. Algæ. Vol. I. Myxophyceæ, Peridinieæ, Bacillarieæ, Chlorophyceæ, together with a brief summary of the occurrence and distribution of freshwat4er Algæ . and antheridia. The sexual organs are developed atscattered intervals along the cylindrical filaments, and, except in the 1 Kiitzing (Tab, PJnjc. iv, t. 98) figured this state of Vaucheria as Gongrosira dichotoma, anunfortunate error which has given rise to much confusion, since it has, of course, no relationshipwith the species of the true Gongrosira (a genus of the Ulotrichales). Consult G. S. West, 04,p. Ill ; and Herring, 07, p. 116. Kiit
. Algæ. Vol. I. Myxophyceæ, Peridinieæ, Bacillarieæ, Chlorophyceæ, together with a brief summary of the occurrence and distribution of freshwat4er Algæ . and antheridia. The sexual organs are developed atscattered intervals along the cylindrical filaments, and, except in the 1 Kiitzing (Tab, PJnjc. iv, t. 98) figured this state of Vaucheria as Gongrosira dichotoma, anunfortunate error which has given rise to much confusion, since it has, of course, no relationshipwith the species of the true Gongrosira (a genus of the Ulotrichales). Consult G. S. West, 04,p. Ill ; and Herring, 07, p. 116. Kiitzing recorded the fact that his Gongrosira grew intofilaments of Vaucheria. Vaucheriacese •247 dicBcious species, the oogonia and antheridia usually arise side by side on thesame filament (fig. 159 A and B) or on short lateral branches (figs. 157 H;159 (7 and D). The oogonia, which are developed either as lateral outgrowthsof the filaments or terminating short branches, swell out and assume a moreor less rounded or ovoid form and are then cut off by a basal septum. Theapex of the oogonium generally develops a rostrum or beak, which is in most -O.
Size: 1619px × 1544px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookpublishercambridgeengtheuni
