Diseases of plants induced by Diseases of plants induced by cryptogamic parasites; introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae diseasesofplants00tube Year: 1897 CROXARTIL'M. 383 and curl up. In some districts very common. Aecidial stage unknown. Gymnosporangium. Teleutospores bicellular and with stalks which have gelatinous walls, so that the spores come to form part of a gelatinous mass. The first-formed teleutospores are thick- Fig. 21G.â&>)â«os;)o, the spore-cjishions. 4, others are thick-coated. iian 1, J, â :. M.
Diseases of plants induced by Diseases of plants induced by cryptogamic parasites; introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae diseasesofplants00tube Year: 1897 CROXARTIL'M. 383 and curl up. In some districts very common. Aecidial stage unknown. Gymnosporangium. Teleutospores bicellular and with stalks which have gelatinous walls, so that the spores come to form part of a gelatinous mass. The first-formed teleutospores are thick- Fig. 21G.â&>)â«os;)o, the spore-cjishions. 4, others are thick-coated. iian 1, J, â :. - m .u v. h.|. of . Isolated spores (enlarged); â ', is thin-coated, the Germinating .?pore with proniyceliuin abjointing sporidia (.S). 9, A germinating sporidiuui. (After Tubeuf.) walled, the succeeding ones are tliin-walled. Uredospores do not occur. The aecidia have a thick peridium. The teleuto- V. Tubeuf: (1) CentraUilaft f. Baiter, k. J'arasidnkunth, 1S91 ; with a review of the current Literature. (2) 'Infectionen mit (iymnosporangium.' ForMch- natunviss. Zeitxrhrift, 1S93, p. 7r>. Woernle, ' Untersuchungen d. durch Gymnosporangium-Arten hervorgerufenen Missbildungen,' idem., 1894. Aniericaii Literature, see p. 40L - The gelatinous substance is obviously well-adapted to absorb rain-water and so facilitate germination of the teleutospores in situ; the sporidia pro- duced are then carried ofif by rain or liberated after the cushions dry again.
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