Revision of the lichen genus Myelochroa (Ascomycotina: Parmeliaceae) in Korea Author Moon, Kwang Hee Author Ahn, Chorong Author Kashiwadani, Hiroyuki text Journal of Species Research 2015 2015-02-28 4 1 23 32 http://dx.doi.org/10.12651/jsr.2015.4.1.023 journal article 57619 10.12651/JSR.2015.4.1.023 3ad51995-16b7-4028-b3b1-7537042cfb8e 2713-8615 8120342 Myelochroa hayachinensis (Kurok.) Elix & Hale, Mycotaxon 29: 240, 1987. Basinonym: Parmelia hyachinensis Kurok., J. Jpn. Bot. 43: 350, 1968. Type collection: Japan . Honshu. Prov. Rikuchu: Kadomaguchi, Mt. Hayachine. Elevation about 970 m , July 25, 1967 . S. Kurokawa 67081 ( holotype TNS!). For other synonyms, Kurokawa and Arakawa (1997) . Chemistry. Atranorin, galbinic acid, zeorin, leucotylin and its derivatives, salazinic acid and secalonic acid A. Myelochroa hayachinensis resembles M. leucotyliza in having pustules on the thallus; however, it can be distinguished from the latter by producing galbinic acid and having moniliform cells in the medulla. As pointed out by Kurokawa (1968) , this species is the pustulate morph of M. galbina . Myelochroa hayachinensis has been reported only from Korea and Japan . It has been considered to belong to the Koreo-Japanese element as reported by Moon (1999) . In Korea , M. hayachinensis was first reported from Mt. Halla in Jeju Island by Park (1990) . It has been reported from only three localities in Korea ; the other two being Mt. Pukhan, Seoul ( Moon, 1998 ) and Mt. Backwoon ( Jayalal et al. , 2012 ). Specimens examined. Seoul , Songbuk-gu, Mt. Pukhan-san, on bark of Quercus mongolica along Chongnung stream, elevation about 240 m , August 24, 1997 , K.H. Moon 1672 (TNS); Prov. Gyonggy (=Prov. Kyonggi), Koyang city, Mt. Pukhan-san, around Wonhyo temple, on bark of Quercus serrata , elevation about 250 m , July 24, 1997 , K.H. Moon 2453 (TNS). Prov. Gyongsangnam , Milyang city, Sannae-myeon, Samyang-ri, Mt. Gaji, Route Ocheonpyeong Rock, on rocks, elevation about 310 m , September 8, 2009 , K.H. Moon 11315 (NIBR). Prov. Jeollanam , Gohung-gun, Podu-myeon, Namseong-ri, en route from Mabok-sa temple to summit area, on rock with mosses, elevation about 200 m , October 20, 2013 , K.H. Moon 13946 (NIBR). Prov. Jeju (=Prov. Cheju), Namcheju-gun, Namwon-up, Mt. Halla, along trail of Songpanak route to the summit, on bark of Quercus sp. , elevation about 900 m , May 28, 2001 , H. Kashiwadani 43721 (TNS).