Chi Dysphania được ghi nhận có 46 loài, được phân thành 4 nhánh:[2][3]
Dysphania sect. Adenois (Moq.) Mosyakin & Clemants: 15 species, native in South and Middle America, now distributed worldwide from the tropics to warm-temperate regions:
Dysphania ambrosioides (L.) Mosyakin & Clemants - Epazote, Mexican-tea: native in North- and South America, naturalized in other continents.
Dysphania chilensis (Schrad.) Mosyakin & Clemants - native in Argentina and Chile.
Dysphania multifida (L.) Mosyakin & Clemants - Cut-leaf goosefoot, small-leaved wormseed: native in South America, introduced from the tropics to warm-temperate regions.
Dysphania sect. Botryoides (C.A.Mey.) Mosyakin & Clemants: with two subsections:
Dysphania sect. Botryoides subsect. Botrys (Aellen & Iljin) Mosyakin & Clemants: with 9 species, worldwide, native in southern North America, northern South America, southern Eurasia and Africa.
Dysphania botrys (L.) Mosyakin & Clemants - Jerusalem-oak, feather-geranium: native from Middle Europa to China (Xinjiang), naturalized or cultivated in other temperate regions.
Steven E. Clemants & Sergei L. Mosyakin (2003): Dysphania - online. In: Flora of North America Editorial Committee (ed.): Flora of North America North of Mexico. Volume 4: Magnoliophyta: Caryophyllidae, part 1. Oxford University Press, New York, ISBN0-19-517389-9, p. 267. (chapters description, distribution, systematics)
Sergei L. Mosyakin, Steven E. Clemants (2008): Further Transfers of glandular-pubescent species from Chenopodium subg. Ambrosia to Dysphania (Chenopodiaceae). In: Journal of the Botanical Research Institute of Texas Vol.2, Nr. 1, p. 425–431. (chapter systematics)
Gelin Zhu, Sergei L. Mosyakin & Steven E. Clemants (2003): Chenopodiaceae: Dysphania – online. In: Wu Zhengyi, Peter H. Raven, Deyuan Hong (Hrsg.): Flora of China. Volume 5: Ulmaceae through Basellaceae. Science Press u.a., Beijing u.a., ISBN1-930723-27-X, p. 376. (chapter description, vernacular name)
Gudrun Kadereit, Evgeny V. Mavrodiev, Elizabeth H. Zacharias, Alexander P. Sukhorukov (2010): Molecular phylogeny of Atripliceae (Chenopodioideae, Chenopodiaceae): Implications for systematics, biogeography, flower and fruit evolution, and the origin of C4 Photosynthesis. In: American Journal of Botany, 97(10), p. 1664–1687.
Pertti Uotila (2011): Chenopodiaceae (pro parte majore). – In: Euro+Med Plantbase – the information resource for Euro-Mediterranean plant diversity. Dysphania. Euro+Med Plantbase, retrieved 30 November 2011.