. Comparative anatomy of the vegetative organs of the phanerogams and ferns. Plant anatomy; Phanerogams; Ferns. FtGS. i8i, 182.—Rochea coccinea (200). Figf. 181. Fragment of tlie epidermis from the edge of the leaf. 5^ water stoma ; s air stoma, with subsidiary cells. The scattered dots are wart-shaped projections of the outer walls.—Fig. 182. Section through . the edge of the leaf vertical to the surface, e—e epidermis, 5^ water stoma, it subsidiary cell, i somewhat thick vascular bundle in cross-section. The meshes with thicker and double outlines are the sections of bundles of trachea; whic
. Comparative anatomy of the vegetative organs of the phanerogams and ferns. Plant anatomy; Phanerogams; Ferns. FtGS. i8i, 182.—Rochea coccinea (200). Figf. 181. Fragment of tlie epidermis from the edge of the leaf. 5^ water stoma ; s air stoma, with subsidiary cells. The scattered dots are wart-shaped projections of the outer walls.—Fig. 182. Section through . the edge of the leaf vertical to the surface, e—e epidermis, 5^ water stoma, it subsidiary cell, i somewhat thick vascular bundle in cross-section. The meshes with thicker and double outlines are the sections of bundles of trachea; which run to neighbouring bundles ; the more delicate outlines are those of the accompanying elements. A short strand goes off from i and runs towards 5; the tracheides of which it consists diverge and embrace the delicate-celled group of epithema lying between li,j;, and S. All ' round is large-celled chlorophyll-parenchj'ma. It is attached to the xylem by means of one or two longitudinal rows of tracheides, more or less frequently interrupted by parenchymatous cells, and from here projects on each side into the surrounding parenchyma; in most of the species it has the form of a plate, which is either plane or a little curved, and approximately follows the direction of the leaf-surfaces (Taxus, Cephalotaxus, Torreya, Taxodium semper- virens, Cunninghamia (Fig. 183), Juniperus (Fig. 184), Thuja, Thujopsis, Gingko), or is curved from each side round the body of the vascular bundle, and is separated from the latter and from the plate on the other side only by a few rows of parenchymatous 1 Botan. Zeitg. 1864, p. 167, Taf. IV. ^ Ibid. 1871, p. 10. Mohl calls the tracheide-boider Trainfiision-tissuc. [See also Zimiiier- mann, iiber das Transfusions-Gewebe, Flora, 1880, p. 2.]. 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 o
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Keywords: ., bookcentury1800, bookdecad, booksubjectplantanatomy, bookyear1884
