Fungi, Ascomycetes, Ustilaginales, Uredinales . f teleutosorus; b. teleutospore; Lev.; fertile cells and spores; after both after Werth and Ludwig. c. Puccinia Podophylli Hoffmann.S-; migrations at base of teleutosorus; after Christman. A sporophytic stage of exceptionally brief duration is also found in thespecies of Endophyllum and in the form on Rubus frondosus known asKunkelia nitens1. In both cases the characteristic spores are developed inbasipetal chains (fig. 185), and in both the fertile cells which give rise tothem fuse in pairs (Olive 08; Hoffmann 11), so that the spore mother-cells

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Fungi, Ascomycetes, Ustilaginales, Uredinales . f teleutosorus; b. teleutospore; Lev.; fertile cells and spores; after both after Werth and Ludwig. c. Puccinia Podophylli Hoffmann.S-; migrations at base of teleutosorus; after Christman. A sporophytic stage of exceptionally brief duration is also found in thespecies of Endophyllum and in the form on Rubus frondosus known asKunkelia nitens1. In both cases the characteristic spores are developed inbasipetal chains (fig. 185), and in both the fertile cells which give rise tothem fuse in pairs (Olive 08; Hoffmann 11), so that the spore mother-cells, intercalary cells and spores receive two nuclei each. In Endophyllum thespores are enclosed in a pseudoperidium of barren cells so that the sorusappears as a typical aecidium, in Kunkelia nitens it is of simpler, indefinite 1 Kunkelia nitens (Schwein.) Arthur = Caeoma nitens Burr. VIII] UREDINALES 209 form; in both cases it is borne in association with spermogonia on amycelium of uninucleate cells. Hut the spore germinates like a teleutospore.