the time the plant attains 50 centimetres (say 20 inches) in height. They grow up again quickly. In less than eight days afterwards another gathering may take place, and so on to the end of the year. Chualar, California is named after a Native American term for a goosefoot abundant in the region, probably the California goosefoot (Blitum californicum). Ecology Certain species grow in large thickets, providing cover for small animals. Goosefoot foliage is used as food by the caterpillars of certain Lepidoptera. The seeds are eaten by many birds, such as the yellowhammer (Emberiza citrinella) of Europe or the white-winged fairy-wren (Malurus leucopterus) of Australia. Goosefoot pathogens include the positive-sense ssRNA virusesapple stem grooving virus, sowbane mosaic virus and tobacco necrosis virus. Systematics The genus Chenopodium was described by Carl Linnaeus in 1753 (In: Species Plantarum, Vol. 1, p. 218–222). Type species is Chenopodium album. This generic name is derived from the particular shape of the leaf, which is similar to a goose's foot: from Greek χήν (chen), "goose" and πούς (pous), "foot" or ποδίον (podion), "little foot". In its traditional circumscription, Chenopodium comprised about 170 species. Phylogenetic research revealed, that the genus was highly polyphyletic and did not reflect how species were naturally related. Therefore, a new classification was necessary. Mosyakin & Clemants (2002, 2008) separated the glandular species as genus Dysphania (which includes epazote) and Teloxys in tribe Dysphanieae. Fuentes-Bazan et al. (2012) separated many species to genera Blitum (in tribe Anserineae), Chenopodiastrum, Lipandra, and Oxybasis (like Chenopodium in tribe Atripliceae). They included Rhagodia and Einadia in Chenopodium. Selected species Chenopodium acicularis Chenopodium acuminatum Willd. Chenopodium albescens Chenopodium album – white goosefoot, nickel greens, dungweed, bathua, chandali, chandaliya, fat hen, lamb's quarters, pigweed Chenopodium album ssp. amaranticolor Chenopodium allanii Chenopodium arizonicum – Arizona goosefoot Chenopodium atrovirens – dark goosefoot, pinyon goosefoot Chenopodium aureum – golden goosefoot Chenopodium auricomiforme Chenopodium auricomum – Queensland bluebush Chenopodium baccatum (Syn. Rhagodia baccata) Chenopodium benthamii (Syn.: Rhagodia latifolia) Chenopodium berlandieri – pitseed goosefoot, southern huauzontle, lambsquarters Chenopodium berlandieri ssp. nuttalliae (Saff.) H.D.Wilson & Heiser Chenopodium berlandieri var. bushianum Chenopodium berlandieri var. zschackii Chenopodium brandegeeae – Brandegee's goosefoot Chenopodium bryoniifolium Bunge – Korean goosefoot Chenopodium bushianum – village goosefoot Chenopodium candolleanum (Syn.: Rhagodia candolleana) Chenopodium curvispicatum Chenopodium cycloides – sandhill goosefoot Chenopodium desertorum – desert goosefoot Chenopodium desertorum ssp. anidiophyllum Chenopodium desertorum ssp. desertorum Chenopodium desertorum ssp. microphyllum Chenopodium desertorum ssp. rectum Chenopodium