. Carnegie Institution of Washington publication. Fig. 73. A. Rhizome of a strong plant of Botrychium virginianum. Xi. The base of the expanded leaf is cut away. B. Section of the terminal bud. si, stem apex. 1, 11, in, the three youngest leaves. C. Section of petiole, enlarged. D. Section of rhizome; p, pith; m, medullary rays; *,xylem; ph, phloem; c, cambium; sh, endodermis. Fig. 74. A-G. A series of sections of the sporophyll of Botrychium lanuginosum Wall. C is reversed in position. G, section of peduncle. H. Section of the petiole of the cotyledon of B. virginianum. i, i, lac
. Carnegie Institution of Washington publication. Fig. 73. A. Rhizome of a strong plant of Botrychium virginianum. Xi. The base of the expanded leaf is cut away. B. Section of the terminal bud. si, stem apex. 1, 11, in, the three youngest leaves. C. Section of petiole, enlarged. D. Section of rhizome; p, pith; m, medullary rays; *,xylem; ph, phloem; c, cambium; sh, endodermis. Fig. 74. A-G. A series of sections of the sporophyll of Botrychium lanuginosum Wall. C is reversed in position. G, section of peduncle. H. Section of the petiole of the cotyledon of B. virginianum. i, i, lacuna1. and the forking veins are attached to this laterally (fig. 72, E). The type of B. lunaria is without question the more primitive, and were the ends of the veins united so as to inclose areoles there would be exactly the same type of venation as is found in Ophioglossum. In Eubotrychium the anatomy of the leaf is almost exactly like that of Ophio- glossum, stomata being developed upon both sides of the leaf; the mesophyll is composed of absolutely similar cells throughout and the vascular bundles running. 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 Carnegie Institution of Washington. Washington, Carnegie Institution of Washington
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Keywords: ., bookauthorcarnegie, bookcentury1900, bookdecade1910, bookyear1911
