Asia Krascheninnikovia Gueldenst., with 8 species in Eurasia and North America, for example: Krascheninnikovia lanata (Pursh) A.Meeuse & A.Smit - winterfat Tribus Dysphanieae: Cycloloma Moq. (Syn.: Cyclolepis Moquin-Tandon) with only one species: Cycloloma atriplicifolium (Sprengel) J.M.Coulter: widespread in Canada, USA and northern Mexico Dysphania R.Br., with about 42 species worldwide, for example: Dysphania ambrosioides - epazote Dysphania anthelmintica - wormseed Suckleya A.Gray, with only one species: Suckleya suckleyana (Torr.) Rydb., a succulent annual from western North America. Teloxys Moq.: with only one species: Teloxys aristata (L.) Moq. (Syn.: Chenopodium aristatum L., Dysphania aristata): from Eastern Europe to temperate Asia, naturalized elsewhere. Fossil record The oldest fossil records for Chenopodioideae are pollen grains recovered from Maastrichtian sediments of the Edmonton Formation in Canada. References Susy Fuentes-Bazan, Pertti Uotila, Thomas Borsch (2012): A novel phylogeny-based generic classification for Chenopodium sensu lato, and a tribal rearrangement of Chenopodioideae (Chenopodiaceae). In: Willdenowia. Vol. 42, No. 1, p. 5-24. Gudrun Kadereit, Evgeny V. Mavrodiev, Elizabeth H. Zacharias & Alexander P. Sukhorukov: Molecular phylogeny of Atripliceae (Chenopodioideae, Chenopodiaceae) (2010): Implications for systematics, biogeography, flower and fruit evolution, and the origin of C4 Photosynthesis. - In: American Journal of Botany 97(10): p. 1664-1687. (chapters description, distribution and systematics) A.P. Sukhorukov, M. Zhang (2013): Fruit and seed Anatomy of Chenopodium and related genera (Chenopodioideae, Chenopodiaceae/Amaranthaceae): Implications for evolution and taxonomy. - PLOS ONE. Vol. 8, № 4. e61906. doi:10.1371/journal.pone.0061906 online External links Caryophyllales subfamilies