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11) Entoloma subnitidum lmai in Journ. Facul. Agr. Hokkaido Imp.Univ. Sapporo,43 : 168. (1938). f. cyano-nigrum Hongo,f. nov. Gregarium vel solitarium, pileo 3-7 cm lato, conico vel convexo, dein expanso, subumbonato, subrivuloso, sicco, cyano-nigro, margine leviter irregulari vel integro ; carne alba, marginem versus tenuissima ; lamellis profunde sinuatis, plerumque liberis, acie leviter serratis, 5-8 mm latis, subconfertis, albidis dein carneolis ; stipite 4-10 cm longo, 4-7 (-12) mm crasso aequali vel hasi leviter diatato, subconcolori vel pallidiori, sursum albido et pruinoso, deorsum fibrilloso, e farcto clavo; sporis in cumulo carneis, late ellipsoideis, angulatis apiculatis, 1-multi-guttulatis, 10.4 -11.7 x 6.5 - 9.1μ.
Hab. On soil in woods. Summer-Autumn. Ômi (Seta-chô, Sept. 25, 1949-typus in Inst. Phytopathology Univ. Kyoto,Oct. 1,1950). Distr. Endemic Nom. n. Kon-iro-ippon-shimeji (n. n.).
The present form is easily distinguished from the species by the blue-black or nearly black color (“ Dusky Slate Blue",“Bluish Black", " Plumbeous-Black", " blackish Slate " or “ Slate Color ", Ridgway, 1912), and by the sub-crowded lamellae (55-60 reach the stipe, 1 - 2 tiers of sport individuals).
ムラサキイツポシシメジ Entoloma subnitidum lmai は傘の色が “ DuskyViolet " 又は “ Dusky-Blue-Violet " と詑きれているが,筆者の標本では全然紫の色合いはおびていないため(塞には少し〈紫の色合いを有ずることあり),その一品種とみなすことにした。肉低額密でかたぐ,歩Lぐ臭需があり,摺は最初殆んど白色で、あるが,胞子の熟ずる頃になちと “ Light Ochraceous-Salmon " となる。
食毒不明)8月頃にも援坐ずることがあるが, 9月下旬から10月上旬頃がもっとも多い。瀬田町の筆者所有のマツタケ向にて』士,主とLてヒメヤシヤプシの樹下の落葉の多い土上に毎年護生Lているのを見る。
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