Sarcobatus

Sarcobatus vermiculatus

Sarcobatus is the only genus of the family of Sarcobataceae in the order of the clove -like ( Caryophyllales ) within the angiosperms. The areas of the two species are only in the south-western North America, including the north-western Mexico. There are halophytes in arid areas. In some areas they are invasive plants.

Description

Vegetative characteristics

Sarcobatus species grow deciduous, upright, richly branched shrubs. The plant parts can be hairy fluffy. The branches are one with mostly, rarely reinforced two spines each wound dry. The sessile leaves are usually alternate in long shoots or standing close together on short shoots; they are fleshy, succulent with a smooth margin. The leaves are green in contrast to the other species in the same habitat, all of which have gray leaves. Stipules are not available.

Generative features

They are mostly monoecious getrenntgeschlechtig ( monoecious ), rarely dioecious getrenntgeschlechtig ( dioecious ). There are no support or cover sheets available. Ten to 40 male flowers are arranged in a cylindrical, kitten -like inflorescence. The male flowers lack bracts; they usually have only two to four (rarely one or five) free stamens. The female flowers are solitary or in pairs in the leaf axils; they have (two) bell-shaped fused bracts. Two carpels are fused to a partially permanent, einfächerigen ovary. In the ovary is in basal placentation only one ovule available. It is a pen available with two papillary scarring.

The enveloped by the fleshy bloom cladding achene is winged. The circular, flattened seed has a membranous, translucent aril. The distribution of diaspores carried by the wind.

The base chromosome number is n = 9

System

The type species was in 1838 as Batis vermiculatus by William Jackson Hooker in Flora Boreali - Americana, 2 ( 9 ), pp. 128 firstdescribed. The first publication of the genus name Sarcobatus took place in 1839 by Christian Gottfried Daniel Nees von Esenbeck in journey into the interior of North America in the years 1832 through 1834, 1, pp. 510 was the renaming of the time the only way in Sarcobatus vermiculatus 1848 by John Torrey in Notes of a Military reconnoissance, p 149 The genus Sarcobatus was monotypic until 1892 Frederick Vernon Coville, a second type from western Nevada published. A synonym for Sarcobatus Nees is Fremontia Torr. Previously, this genus was placed in the tribe Sarcobateae within the subfamily Salsoloideae the family of Chenopodiaceae Vent. ( in Cronquist, Dahlgren Takhtajan or service activities). The Sarcobataceae family was set up in August 1997 by Heinz -Dietmar Behnke in Taxon, 46, p 503. Within the order of Caryophyllales form the Sarcobataceae with the Phytolaccaceae and Nyctaginaceae a clade.

The family contains only one genus with only two species:

• Sarcobatus baileyi Coville ( Syn: Sarcobatus vermiculatus baileyi var ( Coville ) Jeps. ): It thrives on alkaline soils in semi-arid or arid basin to hills in mixed shrubbery only at altitudes 1200-1900 meters only in Nevada.
• Sarcobatus vermiculatus ( Hook. ) Torr. ( Syn: Batis vermiculata Hook. ): You populated the entire area of the genus.

The two species can coexist in Nevada in habitats and occasionally F1 hybrids were found to be morphologically between the two species, but have malformed leaves and inflorescences; they seem to be sterile.

Swell

• The Sarcobataceae in APWebsite family. ( Section systematics)
• The Sarcobataceae family at DELTA of L.Watson & MJDallwitz.
• Matthew H. Hils, John W. Thieret & James D. Morefield: Sarcobatus in the Flora of North America: Online. (Section Description and systematics)