Морфология спор видов ряда Variantia рода Asplenium (Aspleniaceae) из Байкальской Сибири

The method of scanning electronic micros­copy is applied for comparative study of morphology of spores in 3 representatives of Asplenium ser. Variantia ( A. altajense , A. nesii , A. tenuicaule ) from the Baikal Si­beria. Morphological differences among the studied spe­cies are revealed in the perisporium structure, presence/ ansence of outgrowths and number of perforations.