. Fungi; their nature, influence, and uses;. Fungi. SEXUAL EEPEODUCTION. 171 they give rise to tubular or vesicular germs, which, without beiug much elongated, produce zoospores.* De Bary has claimed for the oogonia in Ci/stopus and Ferono- spora a kind of fecundation which deserves mention These same fruits, he says, which owe their oriprin to sexual organs, should bear the names of oogonia and antlieridia, ac- cording to the terminology proposed by Pringsheim for analo- gous organs in the Algse. The formation of the oogonia, or female organs, commences by the terminal or interstitial
. Fungi; their nature, influence, and uses;. Fungi. SEXUAL EEPEODUCTION. 171 they give rise to tubular or vesicular germs, which, without beiug much elongated, produce zoospores.* De Bary has claimed for the oogonia in Ci/stopus and Ferono- spora a kind of fecundation which deserves mention These same fruits, he says, which owe their oriprin to sexual organs, should bear the names of oogonia and antlieridia, ac- cording to the terminology proposed by Pringsheim for analo- gous organs in the Algse. The formation of the oogonia, or female organs, commences by the terminal or interstitial swelling of the tubes of the mycelium, which increase and take the form of large spherical or oboval cells, and which separate themselves by septa from the tube which carries them. Their membrane encloses granules of opaque protoplasm, mingled with numerous bulky granules of colourless fatty matter. The branches of the mycelium which do not bear oot^onia apply their obtuse extremities against the growing oogonia; this extremity swells, and, by a transverse partition, separates itself from the supporting tube. It is the antheridium, or male organ, which is formed by this process ; it takes the form of an obliquely clavate or obovate cellule, which is always considerably smaller than the oogonium, and adheres to its walls by a plane or convex area. The slightly thickened membrane of the antheridia encloses proto- plasm which is finely granular. It is seldom that more than one antheridium applies itself to an oogonium. The two organs having together achieved ^^^ 9g,_co„j„g3Hon in their development, the large granules con-Pero/w«i»ra,- a. mahm- tained in the oogonium accumulate at its ''''"^ ^^ ^'tO centre to group themselves under the form of an irregular globule deprived of a proper membrane, and surrounded by a bed of almost homogeneous protoplasm. This globule is the gonosphere, or reproductive sphere, which, through the means of ' De Baiy, in " Annales des Scie
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