. Fungi; their nature, influence, and uses;. Fungi. SEXUAL EEPKODUCTION. 169 walls of the conceptacle in order to group themselves at the centre, where they float in a watery fluid. These gonospheros are then smooth and bare, with no membrane on their surface of the nature of cellulose. During the formation of the oogonla there arise from its â |)Oilit'L!l or from neighbouring filaments slight cylindrical curved branches, sometimes turned round the support of the oogonia, and which all tend towards this organ. Their superior extremity is intimately applied to its wall, then ceases to be elonga
. Fungi; their nature, influence, and uses;. Fungi. SEXUAL EEPKODUCTION. 169 walls of the conceptacle in order to group themselves at the centre, where they float in a watery fluid. These gonospheros are then smooth and bare, with no membrane on their surface of the nature of cellulose. During the formation of the oogonla there arise from its â |)Oilit'L!l or from neighbouring filaments slight cylindrical curved branches, sometimes turned round the support of the oogonia, and which all tend towards this organ. Their superior extremity is intimately applied to its wall, then ceases to be elongated, becomes slightly inflated, and is limited below by a partition; it is then an oblong cell, slightly curved, filled with protoplasm, and intimately applied to the oogoniaâ in fact, an antheridium or organ of the male sex. Each oogonium pos- sesses one or several antlieridia. Towards the time when the gono- spheros are formed it may be ob- served that each antheridium sends to the interior of the oogonia one or several tubular processes, which have crossed its side wall, and which open at their extremity in order to discharge their contents. These, while they are flowing out, present some very agile corpuscles, and which, considering their resemblance to those in Yauchcria, to which the name of spermatozoids are applied, ought to be considered as the I'ecundating corpuscles. Alter the evacuation of the antheridia the gonospheres are found to be covered with cellulose ; they then constitute so many oospores, with solid walls. De liary considers that, bearing in mind analogous phenomena observed in VaucJieria, and the direct observations of Priugsheim,* the cellulose membrane on the surface of the gonospheres is only the consequence of a sexual fecundation. in Achli/a dioica the antheridium is cylindrical, the plasma which it encloses is divided into particles, which attain neai'ly * PiingsLeim'a " Jalirbucliex," vol. ii. p. Fig. 97. â Conjugation in Acldya
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