. Studies in fossil botany . Paleobotany. io4 STUDIES IN FOSSIL BOTANY with S. cuneifolium. In the smaller form (ft) there is a slender, triarch Fig. 43.—Sphenoj>hyllum Dawsoni, a. Obliquely transverse section of cone, showing parts of three whorls of bracts. a", hollow axis (stele missing) ; b, d, cortex of axis ; £, e', bracts cut at different levels ; f, sporangiophores, the innermost just springing from a whorl of bracts, which are here coherent; /', sporangiophores in connection with their sporangia ; g, g> g", sporangia of the three whorls, x 7. After Williamson,
. Studies in fossil botany . Paleobotany. io4 STUDIES IN FOSSIL BOTANY with S. cuneifolium. In the smaller form (ft) there is a slender, triarch Fig. 43.—Sphenoj>hyllum Dawsoni, a. Obliquely transverse section of cone, showing parts of three whorls of bracts. a", hollow axis (stele missing) ; b, d, cortex of axis ; £, e', bracts cut at different levels ; f, sporangiophores, the innermost just springing from a whorl of bracts, which are here coherent; /', sporangiophores in connection with their sporangia ; g, g> g", sporangia of the three whorls, x 7. After Williamson, Phil. Trans. Will. Coll. 1049 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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Keywords: ., bookcentury1900, bookdecade1900, bookpublisherlondonaandcblack
