01437nas a2200169   4500008004100000245008100041210006900122300001000191490000800201520091500209653001201124653002201136653002401158100001701182700001801199856005001217       1999                        eng d00aOn the ecology and history of an inland occurrence of Triglochin maritima L.0 aecology and history of an inland occurrence of Triglochin mariti  a45-540 v1773 aThe present paper describes an inland occurrence of Triglochin maritima L. discovered in northern Kuusamo, in northeast Finland. The species grows over a large area of a fen which is exceptionally rich in electrolytes, and resembles in that respect the coastal sites of the plant. The most abundant electrolyte in the Kuusamo fen, however, is calcium, not sodium or chloride as on the coast. The differences between the coastal and inland growing sites can also be seen in the chemical analyses of the plants. Thus it can be maintained that the species requires a high electrolyte content, but not necessarily the presence of sodium chloride.The origin of the occurrence in Kuusamo goes back to the Preboreal period, from whence onwards it has remained in isolation from the coastal populations. The inland occurrence further illuminates certain aspects in the history of the Primula sibirica group of species.10aFinland10ainland occurrence10aTriglochin maritima1 aHavas, Paavo1 aVasari, Yrjö  uhttps://juncaginaceae.myspecies.info/node/140