. Fig. 194.—Pkrarjiuidhmi subcorliduni on a Rose leaf. The black spots are teleutospore-patches on the under- surface of the leaf. (v. Tubeuf del.) Fig. 103.—Triphragmitim ulmariae on Spiraea Ubnaria. Germinating teleuto- spore, with proniycelia and sporidia. (After Tulasue.) teleutospores are produced in loose patches. The aecidial patches have no covering, but are surrounded by club-shaped paraphyses. The genus frequents only Rosaceae. On species of Hosa: ^ Phragmidium subcorticium (Schrank.). Teleutospores, uredospores, and aecidia on leaves of wild and cultivated roses. (Britain and A
. Fig. 194.—Pkrarjiuidhmi subcorliduni on a Rose leaf. The black spots are teleutospore-patches on the under- surface of the leaf. (v. Tubeuf del.) Fig. 103.—Triphragmitim ulmariae on Spiraea Ubnaria. Germinating teleuto- spore, with proniycelia and sporidia. (After Tulasue.) teleutospores are produced in loose patches. The aecidial patches have no covering, but are surrounded by club-shaped paraphyses. The genus frequents only Rosaceae. On species of Hosa: ^ Phragmidium subcorticium (Schrank.). Teleutospores, uredospores, and aecidia on leaves of wild and cultivated roses. (Britain and America.) Phr. tuberculatum J. Mill I. All the forms of spore occur <m Rosa caniiui. Phr. fusiforme Schrot. \Vhr. rosae-alpinae ()]. On Rosa alpina (Britain). Phr. speciosum (Fr.). On North Anierican roses. Phr. devastatrix Sor. On roses in Asia. ' J. Miiller, " Die Rostpilze d. Rosa. u. Rnbus-arten," Ber. d. botan. Ges., 1885.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectparasit, bookyear1897
