. Bulletin. 1901-13. Agriculture; Agriculture. Bui. 2, Bureau of Plant Industry, U. S. Dept. of Agriculture. Plate H. J. Webber & L. H. Webber IX Spermatogenesis of Zamia 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 United States. Bureau of Plant Industry, Soils, and Agricultural Engineering. Washington Govt. Print. Off

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