Abstracts of volume 75, 2003
Chytrý M. & Rafajová M. (2003): Czech National
Phytosociological Database: basic statistics of the available vegetation-plot
data. – Preslia 75: 1–15.
The vegetation relevés stored electronically in the Czech National Phytosociological Database are reviewed. The database was established in 1996, with the central database located in the Department of Botany, Masaryk University, Brno (www.sci.muni.cz/botany/database.htm). On 15 November 2002 this central database contained 54,310 relevés from the Czech Republic, collected by 332 authors between 1922–2002. Ca. 54% of the relevés were taken from published papers or monographs, 21% from theses and the rest from various unpublished reports and field-books. These relevés include 1,259,008 records of individual plant species. Territorial coverage of the country by the reléves is irregular as the areas with attractive natural or semi-natural vegetation are more intensively sampled, with gaps in coverage of less attractive or poorly accessible areas. Most relevés are of broad-leaved deciduous forests (Querco-Fagetea), meadows (Molinio-Arrhenatheretea), dry grasslands (Festuco-Brometea), and marsh grasslands (Phragmito-Magnocaricetea). The quality of the data is discussed, such as researcher bias, preferential selection of sampling sites, spatial autocorrelation and missing values for some data elements.
Petřík P. (2003): Cyperus eragrostis – a new
alien species for the Czech flora and history of its invasion of Europe. –
Preslia 75: 17–28.
Cyperus eragrostis Lam. was first recorded in the Czech Republic in an empty water reservoir at Jablonec nad Nisou (N Bohemia) in 1999. In this study, herbarium specimens of C. eragrostis in large herbaria in the Czech Republic were revised and the invasion of Europe by this species was reviewed. A brief description of C. eragrostis is given, distribution map of the temporal course of its invasion is presented and the species’ ecology in Europe characterized. Accompanying vegetation and results of the analyses of soil from the site are described. How the plant reached this locality remains unknown. The occurrence was only ephemeral as the only tussock was destroyed when the water reservoir was refilled.
Havlíček P., Fröhner S. E. & Procházka F. (2003):
Critical notes on Alchemilla species in the Bohemian Forest (Šumava
Mts). – Preslia 75: 29–37. [In German]
Three new species of the genus Alchemilla are reported from the Bohemian Forest (Šumava Mts). A. glabricaulis occurs in the Czech Republik and Germany and represents a new species in Central Europe. Both A. baltica and A. cymatophylla occur only in the Czech part of the Bohemian Forest. Overview of taxa so far reported from the region is given.
Hendrych R. (2003): On the occurrence of Ligularia
sibirica in Bohemia. – Preslia 75: 39–69. [In Czech]
Traditionally, only two native localities of Ligularia sibirica have been reported from the Czech Republic. In the present paper, a correction is made as to the founder of the locality between Jestřebí and Staré Splavy near Doksy (50°36'23" N, 14°36'54" E) which was discovered by J. Ch. Neumann in 1814 the latest, i.e. earlier than thought. The species has been retreating from this locality because of changes in environmental conditions, with the decrease of groundwater level after amelioration in 1928 being the most important factor. However, the species is not yet endangered in the locality. The second locality is between Bělá pod Bezdězem and Bakov nad Jizerou (50°29'45" N, 14°54'39" E) and it was not discovered by anybody of those reported up to now but by V. J. Sekera; the discovery was not made in 1854 but as early as in 1843. This locality consists of several populations and its size has increased during the last 100 years. Bohemian localities, which are rather distant from the continuous distribution of the species, originated in the early postglacial period (Praeboreal) and represent remnants of former more extensive distribution in this region. The cultivation of the species and its secondary occurrence are rare and mostly unimportant events.
Lososová Z. (2003): Estimating past distribution of
vanishing weed vegetation in South Moravia. – Preslia 75:
The weed communities have changed dramatically in the 20th century. Because no weed vegetation relevés were recorded for South Moravia early in this century, changes in potential distribution of the most endangered vegetation type, the association Caucalido daucoidis-Conringietum orientalis, are evaluated using records of its diagnostic species. The diagnostic species group of this association was specified by the statistical calculation of fidelity. It includes Scandix pecten-veneris, Caucalis platycarpos, Bupleurum rotundifolium, Thymelaea passerina, Nigella arvensis, and Ajuga chamaepitys. The coincidence distribution maps of these diagnostic species were prepared. The resulting maps show that the potential distribution of Caucalido-Conringietum is the South Moravian region of thermophilous flora and possibly the adjacent regions of mesophilous flora. The incidence of this plant association in the area declined remarkably in the second half of the 20th century, but in the 1990s its diagnostic species appeared again at several sites.
