416 CORYLACEAE 
rar ie flowers with bractlets: pistillate flowers few, in heads: 
t large, in a leaf-like involucre: stamens few. . 3. CORYLUS. 
1. CARPINUS [Tourn.] L. Trees or shrubs, the bark smooth. Stami- 
nate aments usually solitary, with separated spreading bracts. Pistillate aments 
with 3-lobed bracts at e —About 
species, only the following Ameri 
1. C. caroliniana Walt. Shrub, or small 
em. long: 
nut 5-6 ng.— CE r BLUE- 
BEECH. Wee IRONWOOD. )—Moist 
woods, swampy places, along streams, 
various provinces age o Tex., Minn., a 
N. S.—Spr.—T 
handles and other small articles. 
2. OSTRYA [Mich.] Scop. Shrubs or trees, the bark scaly. Staminate 
aments usually clustered, with close imbricate bracts. Pistillate aments with 
lobeless bracts. Six species, 3 American, 
3 in the Old' World. 
O. eT ST. Willd. Shrub, 
1. 
tree becom tall, the bark rou Es 
finely id pets leaf-blades mainly 
ong: mature bracts of 
m t 6-7 mm. long.—( OP- HORN- 
BEAM. Dzss-woon IRoNwOOD. , LEVER- 
BLACK-HAZEL.) — ze often d or 
provinees, Fla. ex., Man., an 
Spr.—The iet is used mostly for Wallets: and tool-handles. 
3. CORYLUS [Tourn.] L. Shrubs or trees, the bark smoothish. Sta 
a ith e bracts. ilate aments with fo eeu 
bractlets at maturity, these are dilated, or sometimes formed into a beaked 
involuere.—Seven species, 3 American, 4 in the Old World.—Spr.—HAZEL- 
NUTS. FILBERTS 
Mature bractlets distinct, leaf-like, incised. 1. C. americana. 
Mature bractlets united, prolonged into a narrow beak. 2. C. cornuta. 
1. C. americana Walt. Shrub 1-4 m. tall: i blades thickish, oval or sub- 
orbieular, varying to ovate or obovate, 5—15 em. long: sta minate aments 6—10 
