. Fossil plants : for students of botany and geology . Paleobotany. XIX] LEPIDOCABPON 273 up from the sporophyll, forming an integument which overtops the apical ridge of the sporangium, leaving a narrow micropyle in the form of a long crevice (m, fig. 218, B). At the proximal end of the sporangium the integument forms an enclosing wall; at the distal end it abuts on and is continuous with the upturned end of the sporophyll. It is clearly established by Scott that the. Fio. 218. Lepidocarpon Lomaxi, Scott. A and C. After Scott. B. Diagram of a single sporophyll: m, micropyle ; St, stele. tissu
. Fossil plants : for students of botany and geology . Paleobotany. XIX] LEPIDOCABPON 273 up from the sporophyll, forming an integument which overtops the apical ridge of the sporangium, leaving a narrow micropyle in the form of a long crevice (m, fig. 218, B). At the proximal end of the sporangium the integument forms an enclosing wall; at the distal end it abuts on and is continuous with the upturned end of the sporophyll. It is clearly established by Scott that the. Fio. 218. Lepidocarpon Lomaxi, Scott. A and C. After Scott. B. Diagram of a single sporophyll: m, micropyle ; St, stele. tissue which invests the sporangia is not the upturned margins of the sporophyll, but a new formation fully entitled to the designation integument. It is noteworthy that the integument is not developed until a late stage in the ontogeny of the strobilus; it is not formed until after the production of the prothallus^ 1 Letter from D. H. Scott (March 30, 1908).. 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 Seward, A. C. (Albert Charles), 1863-1941. Cambridge : University Press
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Keywords: ., bookcentury1800, bookdecade1890, bookpublishercambr, bookyear1898
