Permalink : http://hdl.handle.net/2115/85001

JaLCDOI : 10.14943/lowtemsci.80.225

KEYWORDS : 現地調査;車軸藻植物;水生維管束植物;水生蘚苔類;標本調査;aquatic moss;aquatic vascular plants;charophytes;field survey;herbarium survey

標本調査と現地調査の結果，尾瀬沼とその周辺湿原から17科34種1変種の水生維管束植物と2種の水生蘚苔類，2種の車軸藻植物が確認された．このうちショウブ，ガマ，ホソバミズヒキモ，シズイは今回初めて報告された．ショウブとガマは2000年代初頭には生育していたと考えられる．過去に記録があるササエビモ，フトイ，ホザキノフサモ，コタヌキモはそれぞれエゾヒルムシロ，オオフトイ，フサモ，ヤチコタヌキモと考えられる．
A combination of field and herbarium surveys recorded a total of 34 plant species, one variety of aquatic vascular plant, two aquatic moss species and two charophyte species in Lake Ozenuma and the wetlands surrounding the lake. As a result of the surveys, Acorus calamus L., Typha latifolia L., Potamogeton octandrus Poir. and Schoenoplectus nipponicus (Makino) Soják were newly recorded in the area. However, the former two species are presumed to have occurred in the region in the early of the 2000s. Further, four of the species that were previously recorded as being distributed in the region were considered to have been misidentified; i.e. specimens previously identified as P. nipponicus Makino, S. tabernaemontani (C.C.Gmel.) Palla, Myriophyllum spicatum L. and Utricularia intermedia Heyne were identified as P. gramineus L., S. lacustris (L.) Palla， M. verticillatum L. and U. ochroleuca R.W.Hartm in this study, respectively.