TERMINOLOGY. ge 
84. Cowled, (cucullatus), when in a heart-shaped 
eaf the lobes are so bent towards each other as to 
have the appearance of a cone. 
85. Convex, (convexum), when the middle of the 
leaf is thicker than the rim, raised on the upper 
surface and hollowed on the under. 
86. Keel-shaped, (carinatum), when on the sacle 
surface of a linear, lanceolate or oblong leaf, the 
place of the middle rib is formed like the keel of 
a ship. 
B. Compound Leaves. 
87. Compound, (composi‘um), when several leaves 
are supported by one footstalk. To this term be- 
long Nos. 88, 92, 95, 96, 97. But when the leaf 
agrees with the above definition, although it should 
not come under any of the following kinds, it is still 
to be considered as a compound leaf. ? 
88. Fingered, (digitatum), when the base of se- 
veral leaves rests on the point of one footstalk, as 
in the horse-chesnut, Aesculus ippocastanum. 
89. Binate, (binatum), when two leaves stand by 
their base on the tep of one stalk; but if the two 
foliola of a binate leaf bend back in a horizontal 
direction, it is called a conjugate leaf, (folium con- 
ugatum ). 
290, Bigeminate, ‘(bigeminatum, bigeminum), when 
a divided leaf-stalk at each point bears two leaves, 
as In some species of Mimosa, fig. 217. 
91. Trigeminate, (trigeminatum or tergeminum), 
when a divided leaf-stalk on each pomt bears two 
Feaves, and on the principal stalk, where it divides, 
C2 there 
