The fern genus Pteridium in a trans Euro-Siberian perspective - a morphological synthesis /I. I. Gureeva, C. N. Page

Gureeva, Irina I.
Электронный ресурс
Другой Автор
Page, C. N.
Источник
Perspectives in pteridophytes : silver jubilee publication of Indian Fern Society (1983-2008) Dehradun, 2009 P. 243-254
Аннотация
The taxonomy and distribution of Pteridium Gled. ex Scop, is present across the broad west-east span of the Euro-Siberian region. It is concluded that at least two species of Pteridium - true P. aquiiinum (L.) Kuhn and P. pinetorum C.N. Page & R.R. Mill, are widely present. Of these, P. aquiiinum is restricted mainly to the western part of the Euro-Siberian region, P. pinetorum is dominant throughout much of Russia. In this territory, within P. aquiiinum we recognize at least three morphological distinctive races of subspecific rank - P. aquiiinum (L.) Kuhn subsp. aquiiinum (=P. aquiiinum (L.) Kuhn s. str.), P. aquiiinum (L.) Kuhn subsp. atlanticum C.N. Page and P. aquiiinum (L.) Kuhn subsp. fulvum C.N. Page, within P. pinetorum we recognise two slightly distinctive races - P. pinetorum C.N. Page & R.R. Mill subsp pinetorum and P, pinetorum C.N. Page & R.R. Mill subsp. sibiricum Gureeva & C.N. Page. We also expect, that in the south of Eastern Europe (in Crimea and the Caucasus) there is at least one more race, which belongs to P. aquiiinum P. aquiiinum(L.) Kuhn subsp. tauricum(C. Presl) Gureeva & C.N. Page comb. nov.
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Резюме
The taxonomy and distribution of Pteridium Gled. ex Scop, is present across the broad west-east span of the Euro-Siberian region. It is concluded that at least two species of Pteridium - true P. aquiiinum (L.) Kuhn and P. pinetorum C.N. Page & R.R. Mill, are widely present. Of these, P. aquiiinum is restricted mainly to the western part of the Euro-Siberian region, P. pinetorum is dominant throughout much of Russia. In this territory, within P. aquiiinum we recognize at least three morphological distinctive races of subspecific rank - P. aquiiinum (L.) Kuhn subsp. aquiiinum (=P. aquiiinum (L.) Kuhn s. str.), P. aquiiinum (L.) Kuhn subsp. atlanticum C.N. Page and P. aquiiinum (L.) Kuhn subsp. fulvum C.N. Page, within P. pinetorum we recognise two slightly distinctive races - P. pinetorum C.N. Page & R.R. Mill subsp pinetorum and P, pinetorum C.N. Page & R.R. Mill subsp. sibiricum Gureeva & C.N. Page. We also expect, that in the south of Eastern Europe (in Crimea and the Caucasus) there is at least one more race, which belongs to P. aquiiinum P. aquiiinum(L.) Kuhn subsp. tauricum(C. Presl) Gureeva & C.N. Page comb. nov.