the base of the blade; as in Fig. 150, 154. And
the terms _two-parted_, _three-parted_, etc., express the number of such
divisions.

_Divided_, when the incisions extend quite to the midrib, as in the
lower part of Fig. 151, or to the leaf-stalk, as in Fig. 155; which
really makes the leaf compound. Here, using the Latin form, the leaf is
said to be _bisected_, _trisected_ (Fig. 155), etc., according to the
number of the divisions.

[Illustration: Fig. 148, pinnately lobed; 149, pinnately cleft; 150,
pinnately parted; 151, pinnately divided, leaves.]

[Illustration: Fig. 152, palmately three-lobed; 153, palmately
three-cleft; 154, palmately three-parted; 155, palmately three-divided
or trisected, leaves.]

141. =The Mode of Lobing or Division= corresponds to that of the
veining, whether _pinnately veined_ or _palmately veined_. In the former
the notches or incisions, or _sinuses_, coming between the principal
veins or ribs are directed toward the midrib: in the latter they are
directed toward the apex of the petiole; as the figures show.

142. So degree and mode of division may be tersely expressed in brief
phrases. Thus, in the four upper figures of pinnately veined leaves, the
first is said to be _pinnately lobed_ (in the special sense), the second
_pinnately cleft_ (or _pinnatifid_ in Latin form), the third _pinnately
parted_, the fourth _pinnately divided_, or _pinnatisected_.

143. Correspondingly in the lower row, of palmately veined leaves, the
first is _palmately lobed_, the second _palmately cleft_, the third
_palmately parted_, the fourth _palmately divided_. Or, in other
language of the same meaning (but now less commonly employed), they are
said to be _digitately lobed_, _cleft_, _parted_, or _divided_.

144. The number of the divisions or lobes may come into the phrase. Thus
in the four last named figures the leaves are respectively _palmately
three-lobed_, _three-cleft_ (or _trifid_), _three-parted_,
_three-divided_, or better (in Latin form), _trisected_. And so for
higher numbers, as _five-lobed_, _five-cleft_, etc., up to
_many-lobed_, _many-cleft_ or _multifid_, etc. The same mode of
expression may be used for pinnately lobed leaves, as _pinnately
7-lobed_, _-cleft_, _-parted_, etc.

145. The divisions, lobes, etc., may themselves be _entire_ (without
teeth or notches), or _serrate_, or otherwise toothed or incised; or
lobed, cleft, parted, etc.: in the latter cases making _twice
pinnatifid_