Polycnemoideae
Encyclopedia
Polycnemoideae is a subfamily of plants in the Amaranthaceae
family.
white or pinkish tepals. The filaments are united in a short but distinct filament tube (like in Amaranthoideae
subfamily). The genus Polycnemum has bilocular anthers (like Gomphrenoideae
subfamily). In fruit, the tepals are never conspicuously modified.
(In Florula Belgica). It was treated as belonging to the Amaranthaceae family in 1849 by Moquin-Tandon
(in Prodromus systematis naturalis.... Vol 13). E. Ulbrich raised it to subfamilial level in 1934, again within Chenopodiaceae (in Engler & Prantl: Die natürlichen Pflanzenfamilien. Vol 16c).
Phylogenetic research revealed, that the Polycnemoideae are a basal lineage of evolution within the Amaranthaceae (now comprising both former families).
The Polycnemoideae comprises 3 genera
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....
family.
Description
The subfamily Polycnemoideae is distinguishable from all other members of Amaranthaceae by normal secondary growth. The stomata of the leaves are arranged in parallel to the midveins. The flowers have conspicuous chartaceous, scarious,white or pinkish tepals. The filaments are united in a short but distinct filament tube (like in Amaranthoideae
Amaranthoideae
The Amaranthoideae is a subfamily of the Amaranthaceae.The genera Amaranthus and Celosia contain many ornamental species as well as species whose seeds are used as pseudo-cereals and leaves as leaf vegetables....
subfamily). The genus Polycnemum has bilocular anthers (like Gomphrenoideae
Gomphrenoideae
The Gomphrenoideae is a subfamily of the Amaranthaceae....
subfamily). In fruit, the tepals are never conspicuously modified.
Distribution
The Polycnemoideae are distributed in the temperate regions of Europa, Asia, North America and Australia.Taxonomy
The taxon was recognized in 1827 as Tribus Polycnemeae within the Chenopodiaceae family by DumortierBarthélemy Charles Joseph Dumortier
Barthélemy Charles Joseph, Baron Dumortier was a Belgian politician and botanist. Some consider him to be the true discoverer of cell division, although he is rarely credited as such.-Works:...
(In Florula Belgica). It was treated as belonging to the Amaranthaceae family in 1849 by Moquin-Tandon
Alfred 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 Prodromus systematis naturalis.... Vol 13). E. Ulbrich raised it to subfamilial level in 1934, again within Chenopodiaceae (in Engler & Prantl: Die natürlichen Pflanzenfamilien. Vol 16c).
Phylogenetic research revealed, that the Polycnemoideae are a basal lineage of evolution within the Amaranthaceae (now comprising both former families).
The Polycnemoideae comprises 3 genera
- Hemichroa R.Br., with 3 species in Australia
- NitrophilaNitrophilaNitrophila is a small genus of flowering plants in the amaranth family sometimes known by the common name niterworts. The genus name is Greek for "soda-loving", as the plant grows in alkaline or salty soils, such as those rich in borax. These are rhizomatous perennials with fleshy foliage that...
S.Watson, with 6-7 species in North America - Polycnemum L., with 7-8 species in Eurasia