Features of morpho-anatomic structure of vegetative organs of Sedum antiquum Omelcz et Zaverucha (Crassulaceae DC.)

Abstract

Valentyna Berezkina

The study results of biological features and morpho-anatomical structure of vegetative organs of Sedum antiquum Omelcz et Zaverucha (Crassulaceae DC.) are given. S. antiquum is Eastern Carpathian-Opillia rare endemic species. It is listed in the Red Book of Ukraine and in the European Red List of Animals and Plants and is endangered in world scale. As a result of study of morpho-anatomic structure of leaves and stems of S. antiquum the anisocytic type of stomata and presence of cuticle have been determined. It was ascertained that structure of leaves is adapted to the accumulation of significant water reserves and its further gradual use. Ecological and phytocenotic conditions of growth are studied too. S. antiquum has been determined here as petrophyte, calcephyl, and succulent ephemer. This rare species need protection and control of population state in all natural habitats.