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Russula delica
''Russula delica'' is a mushroom that goes by the common name of milk-white brittlegill, and is a member of the ''Russula'' genus, all of which are collectively known as brittlegills. It is mostly white, with ochraceous or brownish cap markings, and a short robust stem. It is edible, but poor in taste, and grows in coniferous, broadleaved, or mixed woods. It can be confused with other white ''Russula'' species and certain white ''Lactarius'' species.
==Taxonomy==
First described by the Swedish mycologist Elias Magnus Fries in 1838, its specific epithet ''delica'' is Latin for "weaned". Older names include Christian Hendrik Persoon's ''Lactarius piperatus'' var. ''exsuccus''.
This species has undergone many taxonomic changes over the years. ''Russula chloroides'' is now considered a distinct species because of the very dense lamellae and blue/green zone at the stem apex of some specimens.〔(【引用サイトリンク】url=http://www.mtsn.tn.it/russulales-news/tx_photos.asp?index=5295 )〕 Gill spacing, gill depth, spore colour and spore ornamentation have also thrown many finds into doubt, and a number of varieties have been described throughout the years.〔Sarnari, M. (1998). Monografia Illustrata del Genere Russula in Europa. Vol. 1. A.M.B. Fondazione.〕 〔Galli, R. (2003). Le Russule 2nd Edition. R. Galli.〕
Mycologist John Burton Cleland collected a form he described in 1935 as ''R. delica'' from under eucalypts in the Mount Lofty Ranges in South Australia, however, this was reclassified as a new species ''R. marangania'' in 1997 by Cheryl Grgurinovic.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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