Corispermoideae
Encyclopedia
The Corispermoideae is a subfamily of the Amaranthaceae
, formerly in family Chenopodiaceae.
The flowers are arranged in simple, compact (sometimes globular) partial inflorescences, or in spikes. Bracteoles are missing. The perianth consists of 1-5 white, membranaceous tepals (missing in some Corispermum
species) without vascular bundles, not persistent. The pollen grains of Agriophyllum and Corispermum
are of the "Chenopodium type", of Anthochlamys of the "Anthochlamys type".
The fruits possess supporting tissue consisting of macrosclereids. The seeds have a vertical embryo and copious perisperm.
.
(in Chenopodearum Monographica Enumeratio, Loss, Paris, S. 182). Oskar Eberhard Ulbrich raised it to subfamily level named Corispermoideae in 1934 (in Chenopodiaceae, S. 379–584 in Adolf Engler
& Karl Anton Eugen Prantl
(Edt.): Die natürlichen Pflanzenfamilien, Band 16 c, Engelmann, Leipzig).
Molecular data support the monophyly
of the subfamily.
It contains only one tribe:
Amaranthaceae
The flowering plant family Amaranthaceae, the Amaranth family, contains about 176 genera and 2,400 species.- Description :Most of these species are herbs or subshrubs; very few are trees or climbers. Some species are succulent....
, formerly in family Chenopodiaceae.
Description
The species of the subfamily Corispermoideae are all annual plants. Leaves are mostly alternate, sessile or petiole-like attenuate, laminate, scleromorphic. Typical are branched (dendritic) trichomes (except in Anthochlamys) on plant parts of the current year.The flowers are arranged in simple, compact (sometimes globular) partial inflorescences, or in spikes. Bracteoles are missing. The perianth consists of 1-5 white, membranaceous tepals (missing in some Corispermum
Corispermum
Corispermum is a genus of plants in the goosefoot family. Common names given to members of the genus involve bugseed, tickseed, and tumbleweed. In general, these are erect annual plants with flat, thin leaves and topped with inflorescences of flowers with long bracts...
species) without vascular bundles, not persistent. The pollen grains of Agriophyllum and Corispermum
Corispermum
Corispermum is a genus of plants in the goosefoot family. Common names given to members of the genus involve bugseed, tickseed, and tumbleweed. In general, these are erect annual plants with flat, thin leaves and topped with inflorescences of flowers with long bracts...
are of the "Chenopodium type", of Anthochlamys of the "Anthochlamys type".
The fruits possess supporting tissue consisting of macrosclereids. The seeds have a vertical embryo and copious perisperm.
Photosynthesis pathway
All species studied show non-Kranz corispermoid leaf anatomy and C3 photosynthesisC3 carbon fixation
carbon fixation is a metabolic pathway for carbon fixation in photosynthesis. This process converts carbon dioxide and ribulose bisphosphate into 3-phosphoglycerate through the following reaction:...
.
Taxonomy
The tribe Corispermeae was published in 1840 by Alfred Moquin-TandonAlfred Moquin-Tandon
Christian Horace Benedict Alfred Moquin-Tandon was a French naturalist and doctor.Moquin-Tandon was professor of zoology at Marseille from 1829 until 1833, when he was appointed professor of botany and director of the botanical gardens at Toulouse. In 1850, he was sent by the French government to...
(in Chenopodearum Monographica Enumeratio, Loss, Paris, S. 182). Oskar Eberhard Ulbrich raised it to subfamily level named Corispermoideae in 1934 (in Chenopodiaceae, S. 379–584 in Adolf Engler
Adolf Engler
Heinrich Gustav Adolf Engler was a German botanist. He is notable for his work on plant taxonomy and phytogeography, like Die Natürlichen Pflanzenfamilien , edited with Karl A. E...
& Karl Anton Eugen Prantl
Karl Anton Eugen Prantl
Karl Anton Eugen Prantl , also known as Carl Anton Eugen Prantl, was a German botanist.Prantl was born in Munich, Kingdom of Bavaria, and studied in Munich. In 1870 he graduated with the dissertation Das Inulin. Ein Beitrag zur Pflanzenphysiologie...
(Edt.): Die natürlichen Pflanzenfamilien, Band 16 c, Engelmann, Leipzig).
Molecular data support the monophyly
Monophyly
In common cladistic usage, a monophyletic group is a taxon which forms a clade, meaning that it contains all the descendants of the possibly hypothetical closest common ancestor of the members of the group. The term is synonymous with the uncommon term holophyly...
of the subfamily.
It contains only one tribe:
- Tribus Corispermeae, with 3 genera:
- Agriophyllum M.Bieb., with 6 species in Asian regions with arid climate
- Anthochlamys Fenzl., with 2 species in Asian regions with arid climate
- CorispermumCorispermumCorispermum is a genus of plants in the goosefoot family. Common names given to members of the genus involve bugseed, tickseed, and tumbleweed. In general, these are erect annual plants with flat, thin leaves and topped with inflorescences of flowers with long bracts...
L., with at least 65 species in extratropical regions of Eurasia and North America
Weblinks
- Chenopodiaceae, p. 72 und p. 73 Georg Volkens: Cyclolobaeae-Corispermeae in Adolf Engler & Karl Anton Eugen Prantl: Die Natürlichen Pflanzenfamilien, 3., 1893.