Achillea pratensis (Asteraceae) - a recently recognized species
of the Czech flora

J 2001

Achillea pratensis (Asteraceae) - a recently recognized species of the Czech flora

DANIHELKA, Jiří and Olga ROTREKLOVÁ

Basic information

Original name

Achillea pratensis (Asteraceae) - a recently recognized species of the Czech flora

Authors

DANIHELKA, Jiří (203 Czech Republic, guarantor) and Olga ROTREKLOVÁ (203 Czech Republic)

Edition

Preslia, Praha, Česká botanická společnost při AV ČR, 2001, 0032-7786

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10600 1.6 Biological sciences

Country of publisher

Czech Republic

Confidentiality degree

není předmětem státního či obchodního tajemství

RIV identification code

RIV/00216224:14310/01:00004305

Organization unit

Faculty of Science

Keywords in English

Achillea pratensis; yarrows; Compositae; karyology; distribution; taxonomy; meadows; Central Europe

Abstract

V originále

Milfoils (Achillea millefolium agg.) of the Czech Republic were studied in the field as well as in most of the Czech herbaria. Achillea pratensis Saukel et Länger, recently described from Austria, was found to be common in the Czech Republic. Its occurrence was confirmed by chromosome counts (2n = 36) in 74 plants from 26 localities, and more than 240 herbarium specimens of this species were revised. Using canonical discriminant analysis, seasonal variation of A. pratensis was analysed. The first generation (spring) and second generation (summer) shoots proved to be morphologically different (they can be separated mainly by number of nodes, plant height, leaf width, and bract length). Thus, the description of the species provided by Saukel et Länger had to be modified to include spring shoots. Morphological and taxonomic delimitations from other tetraploids (A. collina Rchb.) have not yet been satisfactorily defined. Also, taxonomic relationships to A. tenuis Schur described from Transylvania as well as to A. submillefolium Klokov et Krytzka described recently from the Ukraine remain to be clarified. The phytosociological affinity of A. pratensis in the Czech Republic is documented by 18 relevés. The species is confined mainly to mesophilic meadows of the alliance Arrhenatherion W. Koch 1926, to grasslands such as street and garden lawns which can be classified only to the order Arrhenatheretalia Tüxen 1931, as well as to continental flood-plain meadows of the alliance Cnidion venosi Balátová-Tuláčková 1965. Sympatric occurrence of several Achillea taxa of different ploidy levels was observed at several localities and the presence of natural hybrids (A. millefolium x A. pratensis; 2n = 45) was indicated at two sites by chromosome counts.

Links

GA206/98/1545, research and development project

Name: Květena České republiky - 7. svazek

Investor: Czech Science Foundation, Flora of the Czech Republic - vol. 7

MSM 143100010, plan (intention)

Name: Časoprostorová dynamika biodiverzity v ekosystémech střední Evropy.

Investor: Ministry of Education, Youth and Sports of the CR, Spatiotemporal biodiversity dynamics in ecosystems of Central Europe

Citovat

DANIHELKA, Jiří and Olga ROTREKLOVÁ. Achillea pratensis (Asteraceae) - a recently recognized species of the Czech flora. Preslia. Praha: Česká botanická společnost při AV ČR, 2001, vol. 73, No 1, p. 1-27. ISSN 0032-7786.

@article{365954,
   author = {Danihelka, Jiří and Rotreklová, Olga},
   article_location = {Praha},
   article_number = {1},
   keywords = {Achillea pratensis; yarrows; Compositae; karyology; distribution; taxonomy; meadows; Central Europe},
   language = {eng},
   issn = {0032-7786},
   journal = {Preslia},
   title = {Achillea pratensis (Asteraceae) - a recently recognized species of the Czech flora},
   volume = {73},
   year = {2001}
}

TY  - JOUR
ID  - 365954
AU  - Danihelka, Jiří - Rotreklová, Olga
PY  - 2001
TI  - Achillea pratensis (Asteraceae) - a recently recognized species of the Czech flora
JF  - Preslia
VL  - 73
IS  - 1
SP  - 1
EP  - 1
PB  - Česká botanická společnost při AV ČR
SN  - 00327786
KW  - Achillea pratensis
KW  - yarrows
KW  - Compositae
KW  - karyology
KW  - distribution
KW  - taxonomy
KW  - meadows
KW  - Central Europe
N2  - Milfoils (Achillea millefolium agg.) of the Czech Republic were studied in the field as well as in most of the Czech herbaria. Achillea pratensis Saukel et Länger, recently described from Austria, was found to be common in the Czech Republic. Its occurrence was confirmed by chromosome counts (2n = 36) in 74 plants from 26 localities, and more than 240 herbarium specimens of this species were revised. Using canonical discriminant analysis, seasonal variation of A. pratensis was analysed. The first generation (spring) and second generation (summer) shoots proved to be morphologically different (they can be separated mainly by number of nodes, plant height, leaf width, and bract length). Thus, the description of the species provided by Saukel et Länger had to be modified to include spring shoots. Morphological and taxonomic delimitations from other tetraploids (A. collina Rchb.) have not yet been satisfactorily defined. Also, taxonomic relationships to A. tenuis Schur described from Transylvania as well as to A. submillefolium Klokov et Krytzka described recently from the Ukraine remain to be clarified. The phytosociological affinity of A. pratensis in the Czech Republic is documented by 18 relevés. The species is confined mainly to mesophilic meadows of the alliance Arrhenatherion W. Koch 1926, to grasslands such as street and garden lawns which can be classified only to the order Arrhenatheretalia Tüxen 1931, as well as to continental flood-plain meadows of the alliance Cnidion venosi Balátová-Tuláčková 1965. Sympatric occurrence of several Achillea taxa of different ploidy levels was observed at several localities and the presence of natural hybrids (A. millefolium x A. pratensis; 2n = 45) was indicated at two sites by chromosome counts.
ER  -

DANIHELKA, Jiří and Olga ROTREKLOVÁ. Achillea pratensis (Asteraceae) - a recently recognized species of the Czech flora. \textit{Preslia}. Praha: Česká botanická společnost při AV ČR, 2001, vol.~73, No~1, p.~1-27. ISSN~0032-7786.

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