A text-book of mycology and plant pathology . meter, in-closing oval thin-skinned asci (9 to i4ju) with eight red lenticular tough-walled spores (4 to ^)- As a parasite of the human skin it was calledLepidophyton. The green mould, which usually grows on malt, isAspergillus clavatus causing a moulding of the substratum. The largestspecies of the group is Aspergillus giganteus, which looks at first super-ficially like a Mucor, but later owing to its grayish-green conidiosporesit is readily separable from the mucor vegetation. Its sterigmata seemto be hollow, communicating with a pore-like ope
A text-book of mycology and plant pathology . meter, in-closing oval thin-skinned asci (9 to i4ju) with eight red lenticular tough-walled spores (4 to ^)- As a parasite of the human skin it was calledLepidophyton. The green mould, which usually grows on malt, isAspergillus clavatus causing a moulding of the substratum. The largestspecies of the group is Aspergillus giganteus, which looks at first super-ficially like a Mucor, but later owing to its grayish-green conidiosporesit is readily separable from the mucor vegetation. Its sterigmata seemto be hollow, communicating with a pore-like opening with the centerof the conidiophore. No perithecia have been found. Other speciesare A. nidjilans (Fig. 50), which can be cultivated readily, A. variansand A. ostiamis, the latter distinguished by an ochraceous black mould Aspergillus niger more properly Sterigmatocystis niger 148 MYCOLOGY (Fig. 51) has a copious literature. Lafar cites forty workers of recentdate, who have studied it. The physician finds it as an occupant of. Fig. 50.—Aspergillus nidulans. A, Mycelium with conidiophores; B, branchedconidiophore; C, spore chains at end of conidiophore; D, small conidiophores; E,young fruit showing development of covering; F, hyphae with swollen ends; G,hypha from interior of fruit-body; H, hyphae with young asci; J, developing perithe-cium. {See Die naiiirlichen Pflanzenfamilien I. i, p. 302.) the human ear in a disease otomycosis. It is associated with the corkdisease which imparts a taste to bottled wine. It grows well in acidsubstrata, as gall-nut extract, tannic acid and has a decided capacity SAC FUNGI CONTINUED 149 for producing oxalic acid. It has stiff slender conidiophores severalmillimeters in height. The terminal part can be studied only afterthe bleaching or removal of the dark masses of conidiophores.
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