. A manual of the medical botany of North America [microform]. Botany, Medical; Botany; Botanique médicale; Botanique. 18 ELEMENTS OF BOTANY. lei or slightly divorgont course toward the margin or apex (Fig. 15). Such leaves are teriued parallei'veined ; and here is found cue of the disthic- tious between endogenous and exogenous plants. In exogenous plants the venation is extremely varied and gives rise to many different forms. In oufl particuhir, however, there is uniformity :. FlO. 26.—Slrtipln, pinnately voincrt loaf of chestnut. Margin Rcrrnto. the ultimate ramifications of the veins produ
. A manual of the medical botany of North America [microform]. Botany, Medical; Botany; Botanique médicale; Botanique. 18 ELEMENTS OF BOTANY. lei or slightly divorgont course toward the margin or apex (Fig. 15). Such leaves are teriued parallei'veined ; and here is found cue of the disthic- tious between endogenous and exogenous plants. In exogenous plants the venation is extremely varied and gives rise to many different forms. In oufl particuhir, however, there is uniformity :. FlO. 26.—Slrtipln, pinnately voincrt loaf of chestnut. Margin Rcrrnto. the ultimate ramifications of the veins produce a net-work ; hence such leaves are termed net-veined, and are thereby distinguished from the parallel-veined leaves of endogenous plants. One of the commonest forms of exogenous leaves is that in which the mid-^-ein pursues a direct coarse from the base to the apex, giving off, at regi:lar intervals, lateral branches which extend parallel with each other to the margin. Such leaves are denominated pinnately or feather- veined. The leaves of the beech and chestnut (Fig. 2G) are familiar ex- amples of this 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 Johnson, Laurence, 1845-1893. New York : W. Wood
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Keywords: ., boo, bookcentury1800, booksubjectbotany, booksubjectbotanymedical
