. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. ENDOSPHAEEA. 551 to have an injurious effect on its host, beyond killing a few isolated leaves. End. rubra Schroet. occurs in leaves of Mentha aquatica and Peplis Portula. Phyllobium dimorphum Klebs. Found in leaves of Lysi- machia Nummidaria, Ajuga reptans, Chlora serotina, Erythraea Centaurium. This endophyte may either penetrate into living leaves and there go through its life-history, or it may do so in dead lea
. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. ENDOSPHAEEA. 551 to have an injurious effect on its host, beyond killing a few isolated leaves. End. rubra Schroet. occurs in leaves of Mentha aquatica and Peplis Portula. Phyllobium dimorphum Klebs. Found in leaves of Lysi- machia Nummidaria, Ajuga reptans, Chlora serotina, Erythraea Centaurium. This endophyte may either penetrate into living leaves and there go through its life-history, or it may do so in dead leaves. The zygozoospores have only two cilia, and enter the leaves chiefly through the stomata of the lower surface. Inside the leaf they form long filaments, which make their way between the elements into the vascular bundles of the leaf-ribs, and follow the course of the spiral vessels. Eesting-spores are formed, and give the veins of the leaf a rosary-like appearance. Male and female gametes are pro- duced from the resting cells, and copulate to form zygozoospores. The host-plants are not injured by this endophyte. Chaetophoraceae. Most of the species are aquatic algae which live independent or as epiphytes. Endoclooium polymorphum Frank (see Chlorosphaera endo- phyta Klebs). This form lives endophytic and sometimes intra- cellular in living or dead leaves of Lemna. Entoderma Wittrockii Wille occurs inside the wall, of Ectocarpus (Fig. 327). Periplegmatium and Phaeophila live endophytic in living algae. Trentepohlia endophytica (Eeinsch). In living cells and intercellular spaces of Jungermanniaceae ( FruUania dilatata) and kills Fig. Zt^t. — Bntoderma Wittrockii in the membraue of a species of Alga (Ectocarpus). A, A young one-celled plant just after pene- tration into the alga. B, Plant composed of several cells in the wall of Ectocarpus. C, Plant which has formed sporangia of swarm- spores, one of which is discharged and another is in the act. (After Wille.). Pl
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