. Wilt disease of cotton, watermelon, and cowpea (Neocosmospora nov. gen.). OIL. ELON Wilt, le vessels are plugged by the DESCEIPTIOX OF PLATE Y. 1. Peritlieciiim and ascospores from upland cotton. Salters Depot, WilliamsburgCo., S. C, Oct. 8,1895. Size 352 by 272 //. For comparison witli PL 1,1, whicb, how-ever, is less higlily magnitied. The ascospores of this perithecium vrere 10 by 10 fxTvith a -wrinkled exospore. Others on the same specimens were 9 by 9 «. More rarelythey were 9 by 10 or 9 by 11 2. Pipe ascus and paraphysis from the same lot of specimens as 1. A paraphysisfro
. Wilt disease of cotton, watermelon, and cowpea (Neocosmospora nov. gen.). OIL. ELON Wilt, le vessels are plugged by the DESCEIPTIOX OF PLATE Y. 1. Peritlieciiim and ascospores from upland cotton. Salters Depot, WilliamsburgCo., S. C, Oct. 8,1895. Size 352 by 272 //. For comparison witli PL 1,1, whicb, how-ever, is less higlily magnitied. The ascospores of this perithecium vrere 10 by 10 fxTvith a -wrinkled exospore. Others on the same specimens were 9 by 9 «. More rarelythey were 9 by 10 or 9 by 11 2. Pipe ascus and paraphysis from the same lot of specimens as 1. A paraphysisfrom a perithecium on cowpea was 18 ix broad (cell next to the end cell). 3. Macroconidia from conidia beds on the surface of killed stems of sea-islandcotton. , James Island. S. C, June 29,1895. All transitions between a and Z> wereobserved. 4. Internal or microconidia from a diseased okra plant. James Island, S. C, July25,1895. Size 8 to 16 by to /./. This okra had been planted in place of cottonwhich wilted and died early in the growing season. Many plants were stems were 2 feet tall and about 1 inch
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Keywords: ., book, bookcentury1800, bookdecade1890, bookpublisherwashingtongpo
