Bibliographic Detail
Bando, T., 1988
Reference:
Bando, T. (1988). A revision of the genera Docidium, Haplotaenium and Pleurotaenium (Desmidiaceae, Chlorophyta) of Japan. Journal of science of the Hiroshima University. Series B. Division 2. Botany 22: 1-63, figures 13-58.
Publication Date:
1988
Abstract:
A revision was made of the species belonging to the genera Docidium, Haplotaenium and Pleurotaenium found in Japan. More than 2,000 liquid samples including these desmids were collected from various localities in Japan, and about 800 cultured strains were isolated from the samples. These natural and cultural materials were taxonomically studied in due consideration of the morphological variations. With respect to each species of the three genera treated, morphological characters, such as the size and shape of the cell, the number and localization of chloroplasts, and presence or absence of terminal vacuoles, were thoroughly investigated. Furthermore, characters of mucilage pores and secreted mucilage were also studied in most species. The total flora recognized in the present revision includes 2 taxa of Docidium, 6 taxa of Haplotaenium and 31 taxa of Pleurotaenium, of which the following four taxa were reported as new to Japan: Pleurotaenium quantillum, P. hurmense var. curtum, P. cuyabense var. inornatum, and P. simplicissimum var. insigne.
Haplotaenium rectum var. foersteri is described as new to science. Six taxa of Pleurotaenium were treated as new combination and/or new status. Forty-two taxa were newly reduced to synonymy.
Zygospores were obtained in Pleurotaenium trabecula, P. archerii var. elongatum, P. ehrenbergii var. medio laeve, P. cuyabense, P. wallichianum, P. subcoronulatum var. africanum and P. alternans, among which some strains of P. trabecula (heterothallic), P. archerii var. elongatum (heterothallic), P. wallichianum (homothallic) and P. alternans (homothallic) formed many zygospores under cultural conditions.
