. Bulletin of the British Museum (Natural History), Geology. . Figs. 5, 6. Fig. 5, Transverse section of part of the stem stele near its apex showing the incompletely differentiated metaxylem and an isolated mesarch protoxylem tracheid. () Oliver Coll. 1247. x 80. Fig. 6, A small group of dark sclerized cells from the inner cortex of the stem. Gordon Coll., King's College, 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 ori


. Bulletin of the British Museum (Natural History), Geology. . Figs. 5, 6. Fig. 5, Transverse section of part of the stem stele near its apex showing the incompletely differentiated metaxylem and an isolated mesarch protoxylem tracheid. () Oliver Coll. 1247. x 80. Fig. 6, A small group of dark sclerized cells from the inner cortex of the stem. Gordon Coll., King's College, 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 British Museum (Natural History). London : BM(NH)


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