Yellow thimble

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Yellow thimble
Yellow foxglove (Digitalis lutea)

Yellow foxglove ( Digitalis lutea )

Systematics
Asterids
Euasterids I
Order : Mint family (Lamiales)
Family : Plantain family (Plantaginaceae)
Genre : Thimbles ( digitalis )
Type : Yellow thimble
Scientific name
Digitalis lutea
L.

The yellow foxglove ( Digitalis lutea ) is a species of plant from the plantain family (Plantaginaceae).

description

Digitalis lutea L. subsp. lutea in the herb garden open-air museum Roscheider Hof

The yellow foxglove is a biennial to perennial herbaceous plant and reaches heights of between 30 and 80 centimeters. The upright, unbranched stem is weakly runny and glabrous, the alternately arranged, narrow to ovate-lanceolate leaves are simple, finely ciliate on the edge, otherwise glabrous and irregularly serrate. A down-to-earth rosette at flowering time, as with other thimbles, is missing.

The inflorescence is a one-sided cluster of many, densely packed, sulfur-yellow, narrow-tube, patternless flowers that are 9 to 25 mm long and hairy on the inside. The flowers are smaller and narrower than those of the large-flowered foxglove , whose flowers are 28 to 40 mm long, ocher yellow and marked on the inside. The crown is made up of five fused petals . There are four stamens, the ovary is above and the fruit is a capsule . The leaves are missing the stipules .

The number of chromosomes is n = 56.

distribution

The plant is distributed from western Europe to southern Italy and north-west Africa. It grows preferentially on dry, calcareous, stony and warm soils in bright locations such as clearings or the edges of forest paths. It is Kennart the Association Atropo-Digitalietum luteae Oberd. 1957 (n.inv.) And is considered safe, but is "specially protected" in Germany by the Federal Species Protection Ordinance.

Systematics

One can distinguish the following subspecies:

  • Digitalis lutea L. subsp. lutea : It occurs in Spain, France, Germany, Austria, Italy, Switzerland, the Netherlands, Belgium and the Czech Republic.
  • Digitalis lutea subsp. atlantica  : It occurs in Morocco.
  • Digitalis lutea subsp. australis (Ten.) Arcang. : It occurs in Italy and Corsica.
  • Digitalis lutea subsp. cedretorum Emb .: It occurs in Morocco.
  • Digitalis lutea subsp. transiens (Maire) Emb. & Maire : It occurs in Morocco.

Toxicity

The plant is very poisonous. The main active ingredients are cardenolides with a relatively low total content:

The poisonous effect corresponds to that of Digitalis purpurea . The effectiveness of the heart also corresponds to that of Digitalis purpurea ; the effectiveness as a diuretic , however, should be stronger.

literature

  • Erich Götz: Identify plants with the computer. Flora of Germany . CD-ROM. Eugen Ulmer, Stuttgart (Hohenheim) 2001, ISBN 3-8252-8168-X .
  • Hans Simon (Ed.): The free-range ornamental shrubs. Manual and lexicon of garden perennials . Founded by Leo Jelitto, Wilhelm Schacht. 5th completely revised edition. tape 1 : A-H . Eugen Ulmer, Stuttgart (Hohenheim) 2002, ISBN 3-8001-3265-6 , pp. 294 .
  • Lutz Roth, Max Daunderer, Karl Kormann: Poisonous plants plant poisons. 6th revised edition. Nikol-Verlag, Hamburg 2012, ISBN 978-3-86820-009-6 .

Individual evidence

  1. a b c d e f Karol Marhold, 2011: Scrophulariaceae : Data sheet Digitalis lutea In: Euro + Med Plantbase - the information resource for Euro-Mediterranean plant diversity.

Web links

Commons : Yellow Foxglove ( Digitalis lutea )  - album with pictures, videos and audio files