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Lecidea hassei
''Lecidea hassei'' (Hasse's lecidea lichen) is an endolithic lichen that appears as tiny black, gray rimmed, plate-like or crinkled discs between crystals of rock in California.〔 The main body grows ''inside'' solid rock, which is called being, and the crinkled discs above the rock surface are the sexual reproduction structures.〔 It is endemic to California, where it only grows in the lower montane belt, including in deserts and chapparal. 〔〔The Lichen Flora of Joshua Tree National Park An Annotated Checklist, Kerry Knudsen, Mitzi Harding, Josh Hoines, National Park Service, ()〕 It occurs in Joshua Tree National Park.〔Lichens, Joshua Tree National Park, National Park Service, ()〕 The sexual reproduction structures (apothecia) are black, thinly rimmed (70-100 µm ) with unpigmented fungal tissue surrounding black discs in the middle, and up to 2.2 mm in diameter.〔 They rise out of the rock in a flat to convex disc with a constricted base,〔 giving the appearance of tiny raised plates. It grows in open areas on granite, schist, and other acidic rock.〔
It resembles ''Lecidea laboriosa'' but produces schizopeltic acid as a metabolite, instead of 4-O-demethyl planaic acid.〔 The name is from H.E. Hasse, who wrote the 1913 "Lichen Flora of Southern California".〔
It is classified by the fungus as being in the ''Lecidea'' genus of the Lecideaceae fungus family.〔Lichen Flora of the Greater Sonoran Desert Region. Vol 2, Nash, T.H., Ryan, B.D., Gries, C., Bugartz, F., (eds.) 2001, ()〕 Lichen spot tests are negative on both the cortex and medulla (K-, C-, KC-, P-).
==References==
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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