Carex disperma – not yet extinct species in old-growth swampy forests of Lithuania

Abstract

Uselis V., Uselienė A., 2012: Carex disperma - not yet extinct species in old-growth swampy forests of Lithuania [Carex disperma - dar neišnykusi pelkinių sengirių rūšis Lietuvoje]. - Bot. Lith., 18(1): 13-18. The paper describes the locality of Carex disperma reaffirmed after a century; the locality is situated in the present territory of the Viešvilė State Strict Nature Reserve. Plants were found in an old swampy spruce forest, which, according to the geobotanical description, corresponds to the Sphagno girgensohnii-Piceetum Polak. 1962 association. The stand is rich in indicator species of an old-growth forest. Twelve Carex disperma individuals, growing in the area of 3 m2, were recorded in 2009. One more locality has recently been found in Utena region, but it has not been published in scientific references yet. Information on other localities of this species in Lithuania is either very old (mid-19th century) or not confirmed by the herbarium specimens.