. Studies in fossil botany . Paleobotany. SEED-LIKE LYCOPODIACEOUS ORGANS 195 in at the top, but leaving a narrow crevice or micropyle (Figs. 81 and 82). This opening, however, differed from the micropyle of ordinary seeds in not being tubular, but forming a long narrow slit, extending in the radial direction almost the whole length of the sporangium,. Fig. 81.—Lepidocarpon Lomaxi. Upper part of integumented "seed," containing prothallus. z", integument; sin, wall of sporangium; mg, membrane of megaspore ; pr, tissue of prothallus ; y, possible central cell of an archegonium; c.
. Studies in fossil botany . Paleobotany. SEED-LIKE LYCOPODIACEOUS ORGANS 195 in at the top, but leaving a narrow crevice or micropyle (Figs. 81 and 82). This opening, however, differed from the micropyle of ordinary seeds in not being tubular, but forming a long narrow slit, extending in the radial direction almost the whole length of the sporangium,. Fig. 81.—Lepidocarpon Lomaxi. Upper part of integumented "seed," containing prothallus. z", integument; sin, wall of sporangium; mg, membrane of megaspore ; pr, tissue of prothallus ; y, possible central cell of an archegonium; , central strand of prothallus. X 20. (G. T. G.) Scott, Phil. Trans. S. Coll. 1073. which was radially elongated, as in an ordinary Lepidostrobus. A ligule was present, at the distal end, just as in that genus. When cut at right angles to this slit-like micropyle, the appearance of the sporangium with its integument is altogether that of a seed (see Fig. 82), and detached specimens were long known to science under the. 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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