. Cultural studies of species of Penicillium. Penicillium -- Cultures and culture media; Fungi -- Cultures and culture media. PENICILLIUM BRKV IC A C LK. 47 Fifteen per cent gelatin in water, typical colony; liquefaction, rapid—5-6 days; litmus. Btrongly alkaline. Prefers alkaline, neutral, or only slightly acid media. Potato agar, spores sometimes refuse even to germinate, bul grow when transferred to gelatin; grows poorly on agar media in'*' from sugar, or peptone, or the by-products of other fungus growth. < !ommon as a secondary growth in such plates. Potato plu good colonies. Conn's so
. Cultural studies of species of Penicillium. Penicillium -- Cultures and culture media; Fungi -- Cultures and culture media. PENICILLIUM BRKV IC A C LK. 47 Fifteen per cent gelatin in water, typical colony; liquefaction, rapid—5-6 days; litmus. Btrongly alkaline. Prefers alkaline, neutral, or only slightly acid media. Potato agar, spores sometimes refuse even to germinate, bul grow when transferred to gelatin; grows poorly on agar media in'*' from sugar, or peptone, or the by-products of other fungus growth. < !ommon as a secondary growth in such plates. Potato plu good colonies. Conn's solution, characteristic but slow growth. Raulin's fluid, germinated, bu1 veryslighl growth. Synthetic fluid (Dox's), carbon supplied as: Cane sugar in agar 3 per cent, failed to grow, same spores transferred to gelatin media grew promptly. Lactose K) percent, plow, characteristic color to conidia. Lactic acid o.'.i per cent, germination only. Levulose per cent, growth characteristic, alkaline reaction to litmus. Galactose 3 per cent, characteristic growth, alkaline reaction to litmus. Glycerin 3 per cent. ,-poie- germinated only, grew well upon addition of cane sugar. Potato starch grew well. Malic acid, germinated only. Butter fat, slow development, finally producing drops of yellow oil which separate out. Milk, rapid growth: curdling ( per cent calcium chlorid added) in 10 days; digestion, rapid; culm- in milk, none. Cooked apple, failed to grow after repeated inoculation. At 37 and 20 I '.. grew equally I io. /'< niriiiuiu brevicauli, Tar. album.' ';. b, c, a",eonidlophores and fructification borne variously and differently branching I < 900); e,f, ripe conidia; g, h, sketch of single hyphseand a rope of hyphae bearing eonidlophores i X 140); j, germinated spore. PENICILLIUM BREVICAULE Saccardo, var. ALBUM Thorn, n. var. Colonic- upon Bugar gelatin white to cream-colored alike above and below upon all media, stricl to sparsely floccose, with t
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Keywords: ., bookcentury1900, bookdecade1910, bookpublisherwashi, bookyear1910
