. Comparative morphology and biology of the fungi, mycetozoa and bacteria . Plant morphology; Fungi; Myxomycetes; Bacteriology. CHAPTER V.—COMPARATIVE REVIEW.—DOUBTFUL ASCOMrCETES. 263 The reader is also referred to descriptive and phytopathological literature. Nylander's Synopsis is specially valuable among works on the Lichen-fungi; others will be found fully given in Von Krempelhuber's Geschichte u. Literatur d. Lichenologie. Doubtful Ascomycetes. Section LXXV. There are certain small groups of Fungi which, as far as we know them, show a greater amount of agreement with the Ascomycetes than


. Comparative morphology and biology of the fungi, mycetozoa and bacteria . Plant morphology; Fungi; Myxomycetes; Bacteriology. CHAPTER V.—COMPARATIVE REVIEW.—DOUBTFUL ASCOMrCETES. 263 The reader is also referred to descriptive and phytopathological literature. Nylander's Synopsis is specially valuable among works on the Lichen-fungi; others will be found fully given in Von Krempelhuber's Geschichte u. Literatur d. Lichenologie. Doubtful Ascomycetes. Section LXXV. There are certain small groups of Fungi which, as far as we know them, show a greater amount of agreement with the Ascomycetes than with any other Fungi, and must therefore be classed with the Ascomy- cetes. Some, like the Laboul- benieae and the group formed of Exoascus and Saccharomy- ces, have asci, but are so widely separated by structure and course of development from typical Ascomycetes, that there may be some scruple about uniting them directly with this division of the Fungi; others greatly resemble certain typical Ascomycetes in all that is as- certained of their life-history, but are hitherto only known to produce peculiar small cellular bodies,' bulbils,' without power of germination, instead of spo- rocarps with asci. To the latter category belong the forms Helieosporangimn parasiticiun., Karst., and Pa- pulaspora aspergilliformis, Eid., which have recently been described by Eidam. We can only mention them thus briefly in this place, referring the reader to Eidam's publication; the plants themselves should be further investigated. We pro- ceed to give a short account of the other species. Most of the Laboulbenieae grow on the outer surface of beetles which live in or near water, but some are found on other insects, as the species especially of Eastern Europe, Stigmatomyces Baeri, Peyr., which is common in Vienna on house-flies. They appear like small brushes on the surface of the insect, either singly or often, like Stigmatomyces, forming a thick fur on it. Each of these. Fig. 120. A, d—k


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