A text-book of mycology and plant pathology . Fig. 75.—A, Protruding fili-form horns of the rust fungus,Gymonsporangium Ellisii on whitecedar; B, teUospore. (May 27,1916.) Mint Rust, Puccinia mcnthce, is also an autoecious Rust, Puccinia sorghi, is widely distributed in maize-growingcountries. Its aecia are less common on various species of Oxalis. 2o6 MYCOLOGY Rust of Stone Fruits, Puccinia pruni-spinoscB, occurs on variousspecies of the genus Prunns in the southern and central United Fig. 76.—Fully expanded cedar apple on red cedar. Long yellow teliosori asfinger-like pro
A text-book of mycology and plant pathology . Fig. 75.—A, Protruding fili-form horns of the rust fungus,Gymonsporangium Ellisii on whitecedar; B, teUospore. (May 27,1916.) Mint Rust, Puccinia mcnthce, is also an autoecious Rust, Puccinia sorghi, is widely distributed in maize-growingcountries. Its aecia are less common on various species of Oxalis. 2o6 MYCOLOGY Rust of Stone Fruits, Puccinia pruni-spinoscB, occurs on variousspecies of the genus Prunns in the southern and central United Fig. 76.—Fully expanded cedar apple on red cedar. Long yellow teliosori asfinger-like projections are seen. (After Jones and Bartholomew, Bull. 257, Stat., Univ. Wise, July, 1915.) The secial stage occurs on Anemone and Hepatica, and is known asyEcidium punctatum. Hollyhock Rust, Puccinia mahacearum (Fig. 72), is found over theworld, where the hollyhock, Althcea rosea, is grown. I RUST FUNGI 207
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