. Carnegie Institution of Washington publication. Fig. oa.—Ophioglossum pendulum* A. Section of stem apex, X3. 1). The stem apex, more enlarged. B. Young sporophvll. sp, sporangiophore. X35. K. Very young sporophyll. sp, sporangiophore. 9 C. Stem apex, .v, arul youngest leaf, /. F. Cross-section of young sporangiophore. closely resembles that of Euophioglossum, hut the stomata are much largci and around the stoma is a concentrically arranged series of cells, indicating that probably the formation of the mother cell of the stoma is preceded by a series of preliminary. I 1 ' -Vasculai bundle fro

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. Carnegie Institution of Washington publication. Fig. oa.—Ophioglossum pendulum* A. Section of stem apex, X3. 1). The stem apex, more enlarged. B. Young sporophvll. sp, sporangiophore. X35. K. Very young sporophyll. sp, sporangiophore. 9 C. Stem apex, .v, arul youngest leaf, /. F. Cross-section of young sporangiophore. closely resembles that of Euophioglossum, hut the stomata are much largci and around the stoma is a concentrically arranged series of cells, indicating that probably the formation of the mother cell of the stoma is preceded by a series of preliminary. I 1 ' -Vasculai bundle from petiole ol '' sum pendulum*. 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 Carnegie Institution of Washington. Washington, Carnegie Institution of Washington

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Keywords: ., bookauthorcarnegie, bookcentury1900, bookdecade1910, bookyear1911