. Cultural studies of species of Penicillium. Penicillium -- Cultures and culture media; Fungi -- Cultures and culture media. 76 CULTURAL STUDIES OF SPECIES OF PENICILLIUM. CULTURAL DATA. Color white or greenish gray—not green, grayish to brown or drab; reverse and medium uncolored or sulphur-yellow in some media; litmus reaction strongly alka- line. Potato and bean agar, typical. Potato plugs, weak growth, not adapted to this species. Cohn's solution, weak growth, yellowish-green colonies. Synthetic fluid (Dox's) carbon supplied as: Cane sugar, grew well up to 30 per cent. Lactose 10 per cent
. Cultural studies of species of Penicillium. Penicillium -- Cultures and culture media; Fungi -- Cultures and culture media. 76 CULTURAL STUDIES OF SPECIES OF PENICILLIUM. CULTURAL DATA. Color white or greenish gray—not green, grayish to brown or drab; reverse and medium uncolored or sulphur-yellow in some media; litmus reaction strongly alka- line. Potato and bean agar, typical. Potato plugs, weak growth, not adapted to this species. Cohn's solution, weak growth, yellowish-green colonies. Synthetic fluid (Dox's) carbon supplied as: Cane sugar, grew well up to 30 per cent. Lactose 10 per cent, good colonies. Levulose 3 per cent, good growth, yellowish mycelium, fluid yellowish, alkaline. Galactose 3 per cent, typical alkaline reaction. Glycerin 3 per cent, slow growth. Butterfat, good growth, reverse yellow, fat little changed. Milk, fruiting areas upon glass, mycelium in contact with milk sulphur-yellow; curdling ( per cent calcium chlorid added) very slow—3 weeks; digestion very slow in normal or acid milk, rapid when alkaline; color in milk, none. At 37° C. grew more rapidly than at 20° C. PENICILLIUM SPINULOSUM n. sp. Latin diagnosis.—Coloniis in gelatinavel agaro phaseoli cultis,atro-viridibus, demum fere atris, cito et late in substrato crescentibus, margine sterili lata juvenilibus; parte aeria ex conidiophoris et ex hyphis floccosis sparsis composita; re- verso incolorato; conidio- phoris 105-300 X , vel longioribus, apice b/i incrassato, verticillum basidiorum ^ gerente; fructibus coni- dicis in columno denso 300 usque 500X15-30/* ex catenis conidiorum compositis; conidiis pyri- formibus vel globosis, (, lepto- dermibus, primum lsevi- bus demum ministissime spinulosis; coloniis gela- tinam lente liquefacien- tibus, acidis lacmo. In cultura in labora- torium, Hannover, Ger- mania. Cultivated upon gelatin or bean agar, deep green, spreading broadly in the sub- stratum with broad sterile margin when young; aerial por
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Keywords: ., bookcentury1900, bookdecade1910, bookpublisherwashi, bookyear1910
