Morphology of spores and moss-capsules of sphagnousmosses of the section cuspidata (lindb.) schlieph. of the West Siberia

The article gives the description and analysis of both spores and moss-capsules morphologymosses of the section Cuspidata (Lindb.) Schlieph., of the genus Sphagnum L.,met in the territory of the West-Siberian plain. Investigations into the spore morphologywere carried out with the SEM-method. As a result, the spores were divided into fourmorphological groups according to the character of a sculpture and the surface of anexosporium: smooth, without knobs and granularity - S. balticum; smooth, withoutknobs, coarse-grained -S. flexuosum; knobby, with different degree of granularity intensity- S. fallax, S. jensenii, S. lenense, S. lindbergii, S. majus, large knobby - S. angustifolium.According to a spore size the spores were attributed to three categories: small(15-20 mcm) - S. lenense; medium (20-25 mcm) - S. angustifolium, S. balticum, S. fallax,S. flexuosum; large (> 25 mcm) - S. jensenii, S. lindbergii, S. majus. While visual assessmentof moss-capsules coloration and a spore colour, their species- specificity wasestablished according to a given property. The colour of a mature moss-capsule is characterizedwith brown tinges, S. angustifolium has a more dark colour (up to black),S. fallax - reddish. The spores in the majority of species were yellow, in S. flexuosum -red, in S. majus - up to reddish and brown.

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