P. eryngiiの菌糸生長におよぼす，培養温度，培地の初発pH，培養時の培地pH変化，照度の影響を検討した．温度については，その最適生長温度は30°Cであり，シイタケ，マイタケに比べて，高温で生長するきのこであった．

　培地の初発pHについては，5.0-8.0の広い範囲で生長した．培養後のpH変化は，初発pH6.0以下ではアルカリ方向に，6.5以上では酸性方向に変化した．シイタケ，マイタケが4.0-5.0付近でよく生長するのに対して，このきのこが中性領域でよく生長することがわかった．

　照度については，700 lxでも，暗黒と変わらない生長速度を示し，光照射下で生長が阻害されるシイタケ，マイタケと対照的であった．

　Since 1962, the author has been engaged with various plant diseases in Tohoku district of Japan, with special emphasis on life cycle study and identification of the causal fungus. As a result, thirty two new species (ascomycetes 13, rusts 11, anamorphic fungi 7, smut 1), together with five new genera, have been proposed so far by the author and his colleagues. In this review, several topics, which were of particular interest and were most rewarding with much information, would be presented as follows: 1, on Japanese species of Monilinia (Sclerotiniaceae), the brown rot fungi of fruit trees: 2, on Lambertella corni-maris, a mycoparasite occurring on stroma of Monilinia fructigena on apple fruits: 3, comparative life cycle studies on apple and pear rusts (Gymnosporangium yamadae and G. asiaticum) in Japan: 4, classification and identification of Cristulariella occurring on woody plants in Japan; 5, on "facultative heteroecism" of the Thujopsis rust (anamorph Caeoma asnaro, teleomorph Blastospora betulae) and 6, on large concentric ring spot, an unique leaf disease of Aesculus turbinata caused by Mycodidymella aesculi (synanamorphs Mycopappus aesculi and Blastostroma aesculi).