Dvořáková M. (2003): Some information on the taxonomy
and chorology of Minuartia kabylica. – Preslia 75: 81–84. [In
Minuaria kabylica (Pomel) Dvořáková, a species of the section Polymechana Mattf., is defined in terms of taxonomy and chorology. The taxa Minuartia verna subsp. kabylica (Pomel) Maire et Weiller (= Alsine kabylica Pomel) from Northern Africa, and M. grandiflora (C. Presl) Dvořáková from Sicily are taxonomically identical. The distribution of M. kabylica is limited to the Atlas mountain system in Northern Africa and to the mountains of northern Sicily. The seed coat of M. kabylica is documented by an SEM photograph.
Stružková D., Schweingruber F. H. & Steiner Y.
(2003): Pith characteristics distinguishing Vaccinium myrtillus from
Vaccinium vitis-idaea. – Preslia 75: 85–91.
Transverse sections of the stems of Vaccinium myrtillus revealed that the pith is oval, round or drop shaped. In contrast, in V. vitis- idaea it is usually radially angular (triangular, tetragonal etc.). This difference can be used to distinguish the vegetative remains of these plants in peat sediments.
Krahulcová A. (2003): Chromosome numbers in selected
monocotyledons (Czech Republic, Hungary, and Slovakia). – Preslia
The annotated chromosome numbers of 25 species from 6 families of monocotyledons, most of them (14) belonging to Poaceae family, are presented here. The data, except three chromosome counts (Allium oleraceum from Hungary and Calamagrostis villosa from Slovakia), are all based on plants collected in the Czech Republic. The karyological data of 21 species represents new information. While the majority of species presented here originated from one or two localities each, the species Calamagrostis villosa has been studied more extensively: all plants, collected altogether at 13 localities (mountain and lower altitudes), are characterized by an invariable decaploid level (2n = 70). The record of triploid Allium oleraceum is only the second reference to this rare ploidy level in this species. All original karyological data are compared with literature references to particular species, preferentially from Europe.
Danihelka J. (2003): Achillea asplenifolia in
Moravia (Czech Republic), with taxonomic remarks. – Preslia 75:
115–135. [In German]
Achillea asplenifolia Vent. is one of three central European diploid species (together with A. setacea Waldst. et Kit. and A. roseoalba Ehrend.) of the A. millefolium group. Its taxonomic and phytogeographic account from the central European perspective is given mainly on the basis of herbarium and field studies. The synonymy of A. asplenifolia includes A. millefolium var. crustata Rochel and A. scabra Host; both names are typified here. No variation deserving taxonomic recognition was observed. From the taxonomic point of view, A. asplenifolia is a clearly delimited species. It grows in the Czech Republic, Slovakia, Austria, Hungary, Croatia, Serbia, and Romania. From the phytogeographic point of view, it can be classified as a Pannonian geoelement with overlaps to Transylvania and to the marginal parts of the eastern Mediterranean. Within the Czech Republic, its distribution range includes only the warmest and driest part of southern Moravia, with the northernmost site situated near the town of Vyškov. In southern Moravia, A. asplenifolia was confined to extrazonal habitats, mainly to islands of halophilous vegetation such as moist saline meadows (formerly used as pastures) and lowland fens rich in mineral nutrients, but most of the sites were destroyed. Out of six or seven localities preserved up to present, only two host vital populations.
Øllgaard H. (2003): New species of Taraxacum, sect. Ruderalia, found in
Central and Northern Europe. – Preslia 75:
Examples of Taraxacum species (sect. Ruderalia) that have a well-known main distribution area and, a few rather isolated, obviously introduced occurrences, are given. The lack of a long tradition of specific knowledge and collection of Taraxacum sect. Ruderalia specimens have impeded our understanding of the origin of the present distributions. Some views are presented. Taraxacum ancistratum, T. crassum, T. deltoidifrons, T. infuscatum, T. jugiferum, and T. lundense, all belonging to Taraxacum sect. Ruderalia, are described as new species. Three or four of these species were first found as introductions far away from their supposed main distribution area.
