Notes on the taxonomy and distribution of species of the Dryopteris dilatata complex in the Caucasus, Siberia and the Far East

The <i>Dryopteris dilatata</i> complex in the Caucasus, Siberia and the Far East was studied on the herbarium material from the Komarov Institute of Botany in Leningrad. The macromorphological characters of the sporophyte as well as the morphology and colour of spores were used. It has been found that <i>Dryopteris extremiorientalis</i> V. Vasil., regarded as an endemic taxon for the Far East, is conspecific with <i>Dryopteris assimilis</i> S. Walker, and <i>Dryopteris Alexeenkoana</i> Fom., regarded as a West Caucasian endemic species is identical with Dryopteris dilatata (Hoffm.) A. Gray, em. S. Walker. In .the paper the distribution of <i>D. assimilis</i> in the Asiatic part of the USSR was given.

Lectotypification of Stipa czerepanovii (Poaceae)

Lectotypification of Stipa czerepanovii (Poaceae) The paper presents lectotypification of Stipa czerepanovii Kotuch. described from the Zaisan basin (eastern Kazakstan). The material designated as the type of Stipa czerepanovii is deposited in the herbarium of the Komarov Institute of Botany, Russian Academy of Sciences (St.-Petersburg) and composed of three sheets. However, specimens on one of the sheets, represent other species of Stipa, and according the Viena code the lectotype should be designated.