10th Symposium on the Flora of Southeastern Serbia and ...

10 th <strong>Symposium</strong> on the Flora of Southeastern Serbia and Neighbouring regions,Vlasina 17 to 20 June 2010Rarely, threatened and relict species in flora NPA“Zasavica”Stanković, M.Special Nature Reserve “Zasavica”, Serbiazasavica@zasavica.org.rsFor the past 12 years research of flora in the Reserve Zasavica has recordedover 700 species of plants. Among the species noted has the relic, endemic andendangered. The most important finding in the flora of the reserve is insectivorglobally endangered species Aldrovanda vesiculosa which is the habitat of rare,endemic only in Serbia.As a tertiary relics of the Zasavica Stratiotes aloides, Trapa natans agg.,Aldrovanda vesiculosa, Hippuris vulgaris, Hottonia palustris and Ranunculuslingua, which grew on the shores of tropical wetlands around the Pannonian Sea.Cane zone along the coast and floating islands inhabited by glacial relics Urticakioviensis and Schaenoplectus triqueter for which the Peri Serbian southern borderarea, while Achillea asplenifolia, Pannonian subendem found on meadow and islocated on the southern border of its range. Tertiary relics are the remains of oncewidely spread marsh vegetation in Central and Southern Europe. As a tertiary relictTurrill (1929) singled out Butomus umbellatus, Hydrocharis morsus-rane andStratiotes aloides. Some species such as Nymphaea alba, Nuphar luteum, Salvinianatans and Nymphoides peltata were settled tertiary wetlands in Southern Europeindicate when hay analysis of peat and are not classified as a relic in todaywidespread in holoarctics. Since the Ice Age is characterized more and interglacialperiods glacial note that they occurred simultaneously very complex migration ofplants. According to Engler (1905) after the first glaciation formed the steppeinterglacial stages, where in Central Europe, instead established steppe tundravegetation and some of those plants in postglacial age endene steppe periods. Duringthe upcoming II glaciation in the Central and Southern Europe are retained as part ofthe glacial and partly as interglacial species Ceratophyllum demersum (Gajic, 1984).Four types of relicts growing on Zasavica are critically endangered species in theflora of Serbia.The present flora of the reserve, five from six critically endangered speciesand Hippuris vulgaris, Hottonia palustris, Ranunculus lingua, Aldrovandavesiculosa and Lindernia procumbens, and the last one listed are suggested for thesecond edition of the "Red book of flora of Serbia". Groenlandia densa kind ofdance Jurisic (1901) states for the flora and Zasavica bollard, but unfortunately inmodern research has not found its presence (Randjelovic, 1999). The status ofendangered species (EN-VU) are present Callitricha verna, Callitricha stagnalis,Utricularia australis, Urtica kioviensis and Schaenoplectus triqueter, while the66