HOUGH'S AMERICAN WOODS. abcd'e'f 5 



h Persistent, thick, coriaceous; seeds winged. 



LOBLOLLY BAY (Gordonia Lasianthus). 

 h2 Deciduous, membranaceous ; seeds not winged. 



FBANKUNIA (Franklinia Altamaha). 

 Nutlet, 

 g Not winged, each 



h Subtended by a 3-lobed leaf-like bract and arranged in aments; Ivs. 

 unequally and sharply serrate, glabrous bn. except for silky hairs 



in the axils of veins BLUE BEECH (Carpinus Caroliniana) . 



h2 Enclosed in a membranous sac and arranged in loose cone-like aments ; 

 leaves ovate-oblong, unequally and sharply serrate, pubescent bn. 



IRONWOOD (Ostrya Virginiana) . 

 gs Winged both sides and borne in the axils of scales which form a cone; 



scales 

 h 3-lobed, thin and falling away at maturity of seed; 



i Bark chalky white and peeling in strips around the trunk; Ivs. 

 j Ovate, rounded or obtuse b., acuminate a.; bark peeling readily. 



CANOE BIRCH (Betula papyrifera) . 

 j2 Deltoid, long-acuminate, petioles long and slender; bark peeling 



with some difficulty WHITE BIRCH (Betula populifolia) . 



12 Bark smooth, lustrous reddish brown; Ivs. broad ovate. 



WESTERN RED BIRCH (B. fontinalis). 



is Bark scaly, gray-brown; Ivs. ovate-oblong, narrow and rounded or 

 subcordate b., aromatic when bruised. 



SWEET BIRCH (Betula lenta) . 



1* Bark silvery yellow, separating in thin layers and hanging in curls; 

 Ivs. ovate-oblong, narrow and mostly heart shaped b., aromatic. 



YELLOW BIRCH (Betula lutea) . 

 I 5 Bark reddish brown, separating in thin persistent scales; Ivs. rhombic 



ovate RIVER BIRCH ( B. nigra ) . 



h 2 Thickened, woody and persistent; Ivs. 



i Ovate-oblong, mostly acute or acuminate a., lustrous dark green ab.; 



fls. in late summer SEA-SIDE ALDER (Alnus maritima) . 



|2 Orbicular-obovate, rounded to notched a., dull green ab.; fls. in early 



spring EUROPEAN ALDSR ( Alnus glutinosa) . 



Nut. 

 g Enveloped by a 2-4-valved prickle-covered involucre, lateral veins of Ivs. 



straight, parallel, and each terminating in a tooth ; nut 

 h Triangular, each involucre inclosing a pair; Ivs. ovate-oblong, acumi- 

 nate, hairy along veins bn BEECH (Fagus Americana) . 



h2 Globose top-shaped, single in involucre; Ivs. narrow-oblong with 

 slender teeth and white-tomentose bn. 



CHINQUAPIN (Castanea pumila) . 



fa Compressed ovoid-globose, 2 or 3 in an involucre ; Ivs. lance-oblong with 

 coarse teeth, green and glabrous both sides. 



CHESTNUT (Castanea dentata). 

 g2 Subtended by an involucral cup an acorn; Ivs. lance-oblong, obovate, 



coarsely and sharply serrate; 

 h Large trees CHINQUAPIN OAK (Quercus aciinnnata). 



