Distributions of vascular plants in the Czech Republic. Part 8
2019
The eighth part of the series on the distributions of vascular
plants in the Czech Republic includes grid maps of 106 taxa in
the genera Abutilon, Achillea. Arctium, Arenaria. Arnoseris,
Carex. Chamaecytisus, Cornus, Diphasiastrum, Echinops.
Galeopsis. Galium, Huperzia, Isoetes. Lyco-podiella.
Lycopodium. Moehringia, Orobanche, Phelipanche, Prunus,
Ranunculus, Selaginella. Stachys, Telekia, Typha and
Zannichellia. These maps were produced by taxonomic experts
based on examined herbarium specimens, literature and field
records. Many of the studied native species are on the national
Red List. They are represented by plants that are rare in the
Czech Republic, in extreme cases confined to single sites
(Arenaria grandiflora. Galium austriacum, Isoetes echinospora,
I. lacustris and Orobanche teucrii). or that have experienced a
considerable decline (e.g. Arnoseris minima. Carex
hordeistichos, C. secalina. Diphasiastrum tristachyum and
Lycopodiella inundata), or a combination of both (e.g.
Orobanche artemisiae-campestris. O. coerulescens, Phelipanche
arenaria. Ph. caesia and Stachys germanica). Three species
(Moehringia muscosa, Selaginella helvetica and Typha minima)
have been extirpated from this country. Alien species are
represented by both archaeophytes (e.g. Arctium lappa, A.
tomentosum, Orobanche minor, Stachys annua and S. arvensis) and
neophytes (e.g. Abutilon theophrasti and Typha laxmannii). Two
species have become invasive: Echinops sphaerocephalus spreads
mainly in dry and disturbed habitats along roads and railways
in warm lowlands, whereas Telekia speciosa is now locally
frequent in various habitats mainly at middle and high
elevations. Echinops bannaticus is reported here as a new alien
species in the Czech Republic that occasionally escapes from
cultivation. Spatial distributions and often also temporal
dynamics of individual taxa are shown in maps and documented by
records included in the Pladias database and available in
electronic appendices. The maps are accompanied by comments
that include additional information on the distribution,
habitats, taxonomy and biology of the taxa.
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