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ANNUAL OF SOFIA UNIVERSITY „ST. KLIMENT OHRIDSKF
FACULTY OF BIOLOGY
Book 2 - Botany
Volume 97, 2005
ANNUAIRE DE L’UNIVERSITE DE SOFIA „KLIMENT OHRIDSKI"
FACULTE DE BIOLOGIE
Livre 2 - Botanique
Tome 97, 2005
NEW DATA AND SUMMARIZED INFORMATION
ON THE CHOROLOGY OF SOME RARE,
THREATENED AND ENDEMIC PLANTS
IN THE MIDDLE DANUBE PLAIN
AND BALKAN FOOTHILL REGION
ROSSEN TZONEV
Department of Ecology, Faculty of Biology, 8 Dragan Tsankov Blvd, 1164 Sofia;
Abstract: Field research revealed new and updated information about localities of rare,
threatened or endemic plants for this part of Bulgaria. This information will be useful for the new
edition of The Red Data Book of Bulgaria.
Key words
: endemic, rear and threatened plants, Middle Danube Plain, Balkan Fothill region
5120.21250.
MARSILEA QUADRIFOLIA
L. - LJ-31; LJ-43,
SC
(R.TZ.); SO-100034, 100035, 101695
Middle Danube plain, in drainage canals and fishponds in the locality
,,Gerena“, village of Obnova, 11. 09.1999, and in the central drainage canal
in the Belene floodplain, 4.06.2001.
This rare species is enlisted in Annex I of the Bern Convention and Annex
II of Council Directive 92/43/EEC. The distribution of the species in the past
included some of the marshes along the Danube (drained down today), rice
fields along the Maritza river in the Thracian valley and floods along the
Struma River at the village of Chuchuligovo ( Ах т а р о в , Й о р д а н о в ,
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Электронная Научная СельскоХозяйственная Библиотека