Atriplex intracontinentalis
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Atriplex intracontinentalis in Seewinkel in Burgenland |
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| Atriplex intracontinentalis | ||||||||||||
| Sukhor. |
Atriplex intracontinentalis is a species of report ( Atriplex ) in the foxtail family(Amaranthaceae). It was described again in 2007 and is also found in Germany and Austria.
description
According to the Latin first description , Atriplex intracontinentalis has the following characteristics:
Vegetative characteristics
Atriplex intracontinentalis grows as an annual herbaceous plant with an upright stalk that can reach heights of up to 1 meter. The delicate leaves, green on both sides, are lanceolate or linear, with entire margins or toothed.
Inflorescence and flowers
The flowering period extends from July to August. The intracontinental message is single sexed ( monoecious ) with mixed inflorescences. The clusters of flowers stand apart, the upper ones are sometimes approximated. The male flowers have a four- or five-part flower envelope . The female flowers are two herbaceous, not hardened continue reading wrapped. With a length of up to 5 mm, these are rhombic without an extended tip. They are usually toothed on the edge, with three to six teeth on each side. They often have protruding appendages on their backs.
Fruits and seeds
The fruiting season extends from August to September. There are two types of seeds ( heterocarpy ): dark red-black, flat seeds with a diameter of 1.1 to 1.4 mm and light brown seeds with a diameter of 1.5 to 1.7 mm, concave in the center.
Distinguishing features
Atriplex intracontinentalis differs from the beach melde ( Atriplex littoralis ) by the rhombic, smaller and at the tip not elongated prophylls. In addition, their seeds are light brown, not reddish brown.
Chromosome number
The number of chromosomes is 2n = 18.
Photosynthetic pathway
Atriplex intracontinentalis is a C 3 plant with normal leaf anatomy .
Occurrence
Atriplex intracontinentalis is distributed from Central Europe over the northwestern part of Central Asia to the northwestern People's Republic of China (Inner Mongolia). It is also said to occur in Egypt . The distribution area in Europe includes Germany , Austria , the Czech Republic , Slovakia , Moldova , Romania , Ukraine and Russia . The inland occurrences of Atriplex littoralis , which are given in the Atlas Florae Europaeae for large parts of Hungary and northern Serbia , probably also belong to Atriplex intracontinentalis .
The habitat of Atriplex intracontinentalis is alluvial deposits on water banks. It is only found scattered on salty soils , which is why Sukhorukov regards it as less halophilic than the beach melde .
Systematics
Atriplex intracontinentalis Sukhor. belongs within the genus Atriplex to the section Teutliopsis Dumort.
The first description of Atriplex intracontinentalis was made in 2007 by Alexander Sukhorukov in the annals of the Natural History Museum in Vienna , Series B 108, p 349 (see literature). Previously, these intracontinental plants were often mistakenly identified as Atriplex littoralis and even Atriplex laevis . Since they differ significantly from the coastal populations, Sukhorukov set up the new species.
literature
- Alexander P. Suchorukow: On the systematics and chorology of the Atriplex species (Chenopodiaceae) occurring in Russia and the neighboring states (within the borders of the former USSR). In: Annals of the Natural History Museum in Vienna. Series B, 108, 2007, pp. 349-351. (PDF file; 31.37 MB) (sections description, chromosome number, taxonomy, overall distribution)
Individual evidence
- ↑ a b Gudrun Kadereit, Evgeny V. Mavrodiev, Elizabeth H. Zacharias, Alexander P. Sukhorukov: Molecular phylogeny of Atripliceae (Chenopodioideae, Chenopodiaceae): Implications for systematics, biogeography, flower and fruit evolution, and the origin of C4 Photosynthesis. In: American Journal of Botany. Volume 97, No. 10, 2010, pp. 1664-1687.
- ↑ P. Uotila: Chenopodiaceae (pro parte majore). In: Euro + Med Plantbase - the information resource for Euro-Mediterranean plant diversity. Atriplex intracontinentalis. 2011. Entry on PESI portal .
- ↑ J. Jalas, J. Suominen (ed.): Atlas Florae Europaeae: distribution of vascular plants in Europe. 5: Chenopodiaceae to Basellaceae. Akateeminen Kirjakaupa, Helsinki 1980, ISBN 951-9108-04-1 .
