. College botany; structure, physiology and economics of plants. Botany. 72 COLLEGE BOTANY compound ( 53), in which the leafleds are attached at vari- ous points along the petiole from base to tip^, and the palmately compound (Fig. 54), in which the leaflets are attached at the tip of a common petiole. The simple leaves are vario'usly designated as cordate or heart-shaped, cuneate or wedge-shaped, deltoid or delta-shaped, elliptical or ellipse-shaped, hastate or halberd-shaped, lanceolate. Fig. 51.—Palmately veined Fig. 52.—Palmately veined leaf. or lance-shaped, orbicular or circular, ov
. College botany; structure, physiology and economics of plants. Botany. 72 COLLEGE BOTANY compound ( 53), in which the leafleds are attached at vari- ous points along the petiole from base to tip^, and the palmately compound (Fig. 54), in which the leaflets are attached at the tip of a common petiole. The simple leaves are vario'usly designated as cordate or heart-shaped, cuneate or wedge-shaped, deltoid or delta-shaped, elliptical or ellipse-shaped, hastate or halberd-shaped, lanceolate. Fig. 51.—Palmately veined Fig. 52.—Palmately veined leaf. or lance-shaped, orbicular or circular, oval or egg-shaped, reni- form or kidney-shaped and sagittate or arrow-shaped. The mar- gins of the leaf may usually be described as entire or smooth, serrate or saw-toothed, dentate or toothed, or lobed. All grada- tions may be found from the slightly lobed, through the more deeply lobed to the compound leaves. Functions of Leaves.—The most important function of the leaf is the making of carbohydrates, which is the first step in. 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 Cook, Melville Thurston, 1869-1952. Philadelphia and London, J. B. Lippincott Company
Size: 1899px × 1315px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, booksubjectbotany, bookyear1920
