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・ Lactagen
・ Lactalbumin
・ Lactaldehyde
・ Lactaldehyde dehydrogenase
・ Lactaldehyde reductase
・ Lactaldehyde reductase (NADPH)
・ Lactalis
・ Lactam
・ Lactamide
・ Lactantius
・ Lactantius Placidus
・ Lactarius
・ Lactarius acicularis
・ Lactarius affinis
・ Lactarius alnicola
Lactarius argillaceifolius
・ Lactarius aspideoides
・ Lactarius austrovolemus
・ Lactarius baliophaeus
・ Lactarius blennius
・ Lactarius chelidonium
・ Lactarius chromospermus
・ Lactarius chrysorrheus
・ Lactarius cilicioides
・ Lactarius cistophilus
・ Lactarius controversus
・ Lactarius crocatus
・ Lactarius cyanescens
・ Lactarius deliciosus
・ Lactarius deterrimus


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Lactarius argillaceifolius : ウィキペディア英語版
Lactarius argillaceifolius

''Lactarius argillaceifolius'' is a species of fungus in the Russulaceae family. The mushrooms produced by the fungus have convex to flattened drab lilac-colored caps that are up to wide. The cream-colored gills are closely spaced together and extend slightly down the length of the stem, which is up to long by thick. The mushroom produces an off-white latex when injured that stains the mushroom tissue brownish.
The species is found in eastern North America, with a range extending from Canada to northeastern Mexico. It has also been found in pine plantations in Brazil, where it is probably an introduced species. ''Lactarius trivialis'' is a European counterpart that is similar in appearance. In addition to its distribution, it can be distinguished from ''L. argillaceifolius'' by differences in preferred habitat and color differences in the gills, cap, and latex. The ''L. argillaceifolius'' variety ''megacarpus'', a larger form with caps up to wide, occurs under coast live oak and tanoak in the Pacific Coast states and Baja California. Variety ''dissimilis'', described on the basis of a single specimen from South Carolina, differs from the main form in the microscopic structure of the cap cuticle.
==Taxonomy and classification==
The species was first described by American mycologists Lexemuel Ray Hesler and Alexander H. Smith in their 1979 monograph on the North American species of ''Lactarius''.〔 The type specimen—collected by Smith from Oak Grove, Livingston County, Michigan, in July 1972—is housed at the University of Michigan Herbarium.〔 Hesler and Smith simultaneously published the varieties ''dissimilis'' and ''megacarpus'', collected from South Carolina and California, respectively.〔 The variety ''megacarpus'' is commonly known as the "vulgar milkcap".〔
Smith and Hesler classified ''L. argillaceifolius'' in subgenus ''Tristes'', in stirps ''Argillaceifolius''. This grouping of related species, which includes ''L. fumaecolor'', is characterized by the gelatinous cuticle of the stem.〔Hesler and Smith (1979, (p. 364 )).〕

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