Heath Speedwell

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Heath Speedwell
Heath speedwell (Veronica dillenii)

Heath speedwell ( Veronica dillenii )

Systematics
Euasterids I
Order : Mint family (Lamiales)
Family : Plantain family (Plantaginaceae)
Tribe : Veroniceae
Genre : Speedwell ( Veronica )
Type : Heath Speedwell
Scientific name
Veronica dillenii
Crantz

The heather speedwell ( Veronica dillenii ), also known as Dillenius speedwell , is a species of plant in the plantain family (Plantaginaceae).

description

Vegetative characteristics

The Heath Speedwell grows as an annual herbaceous plant . It is closely related to the spring speedwell ( Veronica verna ) and differs from it, among other things, in the dark blue color of the flowers and the overall stronger shape. The stem , which is often reddish overflowing, with round peduncles , reaches heights of between 5 and 30 centimeters. It grows upright and is simple or branchy. In the upper part it is hairy glandular-shaggy. When dry, the whole plant turns black.

The almost bare, glandular ciliate leaves that are only slightly hairy on the edge are somewhat fleshy and dull green in color. The lowest leaves are short-stalked, egg-shaped and serrated. The remaining leaves sit directly on the stem and have linear, elongated sections that are again incised in a feathery manner.

Generative characteristics

The heather speedwell blooms mainly in April and May. The flowers sit in low-reaching racemose inflorescences . The peduncle is shorter than the calyx . The hermaphroditic flowers have a double flower envelope . The corolla has a diameter of about 5 millimeters and is deeply azure blue.

The fruit stalks have a length of about 1 to 2.5 millimeters. The flattened, glandular hairy, round kidney-shaped capsule fruit is shallow. The stylus has a length of about 1 to 1.5 millimeters and projects beyond the Ausrandung the fruit significantly. The compartments of the capsule fruit usually contain 9 to 13 seeds about 1.5 millimeters in size.

The number of chromosomes is 2n = 16.

Occurrence and endangerment

The Heide-Ehrenpreis occurs from Central Eastern to Southeastern Europe and from Southern Europe via Central Europe to Sweden. It is also found in Western Asia, Central Asia, the Caucasus and Siberia. It is a temperate continental flora element . It is rare in Central Europe. In Germany, the Heide-Ehrenpreis occurs more often only in eastern Germany. In addition, it is very rare. It was classified as endangered in the 1996 Red List of Endangered Plant Species . In Austria it occurs very rarely in the eastern federal states and for the most part is endangered. In Switzerland it is very rare in Valais and Graubünden .

Veronica dillenii grows on dry grass , in sandy heather , in pine forests and on fields. It thrives best on dry, lime-free, shallow, weathered stone soils . In Central Europe it is a character type of the Sedo-Veronicion association.

Taxonomy

The first publication of Veronica dillenii was by Crantz . The specific epithet dillenii honors the German botanist Johann Jacob Dillen (1687–1747).

photos

  • Habitus

  • Habitus

  • The middle and upper leaves are pinnate to pinnate.

  • Fruit cluster

  • The fruits are hairy short and downy on the outside, the stylus protrudes far beyond the capsule bay.

swell

literature

  • Konrad von Weihe (ed.): Illustrated flora. Germany and neighboring areas. Vascular cryptogams and flowering plants . Founded by August Garcke. 23rd edition. Paul Parey, Berlin / Hamburg 1972, ISBN 3-489-68034-0 .
  • Wolfgang Adler, Karl Oswald, Raimund Fischer: Excursion flora of Austria . Ed .: Manfred A. Fischer. Eugen Ulmer, Stuttgart / Vienna 1994, ISBN 3-8001-3461-6 .
  • Christian Heitz: School and excursion flora for Switzerland. Taking into account the border areas. Identification book for wild growing vascular plants . Founded by August Binz. 18th completely revised and expanded edition. Schwabe & Co., Basel 1986, ISBN 3-7965-0832-4 .
  • Erich Oberdorfer : Plant-sociological excursion flora . With the collaboration of Theo Müller. 6th, revised and expanded edition. Eugen Ulmer, Stuttgart (Hohenheim) 1990, ISBN 3-8001-3454-3 .

Individual evidence

  1. ↑ a b Veronica dillenii Crantz, Dillenius-Ehrenpreis. In: FloraWeb.de.
  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.  840 .
  3. ^ A b Veronica in the Germplasm Resources Information Network (GRIN), USDA , ARS , National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland. Retrieved December 18, 2017.
  4. ^ A b Manfred A. Fischer, Karl Oswald, Wolfgang Adler: Excursion flora for Austria, Liechtenstein and South Tyrol . 3rd, improved edition. State of Upper Austria, Biology Center of the Upper Austrian State Museums, Linz 2008, ISBN 978-3-85474-187-9 .

Web links

Commons : Heide-Ehrenpreis ( Veronica dillenii )  - Album with pictures, videos and audio files