EPPO Global Database

EPPO Reporting Service no. 06 - 2006 Num. article: 2006/135

Catalogue of alien plants in the Czech Republic


This study presents a list of the 1378 alien taxa in the Czech Republic (33.4% of the total flora). Czech alien flora consists of 24.1% of taxa which arrived before 1500 (archaeophytes) and 75.9% neophytes. There are 891 casual, 397 naturalized and 90 invasive species. Of introduced neophytes, 21.9% became naturalized and 6.6% invasive. The proportion of hybrids amounts to 13.3% of the total number of alien plants, and hybridization is more frequent in archaeophytes (18.7%) than in neophytes (11.7%). When the 184 hybrids are excluded from the total number of alien plants, the Czech flora includes 270 archaeophytes and 924 neophytes (i.e. in total 1194 taxa). Accidental arrivals account for 53.4% of all taxa and deliberate introduction for 46.6%; the ratio is reversed for neophytes considered separately (45.5 vs. 54.5%). The majority of alien plants (62.8%) are confined to human-made habitats, 11% were recorded exclusively in natural or seminatural habitats, and 26.2% occur in both types of habitats.

The invasive species recorded by this study are the following (species in bold type are listed on the EPPO List of invasive alien plants):

Taxon
Family
Origin
Life form
Habitats
N° Localities
Introduction
Acer negundo
Aceraceae
N-Am
Tree
Natural, seminatural and human-made
over 500
Deliberate
Ailanthus altissima
Simaroubaceae
Asia
Tree
Natural, seminatural and human-made
50-499
Deliberate
Amaranthus powelii
Amaranthaceae
C&S Am
Annual
Human-made
over 500
Accidental
Amaranthus retroflexus
Amaranthaceae
N & C Am
Annual
Human-made
over 500
Accidental
Ambrosia artemisiifolia
Asteraceae
N-Am
Annual
Human-made
over 500
Accidental
Amorpha fruticosa
Fabaceae
N-Am
Shrub
Seminatural
15-49
Deliberate
Angelica archangelica subsp. Archangelica
Apiaceae
Eur., Asia
Biennial, perenial
Natural, seminatural and human-made
over 500
Deliberate
Apera spica-venti
Poaceae
Eur-Asia
Annual
Human-made
50-499
Accidental
Arrhenatherum elatius subsp. elatius
Poaceae
Eur.
Perenial
Natural, seminatural and human-made
over 500
Accidental
Aster lanceolatus
Asteraceae
N-Am
Perenial
Seminatural and human-made
over 500
Deliberate
Aster novi-belgii
Asteraceae
N-Am
Perenial
Seminatural and human-made
50-499
Deliberate
Aster xsalignus
Asteraceae

Perenial
Seminatural and human-made
15-49
Deliberate
Aster versicolor
Asteraceae

Perenial
Seminatural and human-made
15-49
Deliberate
Atriplex oblongifolia
Chenopodiaceae
Eur, Asia, Africa
Annual
Human-made
over 500
Accidental
Atriplex sagittata
Chenopodiaceae
Eur, Asia
Annual
Human-made
over 500
Accidental
Ballota nigra
Lamiaceae
Eur, Asia, Africa
Perenial
Seminatural and human-made
over 500
Accidental

Bidens frondosa
Asteraceae
N-Am
Annual
Natural, seminatural and human-made
over 500
Accidental
Brassica nigra
Brassicaceae
Eur
Annual
Seminatural and human-made
15-49
Accidental, Deliberate
Bryonia alba
Cucurbitaceae
Eur., Asia
Perenial
Seminatural and human-made
over 500
Deliberate
Bunias orientalis
Brassicaceae
Eur., Asia
Biennial, perenial
Seminatural and human-made
50-499
Accidental
Cannabis ruderalis
Canabinaceae
Asia
Annual
Human-made
50-499
Accidental
Cardaria draba
Brassicaceae
Eur., Asia
Perenial
Human-made
over 500
Accidental
Chenopodium ficifolium
Chenopodiaceae
Eur., Asia
Annual
Seminatural and human-made
over 500
Accidental
Chenopodium pedunculare
Chenopodiaceae
Eur.
Annual
Seminatural and human-made
over 500
Accidental, deliberate
Cirsium arvense
Asteraceae
Eur., Asia
Perenial
Seminatural and human-made
over 500
Accidental
Cirsium vulgare
Asteraceae
Eur., Asia
Perenial
Seminatural and human-made
over 500
Accidental
Conium maculatum
Apiaceae
Eur, Asia, Africa
Annual, biennial
Human-made
over 500
Accidental
Conyza canadensis
Asteraceae
N-Am.
Annual
Human-made
over 500
Accidental
Cuscuta campestris
Convolvulaceae
N-Am.
Annual
Human-made
15-49
Accidental
Cytisus scoparius subsp scoparius
Fabaceae
Eur.
Shrub
Natural, seminatural and human-made
over 500
Deliberate
Digitalis purpurea
Scrophulariaceae
Eur.
Biennial, perenial
Natural, seminatural
over 500
Deliberate
Echinocystis lobata
Cucurbitaceae
N-Am.
 
