. Bulletin. Natural history; Natural history. June 1941 CARTER: OAK DISEASES IN ILLINOIS 209 N Hill miliaria cly/yrus (Schw.) Cke. by Dr. W. W. Diehl. Single-spore plantings of Nuiiinnilaria riypeus, from red oak, were made on corn meal agar. Abundant germination of asco- spores occurred in 12 hours. The asco- spores germinated by sending out, ter- minally or lateral!), one to several germ tubes from each spore. Branching of the. Fig. 15. — Portion ot a stroma n(Xiimmit- liiriii in virtical section. The ovoid perithecia are enibtdded in the black stromatic tissue, and the black perithecial wal
. Bulletin. Natural history; Natural history. June 1941 CARTER: OAK DISEASES IN ILLINOIS 209 N Hill miliaria cly/yrus (Schw.) Cke. by Dr. W. W. Diehl. Single-spore plantings of Nuiiinnilaria riypeus, from red oak, were made on corn meal agar. Abundant germination of asco- spores occurred in 12 hours. The asco- spores germinated by sending out, ter- minally or lateral!), one to several germ tubes from each spore. Branching of the. Fig. 15. — Portion ot a stroma n(Xiimmit- liiriii in virtical section. The ovoid perithecia are enibtdded in the black stromatic tissue, and the black perithecial wall separates readil> from the stromatic tissue. X 70. germ tubes occurred in 24 hours and after they were 60 /x long. One colony, which had grown froin a single spore, produced in 10 days a growth 80 min. in diameter. The average growth for several colonies was 36 mm. in diameter, produced in 5 days. Cultures of A', clypeus from single- spore plantings on corn meal agar de- \eloped a sparse growth of interwoven, gra\ aerial h)phae. The surface growth was interwoven, gra\-tan and more dense than the aerial growth. Spores placed in sterile distilled water gave an average ger- mination of 28 per cent in 17 hours. N. tlypcus failed to sporulate when grown on artificial media. A culture of this Niim- itiiilarld is shown in fig. 17. A fmigus isolated from 28 specimens of diseased oak appeared to be identical with. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Illinois. Natural History Survey Division. Urbana, State of Illinois, Dept. of Registration and Education, Natural History Survey Division
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