Revision of the genus Hordeum (Poaceae) in Altai Territory

Abstract

The article presents a revision of the genus Hordeum (Poaceae) in Altai Territory based on the morphological study and field observation. We examined over 250 examples deposited in the ALTB, KUZ, NS, NSK, TK herbaria and recognized the following species: H. bogdanii Wilensky, H. brevisubulatum (Trin.) Link subsp. brevisubulatum, H. brevisubulatum (Trin.) Link subsp. nevskianum (Bowden) Tzvelev, H. caespitosum Scribn., H. distichon L., H. jubatumL., and H. roshevitzii Bowden. For the first time, H. caespitosum and H. distichon misidentified previously as H. murinum and H. vulgare respectively are reported in this region. The presence of H. murinum in this territory is not confirmed. The article suggests an updated key for identifying species of the genus Hordeum, specifies the distribution, provides the information on habitats and the illustrations of the main characters.