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The paper presents new data on the composition of bryophyte species in the Bulgarka Nature Park. A total of 103 bryophyte species have been identified (17 liverworts and 86 mosses). Comments are offered on the distribution of Dicranum viride, Leucobryum glaucum and on the debatable report of Dichelyma falcatum and Trichocolea tomentella, two species rare for Bulgaria. [ABSTRACT FROM AUTHOR]

The aim of the paper is to report data about the distribution, habitat preferences and naturalisation success of three ornamental taxa cultivated in Bulgaria. Hemerocallis fulva (Asphodelaceae), a native species to temperate Asia, has been recorded as an established alien in eight floristic regions in the country. Oxalis articulata (Oxalidaceae), native to temperate South America, has been recorded as a casual species in three floristic regions. Phalaris arundinacea var. picta (Poaceae) has white variegated leaves and is a popular garden cultivar of a native to Bulgaria species. It has been recorded as an established alien in three floristic regions. Although H. fulva and Ph. arundinacea var. picta may form relatively wide, monodominant stands through vegetative reproduction, at this stage the two taxa do not show invasive behaviour in the Bulgarian flora. Photographs and distribution maps of the species are provided. [ABSTRACT FROM AUTHOR]

Circaea alpina is already known in the flora of Bulgaria from Yundola, Lokvensko Dere locality (West Rhodope Mts). However, information on it is based only on a single publication 70 years ago, not documented with any herbarium materials. The species has not been confirmed subsequently for Bulgaria and was evaluated as Data Deficient in the Red List of Bulgarian vascular plants. This paper offers new data on the second established locality of the species in Bulgaria, as well as some information on its ecology and conservation status in the country. The new locality was found comparatively far from the first one, in the Mt Etropolska Divide - part of Central Balkan Range. The discovered population was very small (about 30 individuals) and inhabited some silicate rocky walls. The new record requires reassessment of the conservation status of Circaea alpina in Bulgaria. [ABSTRACT FROM AUTHOR]

Mollugo verticillata L., a new alien species for the Bulgarian flora, was collected from the Valley of River Struma (South) floristic subregion in 2018. The paper presents a concise morphological description of the species, with comparison to the similar M. cerviana (L.) Ser. Information on its distribution and ecology in Bulgaria is provided and the species invasive status is commented on. [ABSTRACT FROM AUTHOR]