. Class-book of botany: being outlines of the structure, physiology and classification of plants; with a flora of the United States and Canada. Botany; Plants; Plants. 58 150 FORM OR FIGURE. 149 147 MS. Palmate-veined leaves. 147, Menispermum Canadense. 143, Passiflora cenilea. 149, Brou»- sonetia papyrifera. 150, Oak geranium. Leaves are palmately cleft and palmately parted, according to the depth of the incisions as above described. But the most peculiar modi- fication is 273. The pedate, like a bird's foot, having the lowest pair of veinlets enlarged, recurved, and bearing each several of t
. Class-book of botany: being outlines of the structure, physiology and classification of plants; with a flora of the United States and Canada. Botany; Plants; Plants. 58 150 FORM OR FIGURE. 149 147 MS. Palmate-veined leaves. 147, Menispermum Canadense. 143, Passiflora cenilea. 149, Brou»- sonetia papyrifera. 150, Oak geranium. Leaves are palmately cleft and palmately parted, according to the depth of the incisions as above described. But the most peculiar modi- fication is 273. The pedate, like a bird's foot, having the lowest pair of veinlets enlarged, recurved, and bearing each several of the segments (148). 274. The forms of the parallel- veined leaves are remarkable for their even, flowing outlines, diversified solely by the direction and curvature of the veins. When the veins are straight the most com- mon form is 275. Tue linear, long and narrow, with parallel margins, like the leaves of the grasses—a form which may also occur in the pinnate-veined leaf, when the veinlets are all equally shortened. The cnsiform, or sword-shaped, is also linear, but has its edges vertical, that is, directed upward and downward. 276. If the veins curve, we may have the lanceolate, elliptical, or even orbicular forms; and if the lower curve downward, the cordate, sagittate, etc., all of which are shown in the cuts. The palmate or radiate form is finely illustrated in the palmetto and other palms, whose large, fan-shaped leaves are appropriately termed flabelr liform (fan-shaped). 277. The leaves of the pine and the fir tribe (Conifera) gen- erally are parallel-veined also, and remarkable for their contracted. 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. New York, A. S. Barnes & Burr
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Keywords: ., bookcentury1800, booksubjectbotany, booksubjectplants, bookyear18
