. Elementary botany. Botany. 244 MORPHOLOG Y. of mosses, and is one way in which they are separated from the leafy-stemmed liverworts, the latter never having a midrib. 516. The fruiting moss plant.—In fig. 280 is a moss plant "in fruit," as we say. Above the leafy stem a slender stalk bears. the rapsule, and in this capsule are borne the spores. The ca|)sule then belongs to the sporophvte phase of the moss plant, and we should inquire whether the entire plant as we see it here is the sporophyte, or whether part of it is gametophyte. If a part of it is gametophyte and a part sporophy
. Elementary botany. Botany. 244 MORPHOLOG Y. of mosses, and is one way in which they are separated from the leafy-stemmed liverworts, the latter never having a midrib. 516. The fruiting moss plant.—In fig. 280 is a moss plant "in fruit," as we say. Above the leafy stem a slender stalk bears. the rapsule, and in this capsule are borne the spores. The ca|)sule then belongs to the sporophvte phase of the moss plant, and we should inquire whether the entire plant as we see it here is the sporophyte, or whether part of it is gametophyte. If a part of it is gametophyte and a part sporophyte, then where does the one end and the other begin? If we strip off the leaves at the end of the leafy stem, and make a longisection in the middle line, we should find that the stalk which bears the capsule is sim])ly stuck into the end of the Portion of mess pbnt of Mnitim afline, .sliowing two sjKirogonia from one brancti, Ca]isnl(i at left fias just shed the cap or opercuKim ; capsule at right is sliedding spores, and tlie teetli are bristling at the month. Next to the riglit is a young capsnle with calyptra still attached ; next "are two spores enlarged. leafy stem, and is not organically connected with it. This is tlie dividing line, then, between the gametophyte and the sporo- phyte. We shall find that here the archegonium containing. 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 Atkinson, George Francis, 1854-1918. New York : H. Holt
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