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Ukr. Bot. J. 2013, 70(1): 68–73
https://doi.org/10.15407/ukrbotj70.01.068
Plant Taxonomy, Geography and Floristics

Morphological and taxonomic differentiation of the species Bromus squarrosus L. and B. japonicus Thunb. ex Murray (Poaceae) in the flora of Ukraine

Krasniak O.I., Anishchenko I.M.
Abstract

In order to ascertain the structure and circumscription of species of the Bromus squarrosus and B. japonicus complex, the comprehensive morphological research was conducted. Using discriminant analysis, high similarity between specimens of B. japonicus with haired and glabrous spikelets, and between specimens of B. squarrosus with haired (B. wolgensis) and glabrous spikelets was demonstrated. Taxonomic level of varietas for B. squarrosus var. villosus Roth and B. japonicus var. velutinus Asch. & Graebn. is confirmed. According to the results of discriminant analysis, B. squarrosus and B. japonicus should be accepted as two separate species. The specimens with features of B. anatolicus growing on the Ukrainian territory cannot be considered as a separate species and should be treated as an integral part of B. japonicus. Some diagnostic characters at the species level are critically reviewed.

Keywords: Bromus squarrosus, B. japonicus, B. anatolicus, B. wolgensis, morphology, taxonomy, morphometry

Full text: PDF (Ukr) 466K

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