. A handbook of cryptogamic botany. Cryptogams. 198 ALGjE A tnle understanding of the sometimes complicated process of sexual reproduction in the Florideae has been much obscured by the numerous terms employed by the older writers for identical organs, and by incor- rect notions as to their functions. The true sexual organs, aniherids and procarps, are nearly always formed on individuals which do not produce tetraspores ; and the sexual individuals may be monoecious or dioecious ; the latter is the most common condition. If the ULvaceas are rightly included under Florideae, we have here a wide
. A handbook of cryptogamic botany. Cryptogams. 198 ALGjE A tnle understanding of the sometimes complicated process of sexual reproduction in the Florideae has been much obscured by the numerous terms employed by the older writers for identical organs, and by incor- rect notions as to their functions. The true sexual organs, aniherids and procarps, are nearly always formed on individuals which do not produce tetraspores ; and the sexual individuals may be monoecious or dioecious ; the latter is the most common condition. If the ULvaceas are rightly included under Florideae, we have here a wide departure from. Fig. in'the deVelopmeilt of the reproductive organs of Neinalion inuUifiduvt Ag. (magnified). {Spermat. — poUinoids.) the normal type, sexual reproduction taking place by the conjugation of motile swarm-cells. The antherid consists, in its simplest form (Porph)Taceae), of a soli- tary cell at the end of a long segmented branch ; and in this case it gives birth to a single pollinoid ; in other forms the antheridial cells occupy a similar position to the tetraspores, being formed in groups at the expense of the ultimate branchlets. They are also sometimes pro-. 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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