Reddish water speedwell

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Reddish water speedwell
VeronicaCatenata.jpg

Reddish water speedwell ( Veronica catenata )

Systematics
Euasterids I
Order : Mint family (Lamiales)
Family : Plantain family (Plantaginaceae)
Tribe : Veroniceae
Genre : Speedwell ( Veronica )
Type : Reddish water speedwell
Scientific name
Veronica catenata
Pennell

The reddish water speedwell ( Veronica catenata ), also Pale Gauchheil speedwell called, is a plant from the genus speedwell ( Veronica ) within the family of plantain plants (Plantaginaceae). It is widespread in the northern hemisphere in almost all of Europe and North America.

description

The leaves are broadly linear, at least four times as long as they are wide and always seated.
The crown is white to pale purple pink.
The inflorescence is usually somewhat hairy glandular.
The fruit stalk is usually shorter than its wrapper.
The fruits are round and slightly wider than they are long.
Seeds

Vegetative characteristics

The reddish water speedwell grows as an annual herbaceous plant that reaches heights of 10 to 50, rarely up to 60 centimeters. The bare, upright stem is square in the upper area, mostly pithy and often overflowing with purple-brown.

The leaves are sessile and semicircular. Leaf blades are at a length of 3 to 5, rarely up to 9 centimeters and a width of about 1 centimeter, broadest below the middle and lanceolate with tapering upper ends. If they get under water, they begin to grow in length and they can reach a total length of up to 12 centimeters and a width of up to 2 centimeters. The leaf margin is notched to almost full.

Generative characteristics

The lateral, grape-shaped inflorescence is 6 to 12 inches long and contains 15 to 25 flowers. The bracts are approximately lanceolate with a length of 4 to 5 millimeters. The glandular to bald pedicel is 3 to 5 millimeters long. The hermaphrodite flowers are 2 to 5 millimeters in diameter and have a double flower envelope . The glandular sepals are elongated to lanceolate-ovate with a length of 3 to 3.5 millimeters. The four pale blue, pale pink to whitish, violet veined petals are colored. The stylus is 1.2 to, usually 1.5 to 2 millimeters long.

The fruit stalks are more or less horizontal. The capsule fruit is about 3 millimeters long and about 3.5 millimeters in diameter, broad-spherical or oval-shaped. The long-lasting sepals are usually shorter than the fruit. The yellow-brown seeds are about 0.5 millimeters long.

The number of chromosomes is 2n = 36.

ecology

The reddish water speedwell is a therophyte . It's a swamp plant . The pollination is done by insects or self-pollination . The diaspores spread by wind, water, ants or self-spread.

Occurrence

The wide distribution area of ​​the Reddish Water Speedwell includes almost all of Europe and North America in the northern hemisphere . It is considered uncertain whether there are also deposits in the Azores , in Moldova and in Ukraine . Furthermore, it is not certain whether the North American occurrences are of natural origin or whether the species was introduced there.

The reddish water speedwell grows along slow flowing rivers and on plains, at least in North America. In Central Europe it occurs in companies of the Bidention tripartitae association.

Systematics

It was first described as Veronica catenata in 1921 by Francis Whittier Pennell in Rhodora , Volume 23, No. 266, p. 37. Synonyms for Veronica catenata Pennell are: Veronica aquatica Bernh. nom. illegal. non Gray , Veronica comosa K. Richt. , Veronica anagallis-aquatica subsp. aquatica (Bernh.) Nyman.

There are no accepted subtaxas of Veronica catenata .

Individual evidence

  1. ↑ a b c d e f g h i j k l m n Veronica catenata Pennell, Roter Wasser-Ehrenpreis. In: FloraWeb.de.
  2. ↑ Profile and distribution map for Bavaria . In: Botanical Information Hub of Bavaria .
  3. ↑ a b c d e f g h i j k l Francis W. Pennell: Rhodora. Journal of The New England Botanical Club . Ed .: New England Botanical Club. tape 23 , no. 265 , January 1921, Veronica catenata , p. 37 (English, [1] - this printed work is scanned online).
  4. ↑ 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.  845 .
  5. ↑ Veronica catenata in the Germplasm Resources Information Network (GRIN), USDA , ARS , National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland. Retrieved June 18, 2012.
  6. ↑ Veronica catenata at Tropicos.org. Missouri Botanical Garden, St. Louis, accessed June 18, 2012.
  7. ↑ Karol Marhold: Scrophulariaceae. 2011: Datasheet Veronica catenata In: Euro + Med Plantbase - the information resource for Euro-Mediterranean plant diversity. .

Web links

Commons : Veronica catenata  - collection of images, videos and audio files