. The Botanical Class-Book and Flora of Pennsylvania. MARGIN. 111. The margin of a leaf may be entire, indented, bor-dered, or rolled; and is modified chiefly by the same causeswhich effect the form ; being, t. Dentate, (toothed, Fig. 57.) when the margin is beset with projecting, hori-zontal, distant teeth. Ex.: Centaury, Enchanters Nightshade. Denticulate, whenthe teeth are very fine; and doubly dentate, when the teeth are themselves toothed. 2. Sekrate, (Fig. 58,) when the margin is beset with sharp teeth, pointing towardthe apex of the leaf, like the teeth of a saw. Ex.: Rose, Beach. Serru
. The Botanical Class-Book and Flora of Pennsylvania. MARGIN. 111. The margin of a leaf may be entire, indented, bor-dered, or rolled; and is modified chiefly by the same causeswhich effect the form ; being, t. Dentate, (toothed, Fig. 57.) when the margin is beset with projecting, hori-zontal, distant teeth. Ex.: Centaury, Enchanters Nightshade. Denticulate, whenthe teeth are very fine; and doubly dentate, when the teeth are themselves toothed. 2. Sekrate, (Fig. 58,) when the margin is beset with sharp teeth, pointing towardthe apex of the leaf, like the teeth of a saw. Ex.: Rose, Beach. Serrulate, whenthe serratures are very small; and doubly serrate when they are themselvesserrae. AVKX. 41 1. Entire, (even edged, Fig. 57,) when tho line of the margin ie : Lily. Lilac. 2. , (Fig. 58,) when the indentations are blunt and rounded, and do notincline to either extremity of the leaf. Ex.: Groundlvy, (Glcchonia.) CSENPLAIB,when such notches are very small, as in the Sage. 59.
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