. Plant studies; an elementary botany. Botany. THE GREAT GROUPS OF BEYOPHYTES 313 The air chambers are outlined on the surface as small rhombic areas (areola), each containing a single air pore. Peculiar reproductive bodies are also developed upon the dorsal surface of Marcliantia for vegetative multiplica-. Fig. 287. Marchantia polymorpha: 1, partial section through archegonial disk, show- ing archegonia with long necks, and venters containing eggs; 9, young archego- nium showing axial row; 10, superficial view at later stage; 11, mature archego- nium, with axial row disorganized and leaving
. Plant studies; an elementary botany. Botany. THE GREAT GROUPS OF BEYOPHYTES 313 The air chambers are outlined on the surface as small rhombic areas (areola), each containing a single air pore. Peculiar reproductive bodies are also developed upon the dorsal surface of Marcliantia for vegetative multiplica-. Fig. 287. Marchantia polymorpha: 1, partial section through archegonial disk, show- ing archegonia with long necks, and venters containing eggs; 9, young archego- nium showing axial row; 10, superficial view at later stage; 11, mature archego- nium, with axial row disorganized and leaving an open passage to the large egg; 12, cross-section of venter; 13, cross-section of neck.—After Knt. tion. Little cups (cupules) appear, and in them are numer- ous short-stalked bodies (gemma), which are round and flat (biscuit-shaped) and many-celled (Figs. 284, 285). 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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