180 BETULACEAE 
3. C. laciniosa, Michx. (Fig. 6, pl. 25.) Bra Smac-Bark. KING 
Nut. Bark less shaggy. Leaflets, 7 to 9 (rarely 5), 8 in. long by 5 in. 
wide. Fruit 2 to 3 in. long, oblong, splitting early. Nut angular, large 
(1} to 2 in. long), pointed at both ends, yellowish-white. Kernel sweet. 
Central New York, Penna., and southward. 
4, C. alba,L. (Fig. 2, pl. 25.) Wire Heart Hickory. MOCKER 
Nur. Bark not shaggy but rough. Leaflets 7 to 9, persistently covered 
with soft hairs. Fruit globose 14 to 3% in. long, husk very thick and 
hard. Nut globose, not compressed at sides, 4 ridged, angled, pointed 
at summit. JXernel sweet. East Mass., northward and westward. 
5. C. microcarpa, Nutt. SMALL-rRUITED Hickory. Bark close but 
rough. Leaflets 5 to 7, oblong, 34 to 5 in. long, not hairy. Fruit small 
(Jess than 1 in. long), globose, husk thin, splitting imperfectly toward the 
base. Nut globose, small, slightly compressed, not angular. Kernel 
sweet. East Mass., and southward. 
6. C. glabra, Mill. Pic Nut. Brown Hickory. Bark close, not 
shaggy. Leaflets 5 to 7, oblong, widest at apex. Fruit top-shaped, the 
apex pointed. Nut brown, sharp pointed, thick shelled. Kernel bitter. 
Throughout our area. 
Sus-Orper II].—FAGALES. THe Breecu Trine 
Trees or shrubs with simple alternate leaves, the borders of 
which are generally notched or lobed, with leaf stems. Flowers 
of two forms almost always on the same tree. The staminate 
flowers always in catkins, in Castanea and the oaks they are ar- 
ranged in interrupted clusters on the catkin. In Fagus they are 
in a single cluster. The stamens are arranged in groups of 1 to 
20 in the axil of a bract or attached to the receptacle. The pis- 
tillate flowers in catkins in Betulaceae, in small groups in Fa- 
gaceae. Fruit a nut. 
Pistillate flowers in a.short more or less erect catkin or when 
not in a catkin the involucre at the base of the group 
without spines, consisting of leaf-like, generally divided, 
DEAGS see ek oa ee Fe 
Pistillate flowers never in catkins, the pistillate involucre 
forming a small cup containing one or more flowers 
er er ry ee 
Famity I—BETULACEAE, Tur Brron Famtty 
The birches and alders have the pistillate flowers in short erect 
catkins. In Carpinus and Ostrya they are arranged in a leafy 
