. A class-book of botany; designed for colleges, academies, and other seminaries ... illustrated by a flora of the northern, middle, and western states; particularly of the United States north of the capitol, lat. 38 3/4 o. Botany; Plants -- United States; Plants -- Canada. PAKALLEL-VEINED LEAVES. 89 18. Digitate (finger-shaped), having narrower and deeper segments than the pahnate, as in the hemp. 19. Pedate (foot-shaped). The same as palmate, except that the two lateral lobes are themselves subdivided, as in the peony and passion-flower. 20. Laciniate (gashed), the veins and veinlets separat
. A class-book of botany; designed for colleges, academies, and other seminaries ... illustrated by a flora of the northern, middle, and western states; particularly of the United States north of the capitol, lat. 38 3/4 o. Botany; Plants -- United States; Plants -- Canada. PAKALLEL-VEINED LEAVES. 89 18. Digitate (finger-shaped), having narrower and deeper segments than the pahnate, as in the hemp. 19. Pedate (foot-shaped). The same as palmate, except that the two lateral lobes are themselves subdivided, as in the peony and passion-flower. 20. Laciniate (gashed), the veins and veinlets separate, as if the blade were cut and gashed with scissors. Ex. Ranunculus. 21. Peltate (shield-like), the veins radiating in all directions, and all connected by intervening tissue. This form is gener- ally also orbicular, and appears to result from the union of the base-lobes. Ex. Podophyllum peltatum, Tropeolum, Brasenia. 22. Rc7viform, hroad-ovatc, broad-cordate, &c., may also result from the radiate veining. 231. The form of parallel-veined leaves is less diversified than that of the preceding classes, being 23. Linear, when the veins (and fibres) are straight, as in the grasses. Tliis form may also occur in the feather-veined leaf by an equal development of all the veinlets as in Linaria vul- garis, & FIG. 31. —23, 24, 25, figures of leaves witli parallel veins ; 2 —10, margins of leaves. 24. Oval, lanceolate, oblong, or some kindred form, when the veins are curved, as in Carex, Cypripedium, Orchis, Sec, or it may be 25. Cordate, when some of the lower veins are curved back- wards and then upwards, as in Pontaderia, and even sagittate, when they are directed downwards at the base, as in the Sagit- 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. Boston, Crock
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Keywords: ., bookcentury1800, bookdecade1840, bookpublisher, booksubjectbotany
