. Comparative anatomy of the vegetative organs of the phanerogams and ferns. Plant anatomy; Phanerogams; Ferns. 292 PRIMARV ARRANGEMENT OF TISSUES. pass on further in the middle, sometimes at the periphery of the pith, and some insert themselves at an acute angle on similar branches from lower leaves, others end blind. At the foliar gap the bundles, which are themselves about as thick as a bristle, are surrounded by brown sclerenchyma, or supported by it on one side, and these sheaths of sclerenchyma, which are closed or open on one side, accompany the bundles for a long distance downwards; so
. Comparative anatomy of the vegetative organs of the phanerogams and ferns. Plant anatomy; Phanerogams; Ferns. 292 PRIMARV ARRANGEMENT OF TISSUES. pass on further in the middle, sometimes at the periphery of the pith, and some insert themselves at an acute angle on similar branches from lower leaves, others end blind. At the foliar gap the bundles, which are themselves about as thick as a bristle, are surrounded by brown sclerenchyma, or supported by it on one side, and these sheaths of sclerenchyma, which are closed or open on one side, accompany the bundles for a long distance downwards; sometimes they also anastomose with. Fig. 139.—Cyathea Imrayana; natural size. From a dead stem, the soft parts of which had rotted away; the stem is halved longitudinally, and seen from within. The figure shows a piece of the tube of vascu- lar bundles with one foliar gap, /—/, and a leaf-scar exactly halved longi- tudinally. From this t'le bundles of sclerenchyma which accompany the bundles may be seen to branch off, and from chere those which accompany the medullary bundles arise as branches and pass down into the pith with many branchings and anastomoses; some of them have blind pointed endings; the one which extends furthest downwards has anastomosed with one coming from a lower leaf. Of the bundles which end at the leaf-scar, m originates from the pith, the rest from the margin of the foliar 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 Bary, A. de (Anton), 1831-1888; Bower, F. O. (Frederick Orpen), 1855-1948; Scott, Dukinfield Henry, 1854-1934. Oxford : Clarendon Press
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Keywords: ., bookcentury1800, bookdecad, booksubjectplantanatomy, bookyear1884
