Diseases of economic plants (1910) Diseases of economic plants diseasesofeconom02stev Year: 1910 90 DISEASES OF ECONOMIC PLANTS Fig. 35. — Hypochnose, showing sclerotia on twig at left and rhizomorphic strands on twig at right. Original, gether with the sclerotia and extending along the twig longitudinally are also found silvery, glis- tening, thread-like, fun- gous growths. This fungus hibernates in the sclerotia on or near the terminal bud and thence invades the new twigs as they develop, reaching out upon each leaf, spreading over its under surface in almost invisible thinness, and cau
Diseases of economic plants (1910) Diseases of economic plants diseasesofeconom02stev Year: 1910 90 DISEASES OF ECONOMIC PLANTS Fig. 35. — Hypochnose, showing sclerotia on twig at left and rhizomorphic strands on twig at right. Original, gether with the sclerotia and extending along the twig longitudinally are also found silvery, glis- tening, thread-like, fun- gous growths. This fungus hibernates in the sclerotia on or near the terminal bud and thence invades the new twigs as they develop, reaching out upon each leaf, spreading over its under surface in almost invisible thinness, and causing it to droop, die, and eventually to fall away. Thus in early au- tumn such trees are nearly or quite defoliated. The fruit may be also invaded by the fungus. This an- nual premature loss of leaf is a serious injury to the tree, hindering its proper growth and preventing proper fruitage. Hypochnose, first de- scribed from Brazil, is known from Maine to Florida in the United
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