Klasea cretica

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Klasea cretica
Systematics
Order : Astern-like (Asterales)
Family : Daisy family (Asteraceae)
Subfamily : Carduoideae
Tribe : Cynareae
Genre : Klasea
Type : Klasea cretica
Scientific name
Klasea cretica
( Turrill ) Holub

Klasea cretica is a species of the genus Klasea from the sunflower family (Asteraceae). It only occurs in Crete.

description

Vegetative characteristics

Klasea cretica is a perennial stem hemicryptophyte that reaches heights of 20 to 70 centimeters. The stem is winged. The leaves are lanceolate to elliptical and dentate at the edge with spiky teeth .; the leaf base is long running down. The numerous stem leaves decrease in size from the base of the stem to the tip. They have a barely protruding vein of the same color and are long running down at the base. toothed at the edge with spiky teeth.

Generative characteristics

The baskets have long stems, 30 to 40 millimeters in size, and are arranged individually or in small numbers. The outer bracts are 4 to 5 millimeters wide, shiny, mealy-short and hairy on the back and only have a few eyelashes on the edge. They have strong, abruptly contracted, pointed, 2 to 3 millimeter long thorns, which are usually strongly bent back at the time of fruit. The inner bracts are more or less rigid. The flowers are purple in color.

The flowering period extends from June to July.

Occurrence

Klasea cretica only occurs in eastern Crete . Plants from Greece (Peloponnese) and Libya, which were temporarily moved here, belong to the species Klasea moreana rewritten by Werner Greuter in 2012 . Klasea cretica grows on rocks, in pine forests and in Phrygana at altitudes of 200 to 600 meters.

Systematics

Klasea cretica was placed in the genus monograph by Ludwig Martins within Klasea as the only purple-flowered species in the Schumeria ( Iljin ) L.Martins section, which is otherwise characterized by yellow flowers , while the relationship of Klasea flavescens was classified as belonging to the Demetria section .

This species was named Serratula cichoracea subsp. In 1958 by the British botanist William Bertram Turrill . cretica first described . It was placed in the genus Klasea in 1977 by the Czech botanist Josef Holub and raised to the rank of species. This classification was only recognized in 2006 through the work of Ludwig Martins. Another synonym is Klasea flavescens subsp. cretica ( Turrill ) Greuter & Wagenitz . The generic name honors the Swedish doctor Lars Magnus Klase (1722–1766).

literature

  • Ralf Jahn, Peter Schönfelder: Excursion flora for Crete . With contributions by Alfred Mayer and Martin Scheuerer. Eugen Ulmer, Stuttgart (Hohenheim) 1995, ISBN 3-8001-3478-0 , p. 326 .

Individual evidence

  1. a b c d e f g h i j k Werner Greuter: Results of the Seventh “Iter Mediterraneum” in the Peloponnese, Greece, May to June 1995 (Occasional Papers from the Herbarium Greuter - N ° 1). In: Bocconea. Volume 25, pp. 109-111, PDF file .
  2. Panayiotis Dimopoulos, Thomas Raus, Erwin Bergmeier, Theophanis Constantinidis, Gregoris Iatrou, Stella Kokkini, Arne Strid, Dimitrios Tzanoudakis: Vascular Plants of Greece: An Annotated Checklist. (= Englera. Volume 31). Botanical Garden and Botanical Museum Berlin-Dahlem / Hellenic Botanical Society, Berlin / Athens 2013, ISBN 978-3-921800-88-1 , p. 62.
  3. a b Werner Greuter (2006+): Compositae (pro parte majore). - In: W. Greuter & E. von Raab-Straube (eds.): Compositae. Euro + Med Plantbase - the information resource for Euro-Mediterranean plant diversity. Datasheet Klasea In: Euro + Med Plantbase - the information resource for Euro-Mediterranean plant diversity.
  4. Ludwig Martins: Biosystematics and taxonomy of Klasea (Asteraceae-Cardueae) and a synopsis of the genus. In: Botanical Journal of the Linnean Society. Volume 152, No. 4, pp. 435-464. DOI: 10.1111 / j.1095-8339.2006.00583.x
  5. Lotte Burkhardt: Directory of eponymous plant names . Extended Edition. Botanic Garden and Botanical Museum Berlin, Free University Berlin Berlin 2018. [1]