English:
Title: Comparative morphology of Fungi
Identifier: comparativemorph00gu (find matches)
Year: 1928 (1920s)
Authors: Gäumann, Ernst Albert, 1893-1963; Dodge, Carroll William, 1895-
Subjects: Fungi
Publisher: New York (etc. ) McGraw-Hill Book Company, Inc.
Contributing Library: MBLWHOI Library
Digitizing Sponsor: MBLWHOI Library
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Text Appearing Before Image:
USTILAGINALES 607 1895). In Tuburcinia Ranunculi (Urocystis Anemones) on Ranun- culus (Fig. 402, 5 to 9) there are four daughter nuclei, eight in Tubur- cinia Violae. The promycelium of the former divides into a whorl of three to four branches, in the latter into eight, which separate by septa. In case only three branches are formed, the fourth nucleus remains in the promycelium. Each two branches form two short outgrowths which come together in horseshoe-shaped copulation tubes. In individuals
Text Appearing After Image:
Fig. 403.—Doassansia Sagittariae. 1. Portion of a germinating spore ball. 2. Germi- nation of smut spore and sprouting of conidia. 3. Sprouting of sporidia in nutrient solu- tion. Doassansia Alismatis. 4. Development of a smut sorus. 5. Germinating spore ball. Doassansia punctiformis. 6 to 8. Germination, copulation and formation of sprout cells. Doassansia deformans. 9, 10. Development of a spore ball. Doassansia Martianof- fiana. 11. Young spore ball. (1 X 100; 2, 4 X 500; 3, 6 to 8 X 245; 5 X 200; 9, 10 X 860; 11 X 440; after Setchell, 1892; Dangeard, 1892; Brefeld, 1895; Lutman, 1909; and Rawitscher, 1922.) with three branches, the third branch copulates with the promycelium. In this manner there are formed from the four and eight uninucleate sporidia two and four binucleate sporidia (Kniep, 1921; Rawitscher, 1922). The binucleate sporidia develop to long, narrow hyphae, where the protoplasm and nuclei migrate toward the tip and are abjointed from time to time at the base; gradually in aqueous cultures, development ceases as a result of inanition. In special nutritive solutions after a few
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