Corispermeae
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Gray bug seed ( Corispermum marschallii ), illustration |
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| Scientific name of the subfamily | ||||||||||||
| Corispermoideae | ||||||||||||
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| Moq. |
Corispermeae is the only tribe of the subfamily Corispermoideae within the foxtail family (Amaranthaceae). They used to be part of the goosefoot family (Chenopodiaceae).
description
The species of the subfamily Corispermoideae are annual plants . Their mostly alternately arranged leaves are seated or narrowed like petioles, flat and scleromorphic . Young parts of the plant have characteristic hairs made up of branched trichomes (except for anthochlamys ).
The ährigen inflorescences or simple, compact (sometimes convoluted) part inflorescences have no bracts (Brakteolen). The inflorescence consists of one to five white, membranous bloom bracts ( absent in some Corispermum species), which have no vascular bundles and do not survive the flowering period ( anthesis ). The pollen grains of Agriophyllum and Corispermum are of the "Chenopodium type", those of Anthochlamys of their own "Anthochlamys type".
The fruits have supporting tissue made from macrosklereids . The seeds contain a vertical embryo and abundant perisperm .
Photosynthetic pathway
All of the species examined so far show a leaf anatomy without a crown layer (Corispermum type) and are C 3 plants .
distribution
The subfamily Corispermoideae is common in Eurasia and North America .
Systematics
The Tribus Corispermeae was set up in 1840 by Christian Horace Bénédict Alfred Moquin-Tandon in Chenopodearum Monographica Enumeratio , Loss, Paris, p. 182. In 1934 Oskar Eberhard Ulbrich put the subfamily Corispermoideae in Chenopodiaceae , pp. 379-584 in Adolf Engler and Karl Anton Eugen Prantl (editor): The natural plant families , volume 16 c, Engelmann, Leipzig.
Phylogenetic studies confirm the monophyly of the subfamily Corispermoideae.
The subfamily Corispermoideae contains only one tribe:
- Tribus Corispermeae: With three genera and over 70 species:
- Agriophyllum M.Bieb. : With about six species in the arid regions of Central Asia and the Middle East.
- Anthochlamys Fenzl : With two species in arid regions of Asia.
- Bug seeds ( Corispermum L. ): With at least 65 species in Eurasia and North America.
Individual evidence
- ↑ a b c Alexander P. Sukhorukov: Fruit anatomy and its taxonomic significance in Corispermum (Corispermoideae, Chenopodiaceae). In: Willdenowia , Volume 37, 2007, ISSN 0511-9618 , pp. 63-87, doi : 10.3372 / wi.37.37103 .
- ↑ a b c Gudrun Kadereit, Thomas Borsch, Kurt Weising, and Helmut Freitag: Phylogeny of Amaranthaceae and Chenopodiaceae and the evolution of C 4 photosynthesis , In: International Journal of Plant Science , Volume 164, Issue 6, 2003, p. 959– 986. ISSN 1058-5893 , doi : 10.1086 / 378649
- ↑ Juan Juan Xue & Ming Li Zhang: Monophyly and infrageneric variation of Corispermum L. (Chenopodiaceae), evidence from sequence data psbB-psbH, rbcL and ITS , In: Journal of Arid Land , Volume 3, Issue 4, 2011, p. 240-253. doi : 10.3724 / SP.J.1227.2011.00240 PDF .
Web links
- Chenopodiaceae, p. 72 (PDF; 476 kB) and p. 73 (PDF; 407 kB) Georg Volkens : Cyclolobaeae-Corispermeae in The Natural Plant Families , Part 3, Adolf Engler and Karl Anton Eugen Prantl , 1893. (PDF; 309 kB)