Page:An introduction to physiological and systematical botany (1st edition).djvu/195

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SURFACE OF LEAVES.
165

p. 124. To these may be added the following, chiefly appropriated to leaves.

Punctatum, dotted; either superficially as in Rhododendrum punctatum, Andr. Repos. t. 36, and Melaleuca linarifolia, Exot. Bot. t. 56; or through the substance, as in Hypericum perforatum, Engl. Bot. t. 295, and the whole natural order to which the Orange and Lemon belong.

Rugosum, rugged, when the veins are tighter than the surface between them, causing the latter to swell into little inequalities, as in various species of Sage, Salvia, See Flora Græca; also Teucrium Scorodonia, Engl. Bot. t. 1543.

Bullatum, blistery, is only a greater degree of the last, as in the Garden Cabbage, Brassica oleracea.

Plicatum, plaited, when the disk of the leaf, especially towards the margin, is acutely folded up and down, as in Mallows, and Alchemilla vulgaris, Engl. Bot. t. 597, where, however, the character is but obscurely expressed.

Undulatum, undulated, when the disk near the margin is waved obtusely up and