抄録
(1) The authors have studied on the application of their nitrite-medium for the classification of black aspergilli.
(2) 2-5 days' incubatioll of the agar slant culture at 30-37°C is sufficient to establish a distinction between the growth rates of the moulds.
(3) The species, which grow luxuriantly on the new medium, are Asp. aureus, Nakazawa; Asp. japonicus, Saito and Asp. batatae, Saito, while Asp. luchuensis, Inui attains a moderate growth. Asp. awamori, Nakazawa; Asp. ficuum, Hennings; Asp. fuscus; Asp. niger, Van Tiegem; Asp. niger var L; Asp. niger var S; Asp. pulverulentus, McAlpine and Asp. carbonarius, Bainier give scarcely any sign of growth within the cultural conditions given above.
(4) Black Aspergilli may be divided in two groups (or in three groups) by means of the nitrite-medium.
(5) Asp. luchuensis is distinguished from Asp. awamori by the diffenent adaptability for the new medium.