Natural, seminatural and human-made
50-499
Deliberate
Echinops sphaerocephalus
Asteraceae
Eur., Asia
 
Seminatural and human-made
over 500
Deliberate
Elodea canadensis
Hydrocharitaceae
N-Am.
 
Natural, seminatural and human-made
over 500
Accidental
Epilobium ciliatum
Onagraceae
N & C Am.
 
Natural, seminatural and human-made
over 500
Accidental
Erigeron annuus subsp. septentrionalis
Asteraceae
N-Am.
Annual, Biennal
Human-made
over 500
Accidental
Fraxinus pennsylvanica
Oleaceae
N-Am.
Tree
Natural, seminatural and human-made
50-499
Deliberate
Galeobdolon argentatum
Lamiaaceae
 
Perenial
Natural, seminatural and human-made
50-499
Deliberate
Galinsoga ciliata
Asteraceae
C & S Am.
Annual
Human-made
over 500
Accidental
Galinsoga parviflora
Asteraceae
S-Am.
Annual
Human-made
over 500
Accidental
Geranium pyrenaicum
Geraniaceae
Eur., Asia
Biennial, perenial
Human-made
over 500
Accidental, deliberate
Helianthus tuberosus
Asteraceae
N-Am.
Perenial
Natural, seminatural and human-made
over 500
Deliberate
Heracleum mantegazzianum
Apiaceae
Eur.
Biennial, Perenial
Natural, seminatural and human-made
over 500
Deliberate
Impatiens glandulifera
Balsaminaceae
Asia
Annual
Natural, seminatural and human-made
over 500
Deliberate

Impatiens parviflora
Balsaminaceae
Asia
Annual
Natural, seminantural
over 500
Deliberate
Imperatoria ostruthium
Apiaceae
Eur.
Perenial
Seminatural and human-made
over 500
Deliberate
Juncus tenuis
Juncaceae
N-Am.
Perenial
Seminatural and human-made
over 500
Accidental
Kochia scoparia
Chenopodiaceae
Eur., Asia
Annual
Human-made
over 500
Accidental
Lupinus polyphyllus
Fabaceae
N-Am.
Perenial
Natural, seminatural
over 500
Deliberate
Lycium barbatum
Solanaceae
Eur., Asia
Shrub
Natural, seminatural and human-made
over 500
Deliberate
Mahonia aquifolium
Berberidaceae
N-Am.
Shrub
Natural, seminatural and human-made
over 500
Deliberate
Matricaria discoidea
Asteraceae
Asia
Annual
Human-made
over 500
Accidental
Melilotus albus
Fabaceae
Eur., Asia
Biennial, annual
Seminatural and human-made
over 500
Accidental, deliberate
Melilotus officinalis
Fabaceae
Eur., Asia
Biennial
Seminatural and human-made
over 500
Accidental, deliberate
Mimulus guttatus
Scrophulariaceae
N-Am.
Perenial
Natural, seminatural
over 500
Deliberate
Myrrhis odorata
Apiaceae
Eur.
Perenial
Natural, seminatural
over 500
Deliberate
Oenothera bienis
Onagraceae
 
