60 NOMENCLATURE OF THE LEAF. 



T. Fiddle-shaped or panduraeform oblong, broad at the two ex- 

 tremities Mid contracted in the middle, as in the fiddle dock and 

 Virginian bindweed. (F. 92.) 



w. Lyre-shaped or lyrate cut into several transverse segments, 

 gradually larger towards the extremity of the leaf which is rounded, 

 as in common avens. (F. 93 ) 



x. Lobed or lobate when it is deeply divided into rounded seg- 

 ments, and is therefore said to be 



Two-lobed as in smooth-leaved mountain ebony. (F. 94.) 

 Three-lobed as in hepatica anemone. (F. 95.) 

 Five-lobed, &c. as in common hop and sycamore. 



y. Arrow-shaped or saggitate triangular, hollowed oat very 

 much at the base, as in common sorrel and common arrow-bead. 

 (F. 102.) 



z. Halberd-shaped or hastate when the sides are protruded into 

 two lateral spreading points or lobes near the base, as in common 

 arum and common wood sorrel. (F. 96.) Sometimes the lateral lobes 

 are distinct, as represented by F. 97. 



a a. Heart-shaped or cordate when it is hollowed at the bate 

 into two lobes, and pointed at the apex, so that the leaf has some- 

 what the appearance of the heart on a card, as in common burdock 

 and common black bryony. (F. 98.) When the apex, instead of 

 being directly opposite to the base, is thrown off at one side, the leaf 

 is said to be oblique heart-shaped, as beautifully illustrated in bego- 

 nia. (F.99.> 



b b. Kidney-shaped or reniform when the apex is broad aad 

 rounded and the base deeply hollowed out, as in asarahacca aid 

 common ground ivy. (F. 101.) 



c c. Palmated when it is divided into oblong or finger-like lobs, 

 not, however, extending to the base, but leaving an entire flat spa^e 

 which has been likened to the palm of the hand, as in blue-flower;d 

 passion-flower. (F. 100.) 



d d. Incised or laciniated when it is cut into numerous irregnlir 

 divisions which are termed segments, as in the long-stalked gen- 

 nium and cut-leaved navel-wort. (F. 103.) When the divisiois 

 reach nearly to the base, it is said to be parted, (F. 107) and accorl- 

 ing to the number of these, the leaf is said to be bipartite, tripartite, 

 quadripartite, qninquepartite, and multipartite, or divided iffo 

 two, three, four, five, or many parts. 



e e. Cloven when the margin of the segments are nearly straigit 

 lines, and according to the number of clefts. The leaf is termed 

 Trifid having three clefts or divisions, as in trifid bidens. 



