Leontodon

Rough Dandelion ( Leontodon hispidus )

Dandelion ( leontodon ), even milkweed or dandelion stem called, is a genus of flowering plants in the sunflower family ( Asteraceae). He should not be confused with the ordinary dandelion another genus belonging.

Description

Leontodon species are annual to perennial herbaceous plants reach heights of growth from 10 to 80 cm depending on the type. The simple or branched stems are hairy or smooth. The winged petiolate leaves are borne in basal rosettes. The leaf blade is simple to pinnately lobed. The leaf margin is smooth, toothed or lobed. The leaves are smooth or hairy.

The bloom conditions are individually or to two to five. The 16 to 20 bracts are in at least two rows; they are smooth or hairy. The convex inflorescence base has no chaff leaves. The flower heads have a diameter of 4 to 15 mm and contain only 20 to 30 florets. The ray florets are yellow to orange, the outer sometimes with reddish or greenish stripes.

The light to dark or reddish- brown achene has ten to 14 ribs. In contrast to the well-known, also called genre " dandelion " Taraxacum the achenes are beaked, that is, the pappus is not sitting on a stalk. The yellowish- white to light brown bristles of the pappus are also available with little hairs busy ( pinnate ); they are in one or two rows. The bristles of the outer ring can be reduced to bristle shed.

System

For leontodon L. there are the synonyms: Apargia, Microderis.

There are about 50 leontodon species ( selection):

  • Autumn Dandelion ( Leontodon autumnalis L.)
  • Leontodon boryi DC.
  • Leontodon carpetanus Long
  • Leontodon cichoriaceus ( Ten. ) Sanguin.
  • Krauser Dandelion ( leontodon crispus Vill. )
  • Leontodon croceus Haenke
  • Leontodon duboisii Sennen
  • Leontodon filii Paiva & Ormonde
  • Leontodon hellenicus Phitos
  • Swiss Dandelion ( leontodon helveticus Mérat, Syn. Leontodon pyrenaicus subsp helveticus ( Mérat ) Finch & PDSell )
  • Leontodon hirtus L.
  • Leontodon hispidulus ( Delile ) Boiss.
  • Stiff Hairy dandelion or dandelion Rauer ( Leontodon hispidus L., Syn: leontodon hastilis L.): Bald-Headed Dog wire Dandelion ( Leontodon hispidus subsp danubialis ( Jacq. ) Simonk, Syn: .. Leontodon danubialis Jacq, leontodon hastilis L., leontodon schischkinii UN Vassil, leontodon hastilis glabratus var WDJKoch, Leontodon hispidus subsp hastilis (. .. L.) Corb. )
  • Doubtful wire haired Dandelion ( Leontodon hispidus subsp dubius ( Hoppe) Pawl, Syn: .. .. Leontodon alpinus Jacq, Leontodon hispidus var dubius ( Hoppe) Hegi, Leontodon hispidus subsp alpinus ( Jacq. ) Finch & PDSell )
  • Ordinary wire haired Dandelion ( Leontodon hispidus L. subsp. Hispidus )
  • Smooth wire haired dandelion or flat leaf dandelion ( Leontodon hispidus subsp hyoseroides ( Rchb. ) Murr, Syn. Leontodon hyoseroides Rchb. )
  • Handsome Dog wire Dandelion ( Leontodon hispidus subsp. Opimus ( WDJ Koch) Finch & PDSell )
  • Leontodon saxatilis subsp. rothii Maire (syn.: leontodon taraxacoides ( Villars ) Mérat subsp longirostris Finch & PDSell. )
  • Leontodon saxatilis Lam. subsp. saxatilis ( Syn: leontodon nudicaulis J.Banks, nom illeg, L. subsp nudicaulis taraxacoides ( Villars ) Schinz & Thellung, L. leysseri ( Wallroth ) G.Beck. .. )

Etymology

After Etymological Dictionary of Kluge 1533 Rösslin name researcher has the leontodon set up as Dandelion ( 1546 " the Bletter half with pointy tens "). In the French territory of which he is mentioned since 1400 as a dent de lion ( lion's tooth).

Swell

  • David J. Bogler: leontodon. In: Flora of North America Editorial Committee ( eds.): Flora of North America North of Mexico. Volume 19: Magnoliophyta: unranked, part 6: Asteraceae, part 1 ( Mutisieae - Anthemideae ), Oxford University Press, New York / Oxford et al 2006, ISBN 0-19-530563-9, p 294, online ( engl. ).
Asterids Cichorioideae Pappus (flower structure)
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