In very few cases has anything representing prothallial development been observed; generally a small cell (the antheridial or generative cell) is cut off, leaving a larger tube-cell. ❋ Various (N/A)
To study them in their natural position, thin longitudinal sections of the antheridial branch should be made. ❋ Douglas Houghton Campbell (N/A)
The antheridial branches are often bright-colored, red or yellow, so as to be very conspicuous. ❋ Douglas Houghton Campbell (N/A)
_D_, giant liverwort (_Conocephalus_), natural size. _an. _ antheridial disc. ❋ Douglas Houghton Campbell (N/A)
The sexual organs are developed in groups at the apices, the antheridial group usually terminating the main axis while the archegonia are borne on a lateral branch. ❋ Various (N/A)
Reproduction by zoospores formed of the whole contents of a cell, with a crown of numerous cilia; resting spores formed in sporangial cells after fecundation by ciliated spermatozoids formed in antheridial cells. ❋ Various (N/A)
Fructification: zoospores produced from the cell contents of the filaments; resting spores formed from the contents of particular cells after impregnation by ciliated spermatozoids produced in distinct antheridial cells. ❋ Various (N/A)
Fructification: ovate spores and tufts of antheridial cells attached to the lateral ramuli, which consist of minute, radiating, dichotomous beaded filaments. ❋ Various (N/A)
The antheridial branches arise from the main filaments or from oogonial branches, sometimes exclusively from one or the other, in other species from both. ❋ Unknown (1771)
When the plants become old, these delicate antheridial branches often disappear, leaving the antheridia adhering to the oogonia without indication of their origin. ❋ Unknown (1771)
This author at one time ( '60) regarded cer - tain peculiar filaments, whose peculiarity was really due to Chytridiaceous parasites, as male filaments of species which have no antheridial branches; but later (' 74), he gave up this view and considered plants of the latter sort as parthenogenetic forms of sexual species. ❋ Unknown (1771)
This is the only known case in this family of antheridia without antheridial branches. ❋ Unknown (1771)
Odspores averaging more than five; antheridial branches long A. oUgacarUha, ❋ Unknown (1771)
In case of the androgynous species, the antheridial branches begin to appear soon after the oogonial ones (Fig. 21); but the antheridia have usually been formed and come into contact with the oogonium before the basal wall of the latter has appeared. ❋ Unknown (1771)
The male organs, or antheridia, are, when present, almost always borne on slen - der lateral antheridial branches. ❋ Unknown (1771)
Oogonia not apiculate; antheridial branches always from the oogonial branches A. racbmosa. ❋ Unknown (1771)
It is not uncommon to see a young oogonium which has ceased its normal development and produced one or more smaller oogonia by proliferation from its surface (Fig. 23); and I have seen in A. A.ericana a fully formed oogonium, which, after the formation of its basal wall, had reverted to the vegetative condition, so to speak, and had given rise to an oogonial and an antheridial branch which had i-eached their full normal development (Fig. 24). ❋ Unknown (1771)
