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Status of Carex bergrothii (Cyperaceae) on Gotland, SE Sweden
Author(s) -
Hedrén Mikael
Publication year - 1998
Publication title -
nordic journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.333
H-Index - 33
eISSN - 1756-1051
pISSN - 0107-055X
DOI - 10.1111/j.1756-1051.1998.tb01097.x
Subject(s) - cyperaceae , ecotype , carex , biology , calcareous , botany , ecology , poaceae
Material of Carex oederi s.lat. was studied at four localities on the Baltic island of Gotland. Each locality included material referable to C. bergrothii , i.e., tall sedges with long leaves and with comparatively large and broad utricles, as well as material of C. oederi s.str., i.e., short sedges with smaller utricles. Univariate and multivariate statistical analyses show continuous variation in C. oederi s. lat. on Gotland and it is concluded that C. bergrothii cannot be recognised as a separate species. However, a large proportion of the phenotypic variance in C. oederi s. lat. on Gotland is due to genotypic differentiation, and C. bergrothii is considered as an extreme ecorype of C. oederi . This ecotype is apparently adapted to grow in deep water on calcareous clay among loose stands of Cladium mariscus .