Examination of Trentepohlia Martius species indicated significant morphological diversity within the genus. This diversity forms the basis for the description of a new genus, Printzina Thompson and Wujek. The generic taxonomy is based on the nature of its superficial growth on leaves or twigs and a papilla pore basal on the sporangium, adjacent to the area of attachment. Certain nomen‐clatural treatments were required: the transfer of nine species from Trentepohlia and the description of one new species, Printzina ampla.

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Developmental morphology and sexual reproduction of Chaetosphaeridium globosum are described. Dicoleon nordstedtii is reduced to synonymy with C. globosum. A species new to science, C. gemmatum, is described. Descriptions are given of material collected of C. ovalis and C. pringsheimii accompanied by a key to the 4 species of the genus. The species C. huberi is relegated to species dubium.

2002. The genera Uroglena, Urogienopsis, and Eusphaerella (Chrysophyceae). Phycologia 41: 293-305.Distinctive fe atures that support the retention of Lemmermann's genus Uroglenopsis and distinguish it from Ehrenberg's Uroglena are presented. In Uroglena, the cells are united by a branching system of cytoplasmic threads, which is produced as cells divide and separate, the cells have a pointed posterior end because of attenuation to the diameter of the connecting thread, and the whip flagellum is approximately one-half the length of the long pleuronematic flagellum. In Uroglenopsis, the cells are united by a branching system of gelatinous stalks, the cells are truncate at the posterior end, and the whip flagellum is at the most one-quarter the length of the long flagellum. A key to species is given and statospores of all species are illustrated. The close relationship of Skuja's Eusphaere/la to these genera is explored.

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