Corispermum
Gray bugs Same ( Corispermum marschallii )
The bugs seeds ( Corispermum L. ) is a plant genus of the subfamily Corispermoideae within the family of Amaranthaceae ( Amaranthaceae ). Previously they were made the goosefoot family ( Chenopodiaceae ).
- 4.1 Notes and references
Description
Vegetative characteristics
The bugs seeds are annuals. Young plant parts have a characteristic pubescence of branched trichomes. Your alternate arranged, seated leaves are flat, linear or elliptical and entire. They are little or no fleshy.
Flowers
The inflorescences are spikes. The flowers are single in the axil of a leaf -like supporting sheet, bracteoles ( Brakteolen ) are missing. The flowers are hermaphrodite. The perianth consists usually of three trockenhäutigen, below interconnected tepals that have no vascular bundles and not outlast the flowering period ( anthesis ). In some species the perianth is also missing altogether. There are three stamens present. The pollen grains are from " Chenopodium - type". The spherical ovary bears two free stigma lobes.
Fruits
For fruit time, the axes of the inflorescence extended. The fruit is significantly compressed, elliptic or broadly elliptical, with reinforcement made Makrosklereiden. Its surface is glabrous or hairy. At the edge of the fruit is winged wider or narrower. Vertical seeds contain a horseshoe-shaped embryo, endosperm surrounding the abundant ( perisperm ).
Chromosome number
The chromosome number of the previously studied species is 2n = 18
Photosynthetic
All previously studied species show a leaf anatomy without crown layer ( Corispermum type) and C3 plants.
Dissemination
The bugs seed species are widespread in the temperate zones of Europe, Asia and North America. Some species have been introduced outside their actual distribution area in Eurasia and North America, for example Corispermum declinatum and Corispermum pallasii.
Many species are Psammophyten, that grow on sandy soils.
In Germany two species occur, Gray bugs seed and seed Schmalflügeliger bugs.
System
The genus Corispermum was erected in 1753 by Carl Linnaeus in Species Plantarum, 4. The type species is L. Corispermum hyssopifolium. Corispermum The genus belongs to the tribe Corispermeae, the only tribe of the subfamily Corispermoideae within the family of Amaranthaceae ( Amaranthaceae ). Phylogenetic analyzes confirm the monophyly of the genus.
The genus bugs seeds ( Corispermum ) include at least 65 species. The genus Corispermum have been divided into different sections, but do not reflect the phylogenetic relationships according to research by Juan Juan Xue Ming Li & Zhang, 2011. Instead, more natural clades are recognizable ( called "sections", but without a valid name):
- Cladus 1: You have broadly elliptic or spherical fruits that are clearly emarginate above and have broad wings fruit. These types are mainly found in East Asia: Corispermum confertum Bunge
- Corispermum macrocarpum Bunge var rubrum Fuhet Wang -wei
- Corispermum platypterum Kitag
- Corispermum puberulum Ilyin
- Corispermum stenolepis Kitag
- Corispermum tylocarpum Hance
- Corispermum pamiricum Ilyin
- Corispermum patelliforme Ilyin
- Corispermum dutreuilii Ilyin
- Corispermum candelabrum Ilyin
- Corispermum chinganicum Ilyin
- Corispermum declinatum Steph. ex Stev
- Corispermum dilutum ( Kitag. ) Tsien et G.G.Ma
- Corispermum elongatum Bunge
- Corispermum heptapotamicum Bunge
- Corispermum lepidocarpum Grub
- Corispermum macrocarpum Bunge
- Corispermum mongolicum Ilyin
- Corispermum stauntonii Moq.
- Corispermum tibeticum Ilyin
- Corispermum zaidamicum R.F.Huang
- Corispermum lehmannianum Bunge
- Corispermum orientale Lam.
- Corispermum afghanicum Podlech
- Corispermum aralocaspicum Ilyin
- Ysopblättriger bugs Same ( Corispermum hyssopifolium L.)
- Corispermum lehmannianum Bunge
- Schmalflügeliger bugs Same ( Corispermum intermedium Schweigg. )
- Gray bugs Same ( Corispermum marschallii Stev. )
- Corispermum papillosum ( O.Kuntze ) Ilyin