海産付着珪藻 Climaconeis riddleae A.K.S. Prasad の形態

The fine structure of a marine attached diatom, Climaconeis riddleae, newly reported from Japan was examined by light and scanning electron microscopies. The following morphological characteristics of this species are revealed in detail through the present study; 1) two plastids distributed on both sides of the central cytoplasm, 2) the uniseriate striae composed of quadrangle or oval areolae and 3) the cingulum consisting of five open bands; a valvocopula without craticular bar and four narrow bands