. Cultural studies of species of Penicillium. Penicillium -- Cultures and culture media; Fungi -- Cultures and culture media. 74 CULTURAL STUDIES OF SPECIES OF PENICILLIUM. incolorato; fructibus conidicis usque 100 longis, e basidiis sessilibus, solitariis vel verti- cillatis, aut, e ramis brevissimis vel apicibus hyphorum aeriorum, 1, 2, 3 verticillos ramulorum et basidiorum, catenas longas et divergentes conidiorum gerentum; basidiis basidibus incrassatis, apicibus acuminatis et divergentibus, 7-10 longis; conidiis * ellipticis, lsevibus, pallide lilacinis. Coloniis gelatinam lente l
. Cultural studies of species of Penicillium. Penicillium -- Cultures and culture media; Fungi -- Cultures and culture media. 74 CULTURAL STUDIES OF SPECIES OF PENICILLIUM. incolorato; fructibus conidicis usque 100 longis, e basidiis sessilibus, solitariis vel verti- cillatis, aut, e ramis brevissimis vel apicibus hyphorum aeriorum, 1, 2, 3 verticillos ramulorum et basidiorum, catenas longas et divergentes conidiorum gerentum; basidiis basidibus incrassatis, apicibus acuminatis et divergentibus, 7-10 longis; conidiis * ellipticis, lsevibus, pallide lilacinis. Coloniis gelatinam lente liquefacientibus, alkalinis lacmo. Comm., Prof. G. F. Atkinson et C. W. Edgarton, Ithaca, N. Y. Cultivated in pure gelatin or bean agar white, white to pale lilac in cultures con- taining sugars, more or less loosely floccose with hyphse branched, septate, ascending, 3/i in diameter, producing conidial masses upon very short branches irregularly distrib- uted, or becoming conidiophores toward the apex; reverse of colony not discolored; conidial fructifications up to 100/x in length, consisting of solitary, sessile conidiiferous cells, or verticils of conidiiferous cells, or short branches bearing 1, 2, or 3 verticils of branchlets and conidiiferous cells with long, tangled chains of conidia. Conidiiferous cells flask-shaped, divergent at the apices, acuminate, 7-10/* in length; conidia elliptical, smooth, 2. 5-3 by 2fi, thin walled, pale lilac. Colonies slowly liquefy gelatin, with strongly alkaline reaction. Received from Prof. G. F. At- kinson and C. W. Edgarton, Ithaca, N. A relationship of this spe- cies to the common green forms is very doubtful. The chains of conidia produced break up so quickly and completely in mounting in fluid for examination that it is often difficult to find even a single conidium attached to its sterigma. The hyphae with branches and basidial cells, aside from the produc- tion of long conidial chains, might readily be placed in any one of severa
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