. Carnegie Institution of Washington publication. D' E Archegonia of Kauifussia. X210. b, basal cell; o,egg; is ventral canal cell; «.c, neck canal cell. In Kaulfussia (fig. 102) the archegonia form, as a rule, only after the antheridia have ceased to develop. Compared w7ith the other Marattiace;e they are decidedly large, and in this respect Kaulfussia approaches Ophioglossum. Like the mothei cell ot the antheridium, there is a good deal of variation in the width of the young archegonium in Kaulfussia. Some of the narrower types recall the archegonium of Anthoceros and emphasize the resemblan
. Carnegie Institution of Washington publication. D' E Archegonia of Kauifussia. X210. b, basal cell; o,egg; is ventral canal cell; «.c, neck canal cell. In Kaulfussia (fig. 102) the archegonia form, as a rule, only after the antheridia have ceased to develop. Compared w7ith the other Marattiace;e they are decidedly large, and in this respect Kaulfussia approaches Ophioglossum. Like the mothei cell ot the antheridium, there is a good deal of variation in the width of the young archegonium in Kaulfussia. Some of the narrower types recall the archegonium of Anthoceros and emphasize the resemblances between the archegonium of the Anthocerotacea- and the eusporangiate terns. The neck of the archegonium is very short, each ot the tour original neck cells often dividing only once, so that there may be but two cells to each ot the four rows. More commonly, however, there is a. Fig. 10;. Young archegODia of Dan<rti tlliplica. X350. second division in some of the cells, so that each row consists ot three cells. The nucleus ot the broad neck canal cell probably always divides, but the numbei 61 available specimens was too small to decide whether or not there is evei formed a division wall between these, although it is not at all unlikely that this may occur. I he ventral canal cell is conspicuous and equals its sister cell, the egg, in breadth. In the peripheral portion of all the axial cells of the archegonium there are many small granules ot starch. Jonkmann figures similar starch crannies in both Marattia and 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 Carnegie Institution of Washington. Washington, Carnegie Institution of Washington
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