. A text-book of mycology and plant pathology . Plant diseases; Fungi in agriculture; Plant diseases; Fungi. 220 MYCOLOGY are Dacryomyces, Guepinia, Calocera. Dacryomyces deliquescens forms gelatinous, or gristly, lumps on tree stumps. Guepinia peziza is sapro- phytic on oak stumps. Calocera viscosa is a branched upright form suggesting the true coral fungi. Family 2. ExOBASiDiACEiE.âThe mycelium of the fungi of this famUy lives parasitically in the chlorenchyma of many shrubs. The fruit body is a thin basidial layer, which breaks out of the tissues of the host. Each basidium develops four bas
. A text-book of mycology and plant pathology . Plant diseases; Fungi in agriculture; Plant diseases; Fungi. 220 MYCOLOGY are Dacryomyces, Guepinia, Calocera. Dacryomyces deliquescens forms gelatinous, or gristly, lumps on tree stumps. Guepinia peziza is sapro- phytic on oak stumps. Calocera viscosa is a branched upright form suggesting the true coral fungi. Family 2. ExOBASiDiACEiE.âThe mycelium of the fungi of this famUy lives parasitically in the chlorenchyma of many shrubs. The fruit body is a thin basidial layer, which breaks out of the tissues of the host. Each basidium develops four basidio- spores; rarely 5 to 6 are formed. Some of the species form galls on the stems, leaves and flowers of ericaceous shrubs, such as species of Vaccinium, Rhododendron, Azalea, Andromeda, etc. There are two genera: Exobasidium (Fig. 84), with eighteen species; and Microstroma, with two species. Exobasidium caccinii (Fig. 84) develops swellings on the leaves of species of Vaccinium of a whitish-red color. Its basidia are club-shaped with four sterigma and four basidiospores. The basidiospores are spindle-shaped, 14 to i6/i long by 2 to 3/1 broad, colorless and smooth. Exobasidium rhododendri forms enlargements of the leaves of species of Rhododendron of greater or less size; colored white, or flesh-colored. Ex- prodiced*t7 Wrs^rf o6a«Ji««j Mi occurs on Ledum in Finland. huckleberry, Gayiussacia Exobasidium andromedcR grows on leaves