|Manyseed goosefoot (Lipandra polysperma)|
Lipandra polysperma (Syn. Chenopodium polyspermum), common name manyseed goosefoot, is the only species of the monotypic plant genus Lipandra from the subfamily Chenopodioideae in the Amaranthaceae family.
Lipandra polysperma is a non-aromatic, glabrous annual herb. The stems grow erect to ascending or prostrate and are branched with usually alternate, basally sometimes nearly opposite branches. The alternate leaves consist of a petiole and a simple blade. The leaf blade is thin, ovate-elliptic, with entire margins.
The inflorescences consist of loose dichasia in the axils of leaf-like bracts, sometimes of more condensed glomerules of flowers arranged spicately. The flowers are bisexual or pistillate, with (4-) 5 nearly free perianth segments, 1-3 (-5) stamens and an ovary with 2 stigmas.
In fruit, perianth segments remain unchanged. The fruit has a membranous pericarp, which is free from the seed. The horizontally orientated seeds are compressed-globose. The brown to blackish seed coat is undulately striate.
The species was first described in 1753 by Carl Linnaeus as Chenopodium polyspermum in Species Plantarum. After phylogenetic research, Fuentes-Bazan et al. (2012) separated this species from genus Chenopodium that would otherwise have been polyphyletic. The genus Lipandra was first described by Alfred Moquin-Tandon in 1840 (in Chenopodearum monographica enumeratio, p. 19.), replacing an older illegitimate name: Christian Friedrich Lessing's genus Oligandra (1835, not the Asteraceae genus Oligandra from 1832) had only one species, Oligandra atriplicoides, that was soon considered identical with Chenopodium polyspermum.
Synonyms of genus Lipandra Moq.:
- Oligandra Less. 1835 (nom illeg., non Less. 1832)
- Gandriloa Steud. (nom. illeg.)
- Oliganthera Endl. (nom. illeg.)
- Chenopodium [unranked] Polysperma Standl.
- Chenopodium subsect. Polysperma (Standl.) Kowal ex Mosyakin & Clemants
- "Chenopodium polyspermum". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 16 January 2016.
- Fuentes-Bazan, Susy; Uotila, Pertti; Borsch, Thomas (2012). "A novel phylogeny-based generic classification for Chenopodium sensu lato, and a tribal rearrangement of Chenopodioideae (Chenopodiaceae)". Willdenowia - Annals of the Botanic Garden and Botanical Museum Berlin-Dahlem. 42 (1): 14–15. doi:10.3372/wi42.42101. ISSN 0511-9618.
- "Lipandra polysperma". Germplasm Resources Information Network (GRIN). Agricultural Research Service (ARS), United States Department of Agriculture (USDA). Retrieved 2013-07-10.
- Distribution map for the northern hemisphere from: Eric Hultén, Magnus Fries: Atlas of North European vascular plants. 1986, ISBN 3-87429-263-0 at Den virtuella floran..
- Carl von Linné: Species Plantarum. Vol. 1, Impensis Laurentii Salvii, Holmiae 1753, p. 220
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