<i>lcea froloviana </i>(Litv.) Iljin and <i>Nuphar lutea </i>(L.) Smith - are rare plants of flora of Kazakhstani Altai
The article presents phytocoenosis characteristic of habitats and ecological - biological features of unique and rare plants in the flora of South - west Altai in Kazakhstan. Location of both species in the South - western Altai was found only in the foothills of the ridge Uba. Alcea froloviana takes a well - lit and heated top, the north - eastern and south - western microslopes ridges, where a part of the sparse shrub formations. Depending on the composition and structure of the grass with the presence of Alcea froloviana allocated two coenopopulations: Alcea froloviana , Elytrigia repens (L.) Nevski, Galatella punctata (Waldst. Et Kit.) Nees, Artemisia vulgaris L. and Peucedanum morisonii Dess.ex Spreng., Artemisia sericea Web. Ex Stechm., Galium verum L., Fragaria viridis Duch. phytocenoses. By area, Alcea froloviana available, mostly loose groups of 3-5 individuals, mainly on the periphery of the bushes. Within Southwest Altai was found and examined one cenopopulation of Nuphar lutea . Coenopopulation of Nuphar lutea has normal type, represented mainly generative individuals as part of phytocenosis formed by small plants.The age composition and seed production of coenopopulations are young, progressive, and capable of self renewal. Identified limiting factors for Alcea froloviana - grazing, spring burning stubble, plowing foothill steppe shrub communities; for Nupha rlutea - the lack of suitable habitat.