. Studies in fossil botany . Paleobotany. ZYGOPTERIS 313 axillary shoot and the normal stem of Zygopteris ; this fact, which is also shown in the English specimens, seems quite conclusive in favour of the cauline nature of the axillary organ. Besides the foliage - leaves, Zygopteris possessed rudimentary leaf-like organs, of small size, termed. Fig. iiy.—Zygopteris corrugata.— Transverse section of an "Apblebia" with part of the outer cortex of the leaf-base to which it belongs. The appendage contains two vascular bundles. From a photograph by .Mr. L. A. Boodle. X36. Will. Coll. =64.
. Studies in fossil botany . Paleobotany. ZYGOPTERIS 313 axillary shoot and the normal stem of Zygopteris ; this fact, which is also shown in the English specimens, seems quite conclusive in favour of the cauline nature of the axillary organ. Besides the foliage - leaves, Zygopteris possessed rudimentary leaf-like organs, of small size, termed. Fig. iiy.—Zygopteris corrugata.— Transverse section of an "Apblebia" with part of the outer cortex of the leaf-base to which it belongs. The appendage contains two vascular bundles. From a photograph by .Mr. L. A. Boodle. X36. Will. Coll. =64. scale-leaves by Renault and Stenzel, who discovered them in Z. Brongniarti and Z. scandens respectively. I have recently observed them in the British species, Z. Grayi (Fig. 11 5) and Z. corrugata (Fig. i 17), and am thus able to confirm the statements of the authors cited, as to which I previously felt some doubt. A curious feature of these appendages, which have a simple, scale- like form, is that they occur on the petiole-bases as. 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 Scott, Dukinfield Henry, 1854-1934. London, A. and C. Black
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