. Botany; principles and problems. Botany. Fig. 206. Fig. 207. Fig. 206.—Marsilia. The spore-fruits or sporocarps (s) growing out from the petiole of the leaf contain microsporangia and megasporangia. (From Stras- burger, after Bischoff). Fig. 207.—A club-moss (Lycopodium). The underground stem has sent up a much-branched shoot on which are the small, scale-like leaves. Upon this are borne two groups of cones. for a time on the abundant supply of food stored in the female gametophyte, but soon becomes independent through the establishment of a root and leaf of its own. This heterosporous type
. Botany; principles and problems. Botany. Fig. 206. Fig. 207. Fig. 206.—Marsilia. The spore-fruits or sporocarps (s) growing out from the petiole of the leaf contain microsporangia and megasporangia. (From Stras- burger, after Bischoff). Fig. 207.—A club-moss (Lycopodium). The underground stem has sent up a much-branched shoot on which are the small, scale-like leaves. Upon this are borne two groups of cones. for a time on the abundant supply of food stored in the female gametophyte, but soon becomes independent through the establishment of a root and leaf of its own. This heterosporous type of reproduction is the highest found among the Filicineae. Lycopodineae or Club Mosses.—This group is by no means as rich in species as the ferns. The sporophyte (Fig. 207) has a well developed stem, typically prostrate or subterranean but sending up numerous erect branches which sometimes reach a decimeter or more in height. In contrast to the ferns, the leaves are very small, numerous, and crowded closely on the stems, presenting a. 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 Sinnott, Edmund Ware, 1888-. New York, McGraw-Hill
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectbotany, bookyear1923
