Pisarenko O.Yu.1 2006. On the variation and ecology of Pterygoneurum subsessile and P. kozlovii (Pottiaceae, Bryophyta) // Arctoa. Vol. 15: 169–182 [in English].

1 Central Siberian Botanical Garden, Zolotodolinskaya 101, Novosibirsk 630090 Russia; e-mail: o_pisarenko@mail.ru

KEYWORDS: morphology, variability, ecology, Pterygoneurum subsessile, Pterygoneurum kozlovii, South Siberia, Kazakhstan, Yakutia

ABSTRACT. Pterygoneurum kozlovii, a rare species worldwide, is found in Altaisky Territory, Kazakhstan and Central Yakutia, mainly in halophytic habitats. Study of morphology and anatomy of P. subsessile and P. kozlovii reveals certain intergradation between typical morphotypes of these two species. Quantitative characteristics of plants and their illustrations are given, demonstrating complex situation in this group.

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