Small milkweed

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Small milkweed
Small Spurge (Euphorbia exigua)

Small Spurge ( Euphorbia exigua )

Systematics
Rosids
Eurosiden I
Order : Malpighiales (Malpighiales)
Family : Spurge Family (Euphorbiaceae)
Genre : Spurge ( Euphorbia )
Type : Small milkweed
Scientific name
Euphorbia exigua
L.

The spurge ( Euphorbia exigua ) is a species of the genus spurge ( Euphorbia ) in the family of the spurge plants (Euphorbiaceae).

description

Illustration from storm

Vegetative characteristics

The small milkweed is an annual herbaceous plant that reaches a stature height of 5 to 20 cm. The sitting leaves are linear, pointed and blue-green with a width of 1 to 4 millimeters.

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Generative characteristics

The bracts have a broad heart-shaped base, they are significantly longer than wide. The crown is light green. The capsule fruits are smooth and not winged. The seeds are irregularly warty-wrinkled.

The number of chromosomes is 2n = 16, 24, 28 or 56.

Habitus

Occurrence

Euphorbia exigua is widespread in Europe, in Macaronesia , in the Mediterranean with North Africa to Iran . It grows in fields, in gardens and in ruderal areas . It thrives best on fresh to moderately dry, base and nutrient-rich, even stony loam and clay soils . It is a character species of the Caucalidion association in Central Europe , but also occurs in associations of the Aperion or Fumario-Euphorbion associations. In southern Europe it occurs mainly in societies of the Thero-Brachypodietea class.

The small milkweed is an archaeophyte in Central Europe and a wild herb widespread in limestone areas, characterized by additional root shoots; currently Euphorbia exigua is in decline.

ecology

It is rooted up to 50 centimeters deep.

Systematics

Euphorbia exigua was first published by Carl von Linné -

The following subspecies can be distinguished:

  • Euphorbia exigua L. subsp. exigua (Syn .: Euphorbia exigua var. acuta L. , Euphorbia exigua var. retusa L. , Euphorbia retusa (L.) Forssk. nom. illeg., Euphorbia exigua subsp. acuta (L.) Ehrh. , Euphorbia diffusa Jacq. , Euphorbia tricuspidata Lapeyr. , Euphorbia exigua var. tricuspidata (Lapeyr.) WDJKoch , Euphorbia exigua var. truncata W.DJKoch , Euphorbia melillensis dairymen & Mauricio nom. NUD., Euphorbia exigua var. melillensis dairymen , Euphorbia exigua var. pycnophylla KUKramer & Westra , Euphorbia pycnophylla (KUKramer & Westra) C. Brullo & Brullo nom. Illeg.)
  • Euphorbia exigua subsp. merinoi M.Laínz : It occurs from Morocco through Spain and Portugal to western France .

literature

  • Siegmund Seybold : Flora of Germany and neighboring countries. A book for identifying vascular plants that grow wild and often cultivated . Founded by Otto Schmeil , Jost Fitschen . 93rd completely revised and expanded edition. Quelle & Meyer, Wiebelsheim 2006, ISBN 3-494-01413-2 .
  • Hans-Joachim Zündorf, Karl-Friedrich Günther, Heiko Korsch, Werner Westhus (eds.): Flora of Thuringia. The wild fern and flowering plants of Thuringia . Weissdorn, Jena 2006, ISBN 3-936055-09-2 .

Individual evidence

  1. ↑ a b c d Erich Oberdorfer : Plant-sociological excursion flora for Germany and neighboring areas. 8th edition. Verlag Eugen Ulmer, Stuttgart 2001, ISBN 3-8001-3131-5 . Page 640.
  2. ↑ a b c d Rafaël Govaerts (Ed.): Euphorbia exigua. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved December 3, 2015.
  3. ↑ Ruprecht Düll , Herfried Kutzelnigg : Pocket dictionary of the plants of Germany and neighboring countries. The most common Central European species in portrait . 7th, corrected and enlarged edition. Quelle & Meyer, Wiebelsheim 2011, ISBN 978-3-494-01424-1 .

Web links

Commons : Small Spurge ( Euphorbia exigua )  - Album with pictures, videos and audio files