. Fundamentals of botany. Botany. THE EVOLUTION OF PLANTS 597 the megasporangium, which is enclosed in the integument. In this connection it is of interest to note that the seeds of some modern plants (, orchids) do not possess differ- entiated embryos, but whether this is a primitive or a reduced character is not certain. The pollen was formed in spindle-shaped pollen-sacs, having two chambers and borne in clusters of four to six on the under side of httle oval discs from 2 to 3 millimeters long. These structure^. Please note that these images are extracted from scanned page images that m
. Fundamentals of botany. Botany. THE EVOLUTION OF PLANTS 597 the megasporangium, which is enclosed in the integument. In this connection it is of interest to note that the seeds of some modern plants (, orchids) do not possess differ- entiated embryos, but whether this is a primitive or a reduced character is not certain. The pollen was formed in spindle-shaped pollen-sacs, having two chambers and borne in clusters of four to six on the under side of httle oval discs from 2 to 3 millimeters long. These structure^. 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 Gager, C. Stuart (Charles Stuart), 1872-1943. Philadelphia, P. Blakiston's son & co.
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Keywords: ., bookauthorgag, bookcentury1900, bookdecade1910, booksubjectbotany
