BUREŠ, Petr. Eleocharis subser. Eleocharis v České republice: komentáře k rozšíření a určovací klíč středoevropských taxonů (Eleocharis subser. Eleocharis in the Czech Republic: comments to geographical distribution and determination key of Central European taxa). Zprávy České botanické společnosti. Praha: Česká botanická společnost, 2002, vol. 37, No 1, p. 3-10. ISSN 0009-0662.
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Basic information
Original name Eleocharis subser. Eleocharis v České republice: komentáře k rozšíření a určovací klíč středoevropských taxonů
Name (in English) Eleocharis subser. Eleocharis in the Czech Republic: comments to geographical distribution and determination key of Central European taxa
Authors BUREŠ, Petr (203 Czech Republic, guarantor, belonging to the institution).
Edition Zprávy České botanické společnosti, Praha, Česká botanická společnost, 2002, 0009-0662.
Other information
Original language Czech
Type of outcome Article in a journal
Field of Study 10600 1.6 Biological sciences
Country of publisher Czech Republic
Confidentiality degree is not subject to a state or trade secret
WWW URL
RIV identification code RIV/00216224:14310/02:00006427
Organization unit Faculty of Science
Keywords in English Determination key; geographical distribution; Eleocharis
Tags determination key, Eleocharis, geographical distribution
Tags International impact, Reviewed
Changed by Changed by: prof. RNDr. Petr Bureš, Ph.D., učo 2635. Changed: 26/3/2019 21:10.
Abstract
Studium variability znaků u studovaných populací potvrdilo ve střední Evropě a také v České republice existenci 6 samostatných taxonomických entit, hodnocených na druhové a poddruhové úrovni: Eleocharis mamillata (H. Lindb.) H. Lindb. subsp. mamillata E. mamillata (H. Lindb.) H. Lindb. subsp. austriaca (Hayek) Strandh. E. palustris (L.) Roem. & Schult. subsp. palustris E. palustris (L.) Roem. & Schult. subsp. vulgaris Walters E. uniglumis (Link) Schult. subsp. uniglumis E. uniglumis (Link) Schult. subsp. sterneri Strandh. U žádného z těchto taxonů nebyly zjištěny podstatné rozdíly mezi morfologickou variabilitou studovaných středoevropských populací a morfometrickými daty, která uvádí Strandhede (1966) pro rostliny skandinávské. Eleocharis uniglumis subsp. sterneri nebyla dosud ani z ČR ani ze střední Evropy uváděna. Bureš (1998) ji uvádí jako high polyploid E. uniglumis z panonské a ilyrské oblasti. Morfometrickým a karyologickým šetřením byla prokázána identita populací ilyrských a panonských oblastí s populacemi ostrova Öland, tedy identita s taxonem, považovaným dosud za endemita ostrovů Öland a Gotland v Baltském moři (cf. e.g. Strandhede & Dahlgren 1968, Walters 1980). Míra podobnosti a existence morfologicky přechodných typů mezi E. mamillata subsp. mamillata a E. mamillata subsp. austriaca svědčí ve prospěch subspecifického pojetí těchto taxonů.
Abstract (in English)
Six taxa were recognized in the Czech Republic: Eleocharis mamillata subsp. mamillata, E. mamillata subsp. austriaca, E. palustris subsp. palustris, E. palustris subsp. vulgaris, Eleocharis uniglumis subsp. uniglumis and E. uniglumis subsp. sterneri. The occurrence of Eleocharis mamillata subsp. mamillata in the Czech Republic is restricted to areas with cold, moist climates with an annual precipitation of more than 650 mm. The distribution of Eleocharis mamillata subsp. austriaca is divided into two parts in the Czech Republic. The first is localized in the Carpathian and Sudeten mountains, continuous with the distribution in the Slovak Carpathians, and the smaller second one is in the Šumava mountains, probably connected to the distribution in the Austrian Alps. Eleocharis palustris subsp. palustris usually occurs in the warmer parts of the Czech Republic with an annual average temperature of more than 7 degrees Celsius and less than 650 mm annual precipitation. Eleocharis palustris subsp. vulgaris occurs much more frequently in the western part of the Czech Republic. This taxon occurs more frequently in areas with a higher concentration of ponds. The distribution of Eleocharis uniglumis subsp. uniglumis is limited by soil conditions. This taxon occurs in calcareous fen or saline habitats. These localities are situated in the lower and warmer parts of the Czech Republic. Eleocharis uniglumis subsp. sterneri had only two localities in the Czech Republic, near Strachotín in Southern Moravia. Both of them were flooded by the lowest Novomlýnská Nádrž Reservoir. The determination key is based on the following characters: stomatal length; achene length; pollen length and fertile glume length (features correlated with chromosome number); culm transparence (on fresh plants); vascular bundle density; basal sterile glume amplexicaulity; width of basal glume margin; number of perigonal bristles; length/width ratio of the stylopodium; stylopodium appearance; stylopodium insertion on the achene and receptacle density in the spike axis.
Links
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
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