. Diseases of plants induced by cryptogamic parasites; introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae. Plant diseases; Parasitic plants; Fungi. 12G rHYCOMY( swarm-spores which escape from the enclosin<^ coats and germinate on seedling ])lants. De Bary ^ found germ-tubes of Cystopus entering all the stomata of Lcpidium sativum and of Ccq^sella, but they only developed further if the part attacked were the cotyledons. Magnus '^ observed an infection of Raphanus Raphanidrum in which the unopened buds were infected by swarm- spores. Oogonia may be found
. Diseases of plants induced by cryptogamic parasites; introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae. Plant diseases; Parasitic plants; Fungi. 12G rHYCOMY( swarm-spores which escape from the enclosin<^ coats and germinate on seedling ])lants. De Bary ^ found germ-tubes of Cystopus entering all the stomata of Lcpidium sativum and of Ccq^sella, but they only developed further if the part attacked were the cotyledons. Magnus '^ observed an infection of Raphanus Raphanidrum in which the unopened buds were infected by swarm- spores. Oogonia may be found in the Howers of this same plant, whereas conidia alone only are present in CapiicU((. White rust is most cbnnnonly observed on Capsella, causing slight local swelling or marked hypertrophy. It is also found to injure radish {Raphanus sativus), horse radish {Coehlcaria armoracia), cress {Lcpidium mtimim), species of cabbage and turnip (Brassica Nap)us, B. nigra, B. Rap)a, B. oleracea), wall-flower (Cheir- anthus Cheiri), water cress {Nasturtium amphibium, etc.), caper-plant {Gapparis spinosa), and other wild and culti- vated plants belonging to, or closely allied to the Cruciferae. Wakker^ investigated the changes l)rought about on a number of Cruci- ferae by Oi/sfajms. Some plants showed little or no deformation or anatomical alteration, others showed much. While the anatomical changes in the various species examined agreed in general, yet. some showed a predominant or exclusive formation of conidia, others of oospores. The changes. Fig. '.iT.—Cystopus poriiUacac, D. C. m, mycelium; ./', basidia ; c, spores with intermediate cells. (After Tiilasiie.) ' Morpholo<iy and Biolo(jy of tht Fuwji. Englisli Edition. - Abhand. d. hotan. Vereinn d. Proi\ Brandenhunj, xxxv. ^ Pringsheim's Jahrbuch, Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may n
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Keywords: ., bookcentury1800, bookdecade1890, bookpublisherl, booksubjectfungi
