Page:An introduction to physiological and systematical botany (1st edition).djvu/188

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158
FORMS OF LEAVES.

Partitum, deeply divided, nearly to the base, as Helleborus viridis, Engl. Bot. t. 200.
Bipartitum, tripartitum, multipartitum, according to the number of the divisions.

Laciniatum, laciniated, cut into numerous irregular portions, as Ranunculus parviflorus, t. 120, and Geranium columbinum, t. 259.

Incisum, and Dissectum, cut, are nearly synonymous with the last.

It is remarked by Linnæus that aquatic plants have their lower, and mountainous ones their upper, leaves most divided, by which they better resist the action of the stream in one case, and of wind in the other. Probably these actions are in some measure the causes of such configurations.

Palmatum, palmate, cut into several oblong, nearly equal segments, about half way, or rather more, towards the base, leaving an entire space like the palm of the hand, as Passiflora cærulea, Curt. Mag. t. 28.

Pinnatifidum, pinnatifid, cut transversely