. The American botanist and florist: including lessons in the structure, life, and growth of plants; together with a simple analytical flora, descriptive of the native and cultivated plants growing in the Atlantic division of the American union. Botany; Botany. 104 STRUCTUKAL BOTANY, margin of the leaf or leaflet, with no reference to the general form. If the leaf be even-edged, having the tissue completely filled out, the appropriate term is, entire. Sometimes a vein runs along such a margin as if a hem. 309. But when the marginal tissue is deficient, the leaf be- comes dentate, having sharp
. The American botanist and florist: including lessons in the structure, life, and growth of plants; together with a simple analytical flora, descriptive of the native and cultivated plants growing in the Atlantic division of the American union. Botany; Botany. 104 STRUCTUKAL BOTANY, margin of the leaf or leaflet, with no reference to the general form. If the leaf be even-edged, having the tissue completely filled out, the appropriate term is, entire. Sometimes a vein runs along such a margin as if a hem. 309. But when the marginal tissue is deficient, the leaf be- comes dentate, having sharp teeth pointing outward from the centre ; serrate, with sharp teeth pointing forward, like the teeth of a saw; crenate, with rounded or blunt teeth. The terms denticulate, serrulate, crenulate, denote finer indentations of the several kinds; douhly dentate, etc., denote that the teeth aro themselves toothed. 'K ; 381, Serntelcifof CI 38t, Crpintc Icit nf Cutimnt ), Kcp, Lobed leaf of Clirj santhemum Dentate leaf of Arrow-wood, te le il of Shingle Oak. 3S7, 310. The undulate, or wavy edge, is somewhat different from the repand, Avhich bends like the margin of an umbrella. If the veins i:)roject, and are tipped with spines, the leaf becomes spinous. Irregularly divided margins are said to be erose or jagged, laciniate or torn, incised or cut. Often, instead of a deficiency, there is a superabundance of marginal tissue, de- denoted by the term o'ispate or crisped. 311. Insertion. Several important terms descriptive of the various modes of leaf-insertion must here be noticed. A sessile leaf is said to be amplexicaul when its base lobes adhere to and. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Wood, Alphonso, 1810-1881. Chicago, A. S. Barnes
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectbotany, bookyear1870
