Finding of Some Alien Species of the Family Poaceae in Dagestan

Abstract

The paper provides information on new species of the Poaceae family that are alien to the flora of Dagestan and the Eastern Caucasus. These species have been identified in field studies and during the analysis of various herbarium collections in 2020–2022. For the flora of the Eastern Caucasus, Echinochloa tzvelevii and Setaria adhaerens are indicated for the first time. For the flora of Dagestan, the presence of feral cultivated species—Avena sativa, Lolium multiflorum, Sorghum drummondii, and Sorghum technicum—has been confirmed. For the first time for the flora of Dagestan, the quarantine species Cenchrus longispinus has been recorded. For each species, we present a brief description of its location and information on population status, phenophase, etc. Additionally, we assign each species an invasive status according to the criteria and guidelines used for the regional Black Books. Sorghum technicum and Cenchrus longispinus have a higher invasive potential (status 2), while the remaining five species (Avena sativa, Echinochloa tzvelevii, Lolium multiflorum, Sorghum drummondii, and Setaria adhaerens) have been found in disturbed and segetal communities (status 3).