Wedge reporting

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Wedge reporting
Purslane wedge (Halimione portulacoides)

Purslane wedge ( Halimione portulacoides )

Systematics
Nuclear eudicotyledons
Order : Clove-like (Caryophyllales)
Family : Foxtail family (Amaranthaceae)
Subfamily : Chenopodioideae
Tribe : Atripliceae
Genre : Wedge reporting
Scientific name
Halimione
Aellen
Stalked wedge-shaped head ( Halimione pedunculata )

The Keilmelden ( Halimione ), also called Salzmelden , are a genus of plants in the foxtail family (Amaranthaceae).

description

Vegetative characteristics

The Keilmelden are annual or perennial herbaceous plants . The prostrate, ascending or erect stems and the leaves are silvery-gray. The leaves are opposite, and further up on the stem are arranged alternately. The leaf blades are elongated and entire.

Inflorescences and flowers

The inconspicuous flowers sit in spike-like inflorescences. Wedge-type species are single-sexed ( monoecious ). The male flowers have no bracts ; they contain four to five bloom cladding sheets ( tepals ) and four to five stamens . The female flowers are encased by two upwardly connected, three-lobed bracts. The bracts are absent from the female flowers, they contain only one ovary .

Fruits and seeds

Is characteristic of the genus of halimione that the pericarp tightly adheres to the page forward. The seed stands upright, its root points upwards in the fruit. The seed coat is thin, membranous and transparent and also differs anatomically from the genus Report ( Atriplex ), whose seed coat is hard, thick and brownish.

Chromosome number

The chromosome number is 2n = 18 in Halimione pedunculata and Halimione verrucifera and 2n = 36 in Halimione portulacoides .

Occurrence

The wedge reports are common in Europe, North Africa and Asia. Its area extends in the east from Southwest Asia through Central Asia to the Chinese Xinjiang .

Systematics

The genus Halimione belongs to the tribe Atripliceae in the subfamily Chenopodioideae within the foxtail family (Amaranthaceae). This family now includes the goosefoot family (Chenopodiaceae).

It was discovered as early as 1822 that the three species that today belong to the wedge logs ( Halimione ) differ from the logs ( Atriplex ). In that year Karl Friedrich Wallroth summarized these species in Schedulae Criticae , p. 117 under the name Halimus . However, this genus name was already assigned and thus illegitimate, because Patrick Browne had already established the genus Halimus within the purslane family (Portulacaceae) in 1756 . Therefore Paul Aellen gave this genus the valid name Halimione in 1938 , in negotiations of the Natural Research Society in Basel , 49, p. 121. The type species is Halimione pedunculata (L.) Aellen .

In the following years this species was often reunited with Atriplex . Phylogenetic studies by Kadereit et al. (2010) showed, however, that Halimione does not belong to the genus Atriplex , but rather exists as a genus of its own.

A synonym for Halimione Aellen is Halimus Wallr. (noun illeg.).

The genus comprises three species and is divided into two sections:

  • Halimione Section Halimione : With a species:
  • Halimione section Halimus (SFGray) (name of the section Halimus (SFGray) Sukhor. Under the genus Atriplex ). With two types:
    • Purslane wedge melde ( Halimione portulacoides (L.) Aellen , Syn .: Atriplex portulacoides L. ): It is distributed on the sea coasts of western and southern Europe and the Mediterranean coasts of North Africa to West Asia.
    • Halimione verrucifera (M.Bieb.) Aellen (Syn .: Atriplex verrucifera M.Bieb. ): It occurs from Eastern and Southeastern Europe (Romania, Ukraine) through Southwest and Central Asia to the Chinese Xinjiang. Their habitat is salty wasteland, dune valleys and roadsides.

literature

  • 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 (10), 2010, p. 1682. (Section description, systematics)

Individual evidence

  1. ↑ a b Halimione near Tropicos .
  2. ↑ a b c P. Uotila, 2011: Chenopodiaceae (pro parte majore) . - In: Euro + Med Plantbase - the information resource for Euro-Mediterranean plant diversity . Halimione Aellen. Halimione at PESI portal .
  3. ↑ Entry in Index nominem genericorum
  4. ↑ Gelin Zhu, Sergei L. Mosyakin & Steven E. Clemants: Chenopodiaceae : Atriplex verrucifera , p. 361 - online with the same text as the printed work , In: Wu Zhengyi, Peter H. Raven, Deyuan Hong (eds.): Flora of China , Volume 5: Ulmaceae through Basellaceae. , Science Press and Missouri Botanical Garden Press, Beijing and St. Louis, 2003, ISBN 1-930723-27-X .
  5. ↑ Atriplex verrucifera in GRIN.

Web links

Commons : Keilmelden ( Halimione )  - album with pictures, videos and audio files