Kaplan Z. (2003): Linear-leaved species of
Potamogeton in the Czech Republic V. P. pectinatus. –
Preslia 75: 165–181. [In Czech]
The last part of a revision of linear-leaved species of the genus Potamogeton in the Czech Republic focuses on P. pectinatus. This species is the only member of subgenus Coleogeton occurring in this country. Species description, relevant synonyms, illustrations, a list of specimens examined and a distribution map are provided. P. pectinatus is widespread in the Czech Republic; it is the most common Potamogeton species particularly in runningwaters. P. pectinatus still quite often grows in most lowland rivers and their basins.
Kubát K. & Jehlík V. (2003): Persicaria
pensylvanica in the Czech Republic. – Preslia 75:
183–188. [In German]
Taxonomy, distribution and ecology of Persicaria pensylvanica in the Czech Republic are reviewed. In the Czech Republic, P. pensylvanica is an alien plant which immigrated along the Elbe river. Majority of Czech localities of the species have an ephemeral character but in two localities in the town of Litoměřice, the occurrence is more permanent.
Kučera J. & Váňa J. (2003): Check- and Red List of
bryophytes of the Czech Republic (2003). – Preslia 75:
The second version of the checklist and Red List of bryophytes of the Czech Republic is provided. Generally accepted infraspecific taxa have been incorporated into the checklist for the first time. With respect to the Red List, IUCN criteria version 3.1 has been adopted for evaluation of taxa, and the criteria used for listing in the respective categories are listed under each red-listed taxon. Taxa without recent localities and those where extinction has not been proven are listed as a subset of DD taxa. Little known and rare non-threatened taxa with incomplete knowledge of distribution which are worthy of further investigation are listed on the so-called attention list. In total, 849 species plus 5 subspecies and 19 varieties have been accepted. 23 other historically reported species and one variety were evaluated as doubtful with respect to unproven but possible occurrence in the territory, and 6 other species with proven occurrence require taxonomic clarification. 43 taxa have been excluded from our flora compared to the last checklist version. 48.6 % of evaluated taxa have been listed in either of the Red List categories (EX (RE), CR, EN, VU, LR or DD), which is comparable to other industrialized regions of Central Europe.
Komárek J. (2003): Two Camptylonemopsis species
(cyanoprokaryotes) from “Mata Atlantica” in coastal Brazil. –
Preslia 75: 223–232.
Two new species of the genus Camptylonemopsis (Cyanoprokaryota, Cyanobacteria), namely C. epibryos spec. nova and C. sennae spec. nova, are described from the coastal tropical rainy forest “Mata Atlantica” in Brazil (state Săo Paulo). The diacritical features and the taxonomic position of the genus, particularly the comparison with the related genera Coleodesmium, Tolypothrix and Scytonema are discussed. The tabular review of the genus Camptylonemopsis is presented.
Řepka R. (2003): The Carex muricata aggregate
in the Czech Republic: multivariate analysis of quantitative morphological
characters. – Preslia 75: 233–248.
Morphological variation of Carex muricata from 232 localities in the Czech Republicwas analysed. The plants were preliminarily classified using qualitative characters into six species: C. contigua, C. muricata, C. pairae, C. chabertii, C. divulsa, and C. leersiana. Of 27 quantitative characters, all were used in a principal components analysis and 25 in a discriminant analysis. Both analyses were done using the data for all the species and then separately for the taxonomically complicated species pairs. In the discriminant analysis, the most useful characters for separating particular species were selected; they included the distance between the first and second lowermost spike of the infructescence, infructescence length, glume length in pistillate flower, achene length, length of perigynium beak and spike size. In the classification discriminant analysis, with the six most important characters, 94.4% of plants were correctly classified to the designated groups. The analysis showed that some species pairs (C. muricata – C. pairae, C. chabertii – C. leersiana) are only partially distinguished by quantitative morphological characters. Some other species (C. contigua, C. divulsa), however, are well differentiated and easily identified.
Šída O. (2003): Conyza triloba, new to Europe,
and Conyza bonariensis, new to the Czech Republic. – Preslia,
Praha, 75: 249–254.