Biennial, annual
Seminatural and human-made
over 500
Accidental, deliberate
Orobanche minor
Orobanchaceae
Eur, Asia, Africa
Biennial, perenial
Human-made
15-49
Accidental
Parthenocissus inserta
Vitaceae
N-Am.
Shrub
Natural, seminatural and human-made
over 500
Deliberate
Persicaria polystachya
Polygonaceae
Asia
Perenial
Seminatural and human-made
15-49
Deliberate
Physocarpus opulifolius
Rosaceae
N-Am.
Shrub
Natural, seminatural and human-made
50-499
Deliberate
Pinus strobus
Pinaceae
N-Am.
Tree
Natural
over 500
Deliberate
Plantago major subsp. major
Plantaginaceae
Eur, Asia, Africa
Perenial
Human-made
over 500
Accidental
Populus x canadensis
Salicaceae
 
Tree
Seminatural and human-made
50-499
Accidental, deliberate
Prunus serotina
Rosaceae
N-Am.
Tree, Shrub
Natural, seminatural
50-499
Deliberate
Reynoutria x bohemica
Polygonaceae
 
Perenial
Natural, seminatural and human-made
over 500
Accidental, deliberate
Reynoutria japonica var. japonica
Polygonaceae
Asia
Perenial
Seminatural and human-made
over 500
Deliberate
Reynoutria sachalinensis
Polygonaceae
Asia
Perenial
Seminatural and human-made
50-499
Deliberate
Rhus hirta
Anacardiaceae
N-Am.
Shrub, tree
Seminatural and human-made
15-49
Deliberate
Robinia pseudoacacia
Fabaceae
Eur.
Shrub
Natural, seminatural and human-made
over 500
Deliberate
Rudbeckia laciniata
Asteraceae
N-Am.
Perenial
Natural, seminatural and human-made
over 500
Deliberate
Rumex alpinus
Polygonaceae
Eur., Asia
Perenial
Seminatural and human-made
over 500
Deliberate
Rumex longifolius
Polygonaceae
Eur.
Perenial
Seminatural and human-made
15-49
Accidental

Rumex thyrsiflorus
Polygonaceae
Eur., Asia
Perenial
Natural, seminatural and human-made
over 500
Accidental
Sedum hispanicum
Crassulaceae
Eur., Asia
Perenial
Seminatural and human-made
50-499
Deliberate
Sisymbrium loeselii
Brassicaceae
Eur, Asia, Africa
Annual
Human-made
over 500
Accidental
Solidago canadensis
Asteraceae
N-Am.
Perenial
Natural, seminatural and human-made
over 500
Deliberate
Solidago gigantea
Asteraceae
N-Am.
Perenial
Natural, seminatural and human-made
over 500
Deliberate
Symphoricarpos albus
Caprofoliaceae
N-Am.
Shrub
Natural, seminatural and human-made
over 500
Deliberate
Syringa vulgaris
Oleaceae
Eur.
shrub, tree
Natural, seminatural and human-made
over 500
Deliberate
Tanacetum vulgare
Asteraceae
Eur.
Perenial
Seminatural and human-made
over 500
Accidental
Telekia speciosa
Asteraceae
Eur.
Perenial
Seminatural and human-made
50-499
Deliberate
Tripleurospermum inodorum
Asteraceae
Eur.
Annual
Human-made
over 500
Accidental
Veronica filiformis
Scrophulariaceae
Eur., Asia
Perenial
Seminatural and human-made
50-499
Deliberate
Veronica hederifolia
Scrophulariaceae
Eur, Asia, Africa
Annual
Natural, seminatural and human-made
over 500
Accidental
Veronica persica
Scrophulariaceae
Asia
Annual
Human-made
over 500
Accidental
Viola odorata
Violaceae
Eur, Asia, Africa
Perenial
Natural, seminatural and human-made
over 500
Deliberate
Viola x scabra
Violaceae
Eur., Asia
Perenial
Natural, seminatural and human-made
over 500
Accidental
Virga strigosa
Dipsacaceae
Eur., Asia
Biennial
Human-made
50-499
Deliberate

Other species of the EPPO List of invasive alien plants are recorded in the flora of Czech Republic as casual: Acroptilon repens (Asteraceae), Senecio inaequidens (Asteraceae) and Sicyos angulatus (Cucurbitaceae).

Sources

Pyšek P, Sádlo J, Mandák B (2002) Catalogue of alien plants of the Czech Republic. Preslia, Praha, 74: 97-186.