. The botanical class-book, and flora of Pennsylvania, designed for seminaries of learning and private classes. Septinate, &c. ; or digitatelyfive foliatej seven foliate, &c. By this iiomendature, the dis-tinction between pinnate and digitate leaves is readily under-stood, 56; 57 y 58. MARGIN 111. The margin of a leaf may be entire, indented, bor-dered, or rolled; and is modified chiefly by the same causeswhich effect tjie form ; being, 1, Dentate, (toothed, Fig. 57,) when the margin is beset with projecting, hori-zontal, distant teeth. Ex. • Centaury, Enchanter3 Nightshade. Denticulate, whent
. The botanical class-book, and flora of Pennsylvania, designed for seminaries of learning and private classes. Septinate, &c. ; or digitatelyfive foliatej seven foliate, &c. By this iiomendature, the dis-tinction between pinnate and digitate leaves is readily under-stood, 56; 57 y 58. MARGIN 111. The margin of a leaf may be entire, indented, bor-dered, or rolled; and is modified chiefly by the same causeswhich effect tjie form ; being, 1, Dentate, (toothed, Fig. 57,) when the margin is beset with projecting, hori-zontal, distant teeth. Ex. • Centaury, Enchanter3 Nightshade. Denticulate, whenthe teeth are very fine ; and doubly dentate, when the teeth are themselves toothed 2. Sb&rate, (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 scrratures are very em&Il; and doubly iertvtte when they are themselvesserrate. APEX. 41 1. Entire, (even edged, Fig. 57,) when the line of the margin is : Lily, Lilac. 2. Crenate, (Fig. 58,) when the indentations are blunt and rounded, and do notincline to either extremity of the leaf. Ex.: Ground Iry, (Glechoma.) Cbenulati,whan such notches are rery small, as in the Sage. 59. 60.
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Keywords: ., bookcentury1800, bookdecade, booksubjectbotany, booksubjectplants
