ISAKA, Nanako, Hiroko KAWAI-TOYOOKA, Ryo MATSUZAKI, Takashi NAKADA & Hisayoshi NOZAKI 2012 (June) Description of two new monoecious species of Volvox sect. Volvox (Volvocaceae, Chlorophyceae), based on comparative morphology and molecular phylogeny of cultured material J. Phycol. 48(3): 759-767, 4 figs., 2 tables Volvox kirkiorum, V. ferrisii |