. a Fig. 132.—Cryptomyces laaximun. 1, Cross-sectiou of a twig of Salix incana, with stroma a b ; the mycelium occupies the rind and bast into the cambium, so that a wood-ring for the current year has been only partially developed; the shaded part between a and h is an aerating tissue, formed of loose hyphae, which, with a, forms the stroma proper ; h, the ascogenous layer. (Lens-magnification.) 2, Asci, showing a dry ascus ; one to which water has been added, so that it is elongating ; one ruptured and ejaculating spores. 3, Young stromata in spring, still covered by the epidermis of the Sali
. a Fig. 132.—Cryptomyces laaximun. 1, Cross-sectiou of a twig of Salix incana, with stroma a b ; the mycelium occupies the rind and bast into the cambium, so that a wood-ring for the current year has been only partially developed; the shaded part between a and h is an aerating tissue, formed of loose hyphae, which, with a, forms the stroma proper ; h, the ascogenous layer. (Lens-magnification.) 2, Asci, showing a dry ascus ; one to which water has been added, so that it is elongating ; one ruptured and ejaculating spores. 3, Young stromata in spring, still covered by the epidermis of the Saliy. 4, Willow twig after of the patches of Cryptomyces in autumn, (v. Tubeuf del.) black apothecial cover underneath the epidermis. On rupture of the epidermis, black apothecial cushions emerge and cover large areas of the living twigs. Rain causes the apothecia to become gelatinous, and to swell considerably; on drying the cushions roll up and fall off, leaving scars in the bark (Figs. 132,4).
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Photo credit: © The Bookworm Collection / Alamy / Afripics
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Keywords: ., bookcentury1800, bookdecade1890, bookpublisherl, booksubjectfungi
