Halopeplis

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Halopeplis
Halopeplis Amplexicaulis.JPG
Halopeplis amplexicaulis
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Caryophyllales
Family: Amaranthaceae
Subfamily: Salicornioideae
Genus: Halopeplis
Bunge ex Ung.-Sternb.
Species

3 species (see text)

Halopeplis is a genus in the family Amaranthaceae. The plants are halophytes with not articulated stems and fleshy stem-clasping leaves. There are three species, occurring from the Mediterranean basin and North Africa to Southwest Asia and Central Asia.

Contents

Description

The species of Halopeplis are succulent annual ore perennial herbs with glabrous, not jointed plant stems. The alternate or nearly opposite leaves are fleshy, glabrous, globular or ovate, sessile and stem-clasping, with distinct or reduced leaf blades. [1]

The cylindrical spike-like inflorescences are standing laterally or terminally in the upper parts of the plants. In spirally arranged cymes groups of three flowers are sitting in the axils of fleshy bracts. The mostly bisexual flowers are immersed in the inflorescence axis and more or less connate to each other, to the bract, and to the axis. The inconspicuously three-lobed perianth consists of three connate tepals. There are one ore two (rarely three) stamens shortly exserting the flower, and an ovary with two stigmas. [1]

The fruit remains enclosed in the inflorescence axis, the fruit wall (pericarp) is membranous. [1] The seed is ovoid to circular, compressed, with leathery, smooth or papillose seed coat. [2] The seed contains the half-annular, [2] uncinate or curved embryo and copious perisperm (feeding tissue). [1]

Distribution and habitat

The distribution area of Halopeplis covers the Mediterranean region, North Africa, Southwest Asia, Central Asia to China (Xinjiang). [1] [2] [3]

The plants are halophytes and grow on wet salty soils at sea shores, lagoons, or inland at the edge of salt lakes and in saline mudflats. [1]

Systematics

The genus Halopeplis was first published in 1866 by Franz Ungern-Sternberg. [4] In 1857, Alexander Bunge had introduced the name Halopeplis, but without a valid description. The lectotype of the genus is Halopeplis nodulosa, [5] which is a synonym of Halopeplis amplexicaulis. [1]

The genus Halopeplis comprises three species: [2] [6]

Related Research Articles

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<i>Sarcocornia quinqueflora</i> Species of plant

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<i>Halostachys</i> genus of flowering plants

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<i>Kalidium</i> Genus of flowering plants

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<i>Chenopodiastrum</i> Genus of flowering plants

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<i>Heterostachys</i> Genus of flowering plants

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<i>Halocnemum</i> Genus of flowering plants

Halocnemum is a genus of halophytic shrubs in the family Amaranthaceae. The plants are fleshy and apparently articulated with characteristic globular or short-cylindrical lateral branches, and reduced leaves and flowers. There are two species, occurring from Southern Europe and North Africa to Asia.

<i>Microcnemum</i>

Microcnemum is a genus in the plant family Amaranthaceae, containing a single species, Microcnemum coralloides. It is a dwarf annual halophyte with fleshy, apparently jointed stems and reduced leaves and flowers. The two subspecies show a disjunct distribution in Spain and Western Asia.

References

  1. 1 2 3 4 5 6 7 8 9 Hedge, I.C.: Halopeplis. In: Rechinger, K.H. et al. (eds.): Flora Iranica, Vol. 172, Chenopodiaceae, Akad. Druck, Graz 1997, p. 123–125. ISBN   3-201-00728-5.
  2. 1 2 3 4 Zhu, G., Mosyakin, S.L., & Clemants, S.E.: Halopeplis. In: Zhengyi, W., Raven, P.H., & Hong, D. (eds.): Flora of China. Volume 5: Ulmaceae through Basellaceae. Science Press/Missouri Botanical Garden Press, Beijing/St. Louis 2003, ISBN   1-930723-27-X, p. 355.
  3. 1 2 Piirainen, M. 2009: Halopeplis amplexicaulis. In: P. Uotila, (ed.): Chenopodiaceae. In: Euro+Med Plantbase - the information resource for Euro-Mediterranean plant diversity.
  4. Ungern-Sternberg, F.: Versuch einer Systematik der Salicornieen, 1866, p. 102.
  5. "Halopeplis". Tropicos . Missouri Botanical Garden . Retrieved 9 August 2016.
  6. Kadereit, G., Mucina, L. & Freitag, H.: Phylogeny of Salicornioideae (Chenopodiaceae): diversification, biogeography, and evolutionary trends in leaf and flower morphology, In: Taxon, Volume 55 (3), 2006, p. 619.