Conyza bonariensis (L.) Cronquist and C. triloba Decne. are reported as new alien species to the Czech Republic and Europe, respectively. Conyza bonariensis was collected in 1964 and 1965 in two localities in N Bohemia; the specimens are deposited in PRA. In both cases, the plants were introduced with cotton and occurred in areas of textile factories. Conyza triloba was collected once at the pond in the village of Černivsko in S Bohemia in 1971; the specimen is deposited in PR. The mode of introduction is unknown.
Kučera J., Hradílek Z., Buryová B. & Hájek P.
(2003): Hypnum sauteri and Lescuraea patens, two additions to the
moss flora of the Czech Republic. – Preslia 75: 255–262.
Hypnum sauteri and Lescuraea patens are reported new and Hypnum recurvatum confirmed for the bryoflora of the Czech Republic. The two Hypnum species have been discovered in the valley of Rudný potok brook, Lescuraea patens has so far been recorded at several microsites in the glacial cirques of Mt Kotel, Labský důl valley and Úpská jáma cirque (all localities in the Krkonoše Mts). Full details of the localities are described, the plants are illustrated, and their ecology, distribution and diagnostic characters are briefly discussed.
Mihulka S., Pyšek P. & Pyšek A. (2003):
Oenothera coronifera, a new alien species for the Czech flora, and
Oenothera stricta, recorded again after nearly two centuries.
– Preslia 75: 263–270.
Two species of the North American genus Oenothera are reported as aliens in the Czech Republic. A population of O. coronifera consisting of ca. 30 plants at various phenological stages, from rosettes to flowering plants, was found in 2001 at the railway station in the town of Zliv, district of České Budějovice, S Bohemia. The species was probably introduced via the railway and is the first record of this species for the Czech Republic. A single plant of O. stricta, previously reported from the bank of the Vltava river in Prague, in 1825, was found as a weed in a private garden in the village of Vroutek, district of Louny, N Bohemia, in 2000. This is the second record of this species from the Czech Republic in 175 years. The seed of O. stricta was probably introduced to the site from abroad and the record suggests that the occurrence of casual alien plants is highly unpredictable. It is argued that botanists studying alien plants, given their special interest in sites where these plants occur, may directly contribute to the enrichment of checklists of national alien floras.
Hájková P. & Hájek M. (2003): Species richness and
above-ground biomass of poor and calcareous spring fens in the flysch West
Carpathians, and their relationships to water and soil chemistry. –
Preslia 75: 271–287.
Species richness and above-ground biomass of vascular plants and bryophytes of poor acidic fens (the Sphagno recurvi-Caricion canescentis alliance), rich Sphagnum fens (the Caricion fuscae and Sphagno warnstorfii-Tomenthypnion alliances) and calcareous spring fens (the Caricion davallianae alliance including tufa-forming spring fens) were studied. The study area was in the western parts of the Outer Carpathians in the border region of the Czech and Slovak Republics. The numbers of species were recorded in plots ranging from 0.00196 to 16m2 and correlated with chemical factors and above-ground biomass. The chemical properties of springwater (mainly pH, conductivity, Ca2+, Mg2+) were the main factors influencing the species richness of vascular plants. Tufa-forming calcareous fen communities (Carici flavae-Cratoneuretum) had the highest species richness of vascular plants. In contrast, the highest species richness of bryophytes occurred at pHneutral sites, in peat forming calcareous fen communities (Valeriano-Caricetum flavae) and in those with Sphagnum warnstorfii and S. teres. Bryophyte species richness of small plots was correlated with the iron concentration in the springwater. The differences in species richness of calcareous fens were related to the mowing regime. Litter mass had a negative effect on the species richness of vascular plants. Mosses responded to high amounts of litter or vascular plant biomass by a significant decrease in biomass. Two types of Sphagnum fens: (a) strongly dominated by Sphagnum flexuosum or S. palustre (rich in phosphates) and (b) polydominant (poor in phosphates), were also compared. In the former, the slope of the regression for the dependence of bryophyte species richness on plot size was less steep.
Bureš P., Tichý L., Wang Y.-F. & Bartoš J. (2003):
Occurrence of Polypodium ×mantoniae and new localities for P.
interjectum in the Czech Republic confirmed using flow cytometry. –
Preslia 75: 293–310.
