异形藻属一新种——扁球异形藻及其生活史的研究

本文报道了团藻目、壳衣藻科、异形藻属一新种——扁球异形藻。此种从非洲的土壤标本中分离获得。营养细胞(囊壳、原生质体)与已知的其它8个种有明显的不同。生活史的培养观察发现有性生殖为异配，这是此属未曾被描述的一个特征。

A New Species of Dysmorphococcus (Phacotaceae, Volvocales) and Its Life Cycle

This paper deals with the morphology and life cycle of a new species ofDysmorphococcus oblatus Yu et Wei (Phacotaceae, Volvocales) from Africa. The alga seemsto be morphologically rather distinct from the other members (lorica, protoplast and numberof pyrenoid). Moreover, a comparison is made of overall morphological and reproductivecharacteristics of the present taxon with the other 8 known species of this genus. The culturalexperiment of the life cycle of this alga reveals certain attributes unrecorded for early des-cribed species of this genus. The alga is homothallic, and heterogametic and sexual reproduc-tion produces 32-64 male gametes and 2 female gametes.