. Bulletin. Science; Natural history; Natural history. ^: >'^_^.®'.**5JiLS^l^^A**.' Figs. 3-7. Figs. 3-6. Membranoptera spatulata. Holotype collection. Fig. 3. Blade with conspicuous midline. Fig. 4. Formation of a bladelet from the midline of parent blade. Figs. 5 and 6. Spermatangial sori separated by sterile cells. Fig. 7. Apoglossum punctatum. Surface view of holotype, showing discrete tetrasporangial sori. Fig. 3, x 112; Fig. 4, x40; Fig. 5, x740; Fig. 6, x728; Fig. 7, x Please note that these images are extracted from scanned page images that may have been digitally enhanced

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. Bulletin. Science; Natural history; Natural history. ^: >'^_^.®'.**5JiLS^l^^A**.' Figs. 3-7. Figs. 3-6. Membranoptera spatulata. Holotype collection. Fig. 3. Blade with conspicuous midline. Fig. 4. Formation of a bladelet from the midline of parent blade. Figs. 5 and 6. Spermatangial sori separated by sterile cells. Fig. 7. Apoglossum punctatum. Surface view of holotype, showing discrete tetrasporangial sori. Fig. 3, x 112; Fig. 4, x40; Fig. 5, x740; Fig. 6, x728; Fig. 7, x 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 Southern California Academy of Sciences. Los Angeles, Calif. : The Academy

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Keywords: ., bookcentury1900, booksubjectnaturalhistory, booksubjectscience