. A handbook of cryptogamic botany. Cryptogams. MUSCI 149 In most Bryaceae the tissue of the leaf is nearly homogeneous, with the exception of the margin and an elementary midrib composed of elongated prosenchymatous cells; but in Leucobryum (Hpe.) the small chloro- FlG. 117.—Sporange of Polytrichunt commune, showing epiphragm. A, covered by calypter; B, with calypter removed ; C, with opercule removed (magnified). Fig. 118.—Sporange of Hypnum populeum, showing peristome (magnified). phyllous cells interlace among large empty cells with circular orifices in their walls, as in Sphagnum. The ver
. A handbook of cryptogamic botany. Cryptogams. MUSCI 149 In most Bryaceae the tissue of the leaf is nearly homogeneous, with the exception of the margin and an elementary midrib composed of elongated prosenchymatous cells; but in Leucobryum (Hpe.) the small chloro- FlG. 117.—Sporange of Polytrichunt commune, showing epiphragm. A, covered by calypter; B, with calypter removed ; C, with opercule removed (magnified). Fig. 118.—Sporange of Hypnum populeum, showing peristome (magnified). phyllous cells interlace among large empty cells with circular orifices in their walls, as in Sphagnum. The very numerous genera of Bryacese are further classified as under. Acrocarpi.—Fructification produced at the extremity of the branches. Illustrative genera :—Weissia (Hedw.), Dicranum (Hedw.), Leucobr3aim (Hpe.), Pottia (Ehrh.), Tortula (Hedw.), Bartramia (Hedw.), Encalypta (Schreb.), Fissidens (Hedw.), Grimmia (Ehrh.), Or- thotrichum (Hedw.), Zygodon (H. & T.), Tetraphis (Hedw.), Buxbaumia (Hall.), Polytri- chum (Dill.), Aulacomnion (Schw.), Bryum (H. & T.), Mnium (B. & S.), Funaria (Schreb.), Splachnum (B. & S.), Tayloria (Hook.), Barbula (Hedw.), Ceratodon (Brid.). Pleurocarpi.—Fructification lateral, not at the extremity of the prin- cipal branches. Illustrative genera :—Hedwigia (Ehrh.), Fontinalis (L.), Hookeria (Sm.), Hypnum (Dill.), Leucodon (Schw.), Neckera (Hedw.).. 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 Bennett, Alfred W. (Alfred William), 1833-1902; Murray, George Robert Milne, 1858-. London, New York, Longmans, Green, and Co.
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