Diseases of plants induced by Diseases of plants induced by cryptogamic parasites; introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae diseasesofplant00tube Year: 1897 126 I'll V COM YCETES. swarm-spores which escape from the enclosin;: coats and germinate on seedling jdants. De l>ary' found germ-tubes of Ci/n(opus entering all the stomata of Lcpidiuiii sativinn and of Capsclla, but they only developed further if the part attacked were the cotyledons. Magnus - observed an infection of Haphanus Baphanistrum in which the unopened buds were infected by swarm- spores
Diseases of plants induced by Diseases of plants induced by cryptogamic parasites; introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae diseasesofplant00tube Year: 1897 126 I'll V COM YCETES. swarm-spores which escape from the enclosin;: coats and germinate on seedling jdants. De l>ary' found germ-tubes of Ci/n(opus entering all the stomata of Lcpidiuiii sativinn and of Capsclla, but they only developed further if the part attacked were the cotyledons. Magnus - observed an infection of Haphanus Baphanistrum in which the unopened buds were infected by swarm- spores. Oogonia may be found in the flowers of this same plant, whereas conidia alone only are present in OapscUa. White rust is most commonly observed on CapsrUit, causing slight local swelling or marked hypertrophy. It is also found to injure radish {llaphanas sativus), horee radish (Cochlcaria armoracia), cress (Lcjudium sativum), species of cabbage and turnip (Brassica Napus, B. nigra, B. Bapa, B. olcracea), wall-flower (Cheir- antJiKs Cheiri), water cress {Nasturtium amphihium, etc.), caper-plant {Ca'pp)aris s2nnosa), and other wild and culti- vated plants belonging to, or closely allied to the Cruciferae. Wakker investigated the changes brought about on a number of Cruci- ferae by Cijstopus. 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 Fio. 37.—Cystojmi portulacae, D. C. m, mycelium; .;', basidia ; c, spores with intermediate cells. (After Tulasiie.) ' Morpholoijy and Biology of the Fungi. English fiditiou. - Abhand. d. hofan. Verehis d. Prov. Brandenburg, xxxv. .) Pringsheim's Jakrbuch, 1892.
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