Two new alien records of Hordeum jubatum (Poaceae) and Tripleurospermum inodorum (Asteraceae) in Mongolia

Abstract

Hordeum jubatum L. and Tripleurospermum inodorum (L.) Sch. Bip. are cur-rently recorded as non-native in the flora of Mongolia. Hordeum jubatum can easily be distinguished from other Mongolian Hordeum species by its glumes that are much (usually more than 10×) longer than the floret. Tripleurospermum inodorum differs from T. limosum (Maxim.) Pobed. by its annual or biennial plants without rhizomes, branched stems, and capitulae. The present study provides descriptions, a distribution map, taxonomic keys, taxonomic notes, and photographic illustrations of the two species based on newly collected samples.