. Plant studies; an elementary botany. Botany. 318 PLANT STUDIES contain both kinds, for Mosses are both dioecious and monoe- cious. The two principal groups are as follows : 207. Sphagnum forms.âThese are large and pallid bog mosses, found abundantly in marshy ground, especially of temperate and arctic regions, and are conspicuous peat- â d. B C D t £ J" A Fig. 291. Sphagnum ; A, a leafy branch (gametophore) bearing four mature gporo- gonia ; _£, archegonium in whose venter a young embryo sporophyte (em) is de- veloping ; C, section of a young sporogonium (sporophyte), showing the bulb
. Plant studies; an elementary botany. Botany. 318 PLANT STUDIES contain both kinds, for Mosses are both dioecious and monoe- cious. The two principal groups are as follows : 207. Sphagnum forms.âThese are large and pallid bog mosses, found abundantly in marshy ground, especially of temperate and arctic regions, and are conspicuous peat- â d. B C D t £ J" A Fig. 291. Sphagnum ; A, a leafy branch (gametophore) bearing four mature gporo- gonia ; _£, archegonium in whose venter a young embryo sporophyte (em) is de- veloping ; C, section of a young sporogonium (sporophyte), showing the bulbous foot ispf) imbedded in the apex of the pseudopodium (pis), the capsule (k), the columella (CO) capped by the dome-shaped archesporium (spo), a portion of the calyptra ica), and the old archegonium neck (ah) ; D, branch bearing mature eporogonium and showing pseudopodium (ps), capsule (k), and operculum (d); E, antheridium discharging sperms ; F, a single sperm, showing coiled body and two cilia.âAfter Sctiimper. iormers (Fig. 291). The leaves and gametophore axis are of peculiar structure to enable them to suck up and hold a large amount of water. This abundant water-storage tissue and the comparatively poor display of chlorophyll-contain- ing cells gives the peculiar pallid appearance. 208. True Mosses.âThis immense and most highly organ- ized Bryophyte group contains the great majority of the. 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 Coulter, John Merle, 1851-1928. New York, D. Appleton and Company
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