Goniotrichopsis reniformis (Kajimura) Kikuchi comb. nov. (Stylonematales, Rhodophyta) from Japan

doi:2006.21.2.185

Algae > Volume 21(2); 2006 > Article

Algae 2006;21(2): 185-191. doi: https://doi.org/10.4490/algae.2006.21.2.185

Norio Kikuchi¹^*, John A. West², Mitsuo Kajimura³ and Jong-Ahm Shin⁴

¹Coastal Branch of Natural History Museum and Institute, Chiba, Katsuura 299-5242, Japan
²School of Botany, University of Melbourne, Parkville 3010, Australia 32589 Tsuma, Okinoshima-cho, Oki-gun, Shimane 685-0104, Japan
⁴Aquaculture Program, College of Fisheries and Ocean Sciences, Chonnam National University, Yeosu 550-749, Korea

ABSTRACT

The morphology and life history of Stylonema reniforme Kajimura (Stylonematales, Rhodophyta) from Japan were investigated and its taxonomic placement was discussed. This species has 6-30 discoid chloroplasts devoid of a pyrenoid in each cell. This is a typical feature of the genus Goniotrichopsis. The species reproduced only by monospores, which were formed by the direct transformation of the vegetative cells similar to the type species Goniotrichopsis sublittoralis Smith. Goniotrichopsis reniformis (Kajimura) Kikuchi comb. nov. was proposed. The asexual life history of the present species was completed in 3-10 weeks at 15-20°C in culture.

Key words: Goniotrichopsis reniformis, life history, Rhodophyta, Stylonema reniforme, Stylonematales, taxonomy