Endive hawkweed

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Endive hawkweed
Endive hawkweed (Schlagintweitia intybacea)

Endive hawkweed ( Schlagintweitia intybacea )

Systematics
Order : Astern-like (Asterales)
Family : Daisy family (Asteraceae)
Subfamily : Cichorioideae
Tribe : Cichorieae
Genre : Schlagintweitia
Type : Endive hawkweed
Scientific name
Schlagintweitia intybacea
( All. ) Griseb.

The endive hawkweed ( Schlagintweitia intybacea (All.) Griseb. , Syn .: Hieracium intybaceum All. ), Also Whitish hawkweed or chicory hawkweed called, is a plant of the genus Schlagintweitia within the family of the daisy family (Asteraceae).

description

Flower heads

Vegetative characteristics

The endive hawkweed grows as a wintering green, perennial herbaceous plant and reaches heights of 5 to 30 centimeters. It contains milky juice and is sticky and strongly scented. The simple or forked stem in the lower third has no simple hairs ( trichomes ).

Basal leaves are missing. The leaves at the base of the stem are often close together and form a false rosette. The 10 to 15 (7 to 20) alternately arranged stem leaves are lanceolate to tongue-shaped, linear in outline, with a narrowed or rounded base, sitting half-encompassing the stem, dentate to lobed, more or less wavy, sticky on both sides with numerous glandular hairs, without and without simple hairs Star hair.

Generative characteristics

The flowering period extends from July to September. On the stem stand individually or in pairs to six in a loose, racemose total inflorescence, cup-shaped partial inflorescences . Under the flower heads there are thin star hairs and abundant long glandular hairs that make these areas sticky. The 14 to 18 mm long bracts are dense with glandular hairs ( trichomes ), without simple hairs or star hairs; the outer bracts are protruding and light green. The bottom of the cup has no chaff leaves , but a honeycomb structure and is often more or less dense and clearly hairy. The flower heads have a diameter of 2.5 to 4 cm when measured with the flowers spread out. The cup-shaped inflorescences contain only yellowish-white ray flowers .

Endive hawkweed in the Vosges

The 3 mm long achenes have a single row, dirty white pappus , the hairs of which become brittle when the tip is pressed.

The number of chromosomes is 2n = 18 or 27.

Occurrence

In Central Europe the endive hawkweed is found sporadically in the Vosges and the Limestone Alps; dispersed in the central and southern Alps , preferably at altitudes between about 1500 and 3000 meters. In the Allgäu Alps , it rises in the Tyrolean part on the Rothornspitze to an altitude of 2200 meters.

The endive hawkweed thrives best on low-lime, humus-rich , stony ground. It colonizes stony , gappy , alpine lawns and mats , rubble, less often rubble, crevices or stony dwarf shrub stands . The species occurs in societies of the Androsacion vandellii association.

Taxonomy

The first publication took place under the name ( Basionym ) Hieracium intybaceum by Carlo Allioni . The new combination to Schlagintweitia intybacea (All.) Griseb. was published by August Heinrich Rudolf Grisebach . Other synonyms for Schlagintweitia intybacea (All.) Griseb. are: Hieracium albidum Vill. , Hieracium tubulosum Lam. The specific epithet intybacea means "waiting-like".

literature

  • Henning Haeupler, Thomas Muer: picture atlas of the fern and flowering plants of Germany . Published by the Federal Agency for Nature Conservation (=  The fern and flowering plants of Germany . Volume 2 ). 2nd corrected and enlarged edition. Eugen Ulmer, Stuttgart (Hohenheim) 2007, ISBN 978-3-8001-4990-2 .
  • Dietmar Aichele, Heinz-Werner Schwegler: The flowering plants of Central Europe . 2nd Edition. tape 4 : Nightshade plants to daisy plants . Franckh-Kosmos, Stuttgart 2000, ISBN 3-440-08048-X .
  • Hieracium intybaceum All., Endive hawkweed. In: FloraWeb.de.

Individual evidence

  1. ^ A b Werner Greuter: Compositae (pro parte majore). Schlagintweitia intybacea Vaill. In: Werner Greuter & Eckhard von Raab-Straube (eds.): Compositae. at Euro + Med Plantbase - the information resource for Euro-Mediterranean plant diversity .
  2. ↑ a b Erich Oberdorfer : Plant-sociological excursion flora for Germany and neighboring areas . With the collaboration of Angelika Schwabe and Theo Müller. 8th, heavily revised and expanded edition. Eugen Ulmer, Stuttgart (Hohenheim) 2001, ISBN 3-8001-3131-5 , pp.  1011 .
  3. ↑ Erhard Dörr, Wolfgang Lippert : Flora of the Allgäu and its surroundings. Volume 2, IHW, Eching 2004, ISBN 3-930167-61-1 , p. 712.

Web links

Commons : Endive hawkweed ( Schlagintweitia intybacea )  - Collection of images, videos and audio files