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The paper publishes the first records of the occurrence of a native species Sonchus palustris and three alien species Eryngium giganteum, Inula ensifolia and Medicago orbicularis in South Bohemia. New localities of rare native or rare alien taxa and threatened or otherwise important taxa of the South Bohemian flora are reported and described: Carex otrubae, Ceratophyllum submersum, Cynodon dactylon, Dipsacus laciniatus, Erysimum cheiri, Erucastrum gallicum, Geranium macrorrhizum, Hieracium bifidum, Lathyrus nissolia subsp. pubescens, Rubus centrobohemicus, Sisymbrium orientale subsp. orientale, Sorghum bicolor, Thelypteris palustris and Trifolium fragiferum. For some of the species mentioned above, regional distribution or known localities are only updated or supplemented here. Particularly, the record of Verbena offi- cinalis near the village of Ratiborova Lhota in the Chvalšinské Předšumaví phytogeographical district was found to be wrong. [ABSTRACT FROM AUTHOR]

This paper presents the first record of the occurrence of Pilosella ×iserana, a new taxon for South Bohemia. New localities of rare native or rare alien taxa and threatened or otherwise important taxa of the South Bohemian flora are reported and described: Aphanes arvensis, Cardamine chelidonia, Crepis foetida subsp. rhoeadifolia, Corydalis solida, Dianthus superbus, Diphasiastrum ×zeilleri, Equisetum hyemale, Hibiscus trionum, Hieracium levicaule, Nicandra physalodes, Ornithopus perpusillus, Pilosella floribunda, Polystichum aculeatum, Potamogeton nodosus, Rubus capricollensis, Silene baccifera, Veronica vindobonensis and Vulpia myuros. For some of the above species, regional distribution or known localities are only updated or supplemented here. [ABSTRACT FROM AUTHOR]

The paper publishes the first record of the occurrence of Vallisneria spiralis, a new alien taxon for South Bohemia. New localities of rare native or rare alien taxa and threatened or otherwise important taxa of the South Bohemian flora are reported and described: Allium senescens subsp. montanum, Anacamptis morio, Aphanes arvensis, Cephalanthera longifolia, Crepis praemorsa, Dianthus superbus, Diphasiastrum xissleri, Eleocharis uniglumis subsp. uniglumis, Gagea villosa, Galeopsis pernhofferi, Hieracium bifidum, Hydrocotyle vulgaris, Hypericum hirsutum, Lathyrus linifolius, Leucojum vernum, Luzula divulgata, Meum athamanticum, Montia fontana subsp. amporitana, Petrorhagia saxifraga, Pilosella lactucella, P. macranthela, P. piloselloides, P. schultesii, Rosa gallica, Rubus passaviensis, Salvia hispanica, Triglochin palustris, Valerianella carinata, Viola stagnina and Viscum album subsp. abietis. Regional distribution or known localities of some of the above species are updated or supplemented here. [ABSTRACT FROM AUTHOR]

Plants Dactyloctenium aegyptium, Dentaria glandulosa, Eragrostis pilosa, Euphorbia prostrata, Guizotia abyssinica, Knautia arvensis subsp. pannonica, Panicum dichotomiflorum have been found as new alien taxa for South Bohemia. New localities of rare native or rare alien taxa of the South Bohemian flora are reported and described: Ajuga pyramidalis, Alchemilla propinqua, Allium ursinum, Anacamptis morio, Arnoseris minima, Cardamine trifolia, Carex otomana, C. pendula, Centaurea montana, Corydalis intermedia, Crepis mollis subsp. succisifolia, Dactylorhiza ×braunii nothosubsp. braunii, Diplotaxis tenuifolia, Gagea minima, Geranium molle, Gymnadenia conopsea, Hieracium maculatum, Hydrocharis morsus-ranae, Lunaria rediviva, Myosotis sparsiflora, Nymphaea candida, Ophioglossum vulgatum, Papaver dubium, Petrorhagia saxifraga, Pilosella aurantiaca, Sagittaria latifolia, Saxifraga tridactylites, Schoenoplectus tabernaemontani, Senecio vernalis, Silaum silaus, Thymus serpyllum, Th. ×oblongifolius and Valerianella carinata. Regional distribution or known localities of some of the above species are updated or supplemented here. [ABSTRACT FROM AUTHOR]