Flow cytometry measurements confirmed the occurrence of Polypodium ×mantoniae (P. interjectum × P. vulgare) at three localities in the eastern part of the Czech Republic (Blansko and Rudice N of Brno and Javoříčko WNW of Olomouc). Nuclear DNA contents (± Sx) were determined for P. vulgare (2C = 29.00 ± 0.32 pg), P. ×mantoniae (2C = 37.18 ± 0.38 pg) and P. interjectum (2C = 45.24 ± 0.31 pg) using a PAS Partec GmbH flow cytometer (PI staining / standard Vicia faba, 2C = 26.9 pg). The relative DNA content ratio was measured in all pairs of taxa (± Sx range), i.e. P. ×mantoniae : P. vulgare = 1.340 ± 0.008; P. interjectum : P. vulgare = 1.681 ± 0.003; P. interjectum : P. ×mantoniae = 1.255 ± 0.008. Six new localities for Polypodium interjectum were found in the region of Moravský Kras (= Moravian Karst, N of Brno). From the PI/DAPI index it can be inferred that the AT/GC ratio (or heterochromatin occurrence) is 1.05× bigger in P. ×mantoniae than in P. vulgare and 1.08× bigger in P. interjectum than in P. vulgare. Anatomical data (number of thick- walled cells in the anulus, spore length and stomata length) of selected specimens and live samples from the Czech Republic were in good agreement with the range of variation of these features published by earlier authors from other European countries. A brief historical survey of the knowledge of P. interjectum in the Czech Republic is included.
Vašut R. J. (2003): Taraxacum sect.
Erythrosperma in Moravia (Czech Republic): Taxonomic notes and the
distribution of previously described species. – Preslia 75:
Dandelions (Taraxacum) of the section Erythrosperma were studied in Moravia, Czech Republic, where both sexual diploid and apomictic polyploid species occur. Diploid species T. erythrospermum grows in the warmest part of southern Moravia and is confined to natural dry grasslands, whereas some apomictic species have ranges extending up to the submontane regions and prefer ruderal habits. Altogether, 21 apomictic types were found repeatedly but only seven were identified as previously described species: T. arcuatum, T. danubium, T. lacistophylloides, T. parnassicum, T. plumbeum, T. proximum and T. scanicum. Descriptions, notes on variation and distribution in Moravia, dot maps and pictures are given for eight species.
Stančík D. (2003):
New endemic taxa of Festuca from the Colombian Sierra Nevada
de Santa Marta. – Preslia 75: 339–347.
A new endemic species, F. sanctae-martae Stančík (sect. Festuca) and a new subspecies, F. amplissima subsp. magdalenaensis Stančík (sect. Ruprechtia), from the Colombian Sierra Nevada de Santa Marta, are described and illustrated.
Dvořáková M. (2003): Minuartia pauciflora, a
Carpathian endemic species of the M. verna group. – Preslia,
Praha, 75: 349–356. [In German]
Populations of the Minuartia verna group (sect. Polymechana Mattf.) from the Západne, Vysoké and Belianske Tatry Mts (W Carpathians) and from the Svidovec and Čorna Hora Mts (Ukrainian E Carpathians) are classified as a separate species Minuartia pauciflora (Kit. ex Kanitz) Dvořáková; the appropriate nomenclatural correction is proposed. Comments on speciation, taxonomic relationships, chromosome counts, distribution and plant sociology are given. A brief morphological comparison with M. rubella (Wahlenb.) Hiern (arctic zone of Holoarctis), M. gerardii (Willd.) Hayek (Alps and Pyrenees) and M. corcontica Dvořáková (Krkonoše Mts, N Czech Republic) is presented.
Hendrych R. (2003): Eduard L. Pospíchal
(1838–1905) in a belated reminder. – Preslia 75:
357–361. [In Czech]
Personal data of the Czech botanist Eduard Ludvík Pospíchal (13. 6. 1838, Litomyšl, eastern Bohemia – 24. 4. 1905, Belluno, N Italy), a secondary school teacher of Latin and Greek, are provided and his importance is assessed. He published floristic reports from Bohemia, Czech Republic. More importantly, he is an author of an extensive flora of the NE Adriatic coast and its surroundings.
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