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Growth Forms of Aquatic Herbs in the Northeast of European Russia. P. 104–112

Версия для печати

Section: Biology

UDC

581.4

Authors

Yuriy A. Bobrov*
*Pitirim Sorokin Syktyvkar State University (Syktyvkar, Russian Federation)
Сorresponding author: Yuriy Bobrov, address: ul. Petrozavodskaya, 12, Syktyvkar, Republic of Komi, 167001, Russian Federation;
e-mail: orthilia@yandex.ru

Abstract

The paper presents the study results of aquatic herbs biomorphology of the northeast of the European part of Russia. Based on the comparative morphological analysis, I identified the most important structural elements of individuals of these species in the generative period. 10 variants of growth forms are described according to the methodology of I.G. Serebryakov. The growth form of Nuphar lutea and N. pumila, Nymphaea candida and N. tetragona is defined as a rhizome non-core perennial polycarpic herbaceous plant, the biomorph Hippuris vulgaris ‒ as an underground perennial polycarpic herbaceous plant. I suggest not to include these growth forms in the taxon “Aquatic herbs” of the I.G. Serebryakov’s system. By the author’s understanding, this part consists of 2 types: monocarpic and polycarpic errant herbs. In the last taxon, 4 classes are distinguished: leafy, raceme-radical stolons, long-shooting stolons, and long-shooting errant polycarpous plants. 8 growth forms are referred to the part under consideration: leafy errant plant (Lemna gibba, L. minor, L. turionifera, Spirodela polyrhiza), stolon and leafy errant plant (L. trisulca), stolon and raceme-radical errant plant (Lobelia dortmanna and Stratiotes aloides), stolon and raceme-radical errant plant with the annual shoot system (Hydrocharis morsus-ranae and Sagittaria natans), stolon and long-shooting errant plant (Batrachium circinatum, B. eradicatum, B. kauffmannii, B. trichophyllum and Ranunculus pallasii), long-shooting errant plant (Ceratophyllum demersum, Myriophyllum spicatum, M. sibiricum, M. verticillatum, Elodea canadensis, Utricularia intermedia, U. minor, U. vulgaris, Persicaria amphibia, Potamogeton acutifolius, P. alpinus, P. berchtoldii, P. compressus, P. crispus, P. filiformis, P. friesii, P. gramineus, P. lacunatus, P. lucens, P. natans, P. obtusifolius, P. pectinatus, P. perfoliatus, P. praelongus, P. trichoides and their hybrids), long-shooting errant plant and a long-shooting errant annual plant (different individuals of Callitriche cophocarpa, C. hermaphroditica and C. palustris).

Keywords

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References

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