Hybrid of Pilosella bauhini × P. glomerata × P. officinarum has been found as a new native taxon for the Czech Republic and Clarkia amoena and Knautia macedonica have been discovered as new alien species for the Czech flora. Species Acer tataricum, Heliopsis helianthoides, Ranunculus illyricus and Salvia hispanica have been recorded as aliens for the first time in South Bohemia. New localities of rare native or rare alien taxa of the South Bohemian flora are reported and described: Achillea pratensis, Ajuga pyramidalis, Allium ursinum, Carex elata, Centunculus minimus, Chamaecytisus supinus, Corydalis cava, Dianthus sylvaticus, Dryopteris borreri, D. cambrensis, D. expansa, Elatine triandra, Eleocharis mamillata subsp. austriaca, E. m. subsp. mamillata, Elymus hispidus, Epilobium parviflorum, Equisetum pratense, Erigeron macrophyllus, Euphrasia stricta, Galeopsis pernhofferi, Gentianella praecox subsp. bohemica, Hieracium maculatum, Leucanthemum ×superbum, Neottia nidus-avis, Orchis militaris, Persicaria mitis, Pilosella aurantiaca, P. norrliniiformis, P. piloselloides, P. stoloniflora, Pinus ×celakovskiorum, Polycnemum majus, Potentilla lindackeri, P. norvegica, P. recta, Rosa marginata, Rubus centrobohemicus, R. sprengelii, Taxus baccata, Verbena officinalis, Vicia cassubica, V. lathyroides and Viscum album subsp. abietis. Regional distribution or known localities of some of the above species are updated or supplemented here. [ABSTRACT FROM AUTHOR]

Pilosella pilosellina has been found as a new native taxon for South Bohemia and Galanthus woronowii and Carex hordeistichos have been discovered as new alien species. New localities of rare native or rare alien taxa of the South Bohemian flora are reported and described: Ajuga ×pseudopyramidalis, Alchemilla crinita, A. propinqua, Aphanes arvensis, Asperugo procumbens, Barbarea stricta, Berberis thunbergii, Bromus commutatus, Carex otomana, C. otrubae, C. pendula, Cerastium dubium, Consolida regalis subsp. regalis, Dianthus sylvaticus, Equisetum pratense, Hieracium bifidum, H. maculatum, Lathraea squamaria, Myriophyllum alterniflorum, Orchis morio subsp. morio, Orobanche minor, Ribes alpinum, Rubus fabrimontanus, R. salisburgensis, R. silvae-norticae, Sagittaria latifolia, Stratiotes aloides, Thesium alpinum, Vicia lathyroides and Valerianella rimosa. Regional distributions or known localities of some of the above species are updated or supplemented here. [ABSTRACT FROM AUTHOR]

The hybrid Pilosella glomerata x Pilosella bauhini has been found as a new taxon for the Czech Republic and Cardamine parviflora, Eranthis hyemalis, Geranium macrorrhizum, Ornithogalum nutans, Peucedanum carvifolia, Tagetes tenuifolia, Verbena bonariense and Viburnum rhytidophyllum are reported from South Bohemia for the first time. New localities of rare native or rare alien taxa of the South Bohemian flora are reported and described: Achillea pratensis, Allium carinatum, Althaea officinalis, Amaranthus blitum, Antennaria dioica, Arctium nemorosum, Asplenium trichomanes subsp. trichomanes, Barbarea stricta, Campanula cervicaria, Cardamine dentata, Carex bohemica, C. cespitosa, C. rhizina, Cerastium semidecandrum, Chenopodium rubrum, Coeloglossum viride, Cyclamen purpurascens, Cyperus fuscus, Dactylis polygama, Dactylorhiza sambucina, Dipsacus laciniatus, Dryopteris cambrensis, Elatine triandra, Eleocharis ovata, Epilobium obscurum, Epipactis purpurata, Euphrasia stricta, Galeopsis pernhofferi, Hieracium obscuratum, Isolepis setacea, Lathraea squamaria, Leersia oryzoides, Lepidium didymus, Limosella aquatica, Lobularia maritima, Malaxis monophyllos, Myosotis caespitosa, Myosurus minimus, Nymphoidespeltata, Orchis mascula, Orobanche minor, Parnassia palustris, Persicaria mitis, Pilosella bauhini, P. piloselloides subsp. praealta, Pseudorchis albida, Pyrus pyraster, Ranunculus platanifolius, Rosa sherardii, Rumex hydrolapathum, Sagittaria sagittifolia, Salix repens, Scirpus radicans, Silaum silaus, Triglochin palustris, Veronica dillenii and Vicia lathyroides. Regional distribution or known localities of some of the above species are updated or supplemented here. [ABSTRACT FROM AUTHOR]

Cerastium dubium, Corylus colurna, Crepis foetida subsp. rhoeadifolia and Galium intermedium are reported from South Bohemia for the first time. New localities of rare native or rare alien taxa of the South Bohemian flora are reported and described: Castanea sativa, Cicerbita alpina, C. macrophylla, Corallorhiza trifida, Dianthus superbus subsp. superbus, Dryopteris borreri, D. cristata, Bromus japonicus, Buphthalmum salicifolium, Eriophorum latifolium, Euphrasia stricta, Fumaria vaillantii subsp. vaillantii, Hieracium maculatum, Luzula pallescens, Lythrum hyssopifolia, Neottia nidus-avis, Nuphar lutea, Muscari comosum, Omphalodes verna, Polystichum aculeatum, Ribes alpinum, Rubus muhelicus, R. perperus, R. schleicheri, Saxifraga tridactylites, Silene noctiflora and Viscum album subsp. album. Regional distribution or known localities of Arabis hirsuta, Carex hostiana, Rosa micrantha and Scabiosa ochroleuca are updated or supplemented here. [ABSTRACT FROM AUTHOR]