. Bulletin of the British Museum (Natural History), Geology. . Fig. 9. a, b, Two leaves of Asplenium obtusilobum showing progressive pinna reduction and the formation of sporophytic buds. After Kupper, 1906. c, Part of a leaf stolon of Asplenium mannii showing three developing plantlets. All nat. size. one of the protoxylem groups accompanied by a small amount of metaxylem is detached from the rest of the leaf trace and becomes linked with the vascular supply of the developing sporophyte (Text-figs. 106, c). This condition appears to furnish a close parallel to the behaviour of the vascular bu
. Bulletin of the British Museum (Natural History), Geology. . Fig. 9. a, b, Two leaves of Asplenium obtusilobum showing progressive pinna reduction and the formation of sporophytic buds. After Kupper, 1906. c, Part of a leaf stolon of Asplenium mannii showing three developing plantlets. All nat. size. one of the protoxylem groups accompanied by a small amount of metaxylem is detached from the rest of the leaf trace and becomes linked with the vascular supply of the developing sporophyte (Text-figs. 106, c). This condition appears to furnish a close parallel to the behaviour of the vascular bundle in the diarch axes of Botryopteris antiqua and suggests that, applying the criteria of comparative anatomy, these. 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 British Museum (Natural History). London : BM(NH)
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