucral bracts united into a beak, 

 lacerate at the end, 3-4 cm. long beyond the nut, bristly hairy; nut ovoid, 

 slightly compressed and striate, 10-12 mm. long: rostrata, furnished 

 with beak like the prow of a vessel. 



In woods and thickets, common northward, especially north of Lake 

 Superior, where the bushes reach a height of 4-5 m., rare and local south- 

 ward, extending southwest to Douglas County, and southeast to Houston 

 County. Distributed from Quebec to British Columbia, south to Del., 

 Ga., Mich., Mo. and westward. Blossoms in April and May, fruit ripe 

 in August and September. 



Carpinus L i 11 n e 1753 Hornbeam 

 (Latin name for the hornbeam) 



Trees and shrubs with smooth gray bark, stems ridged ; leaves with 

 straight veins, ending in the primary teeth; flowers in catkins, staminate 

 catkins from lateral, short branches, cylindric, about 4-6 cm. long, one 

 staminate flower to each bract, stamens 3-12; pistillate flowers in short 

 terminal catkins, 2 flowers to each bract, each subtended by a bractlet 

 which is persistent, enlarges and becomes a 3 -lobed wing at maturity, 

 stigmas 2, awl-shaped; fruit a nut, ovoid, several-nerved, situated at the 

 base of the bractlet. 



A genus of about 12 species, natives of the northern hemisphere, only 

 one species is native to America. 



