Life-history of Bonnemaisonia hamifera (Trailliella intricata)

Abstract

J. Feldmann and G. Feldmann¹, when cultivating carpospores of Bonnemaisonia asparagoides, succeeded in getting Hymenoclonium serpens as the tetrasporophyte. The validity of these results, however, was challenged by Kylin², who supposed that the formations held to be tetraspores by the Feldmanns are in reality only end-cells which have started to divide by oblique walls typical of the adult axis. What, according to the Feldmanns, seems to be a tetrasporophyte is only a branched protonema of the gametophyte. Thus, in Kylin‘s opinion, there are only two phases in the life-history, the gametophyte and the carposporophyte (quoted by Drew³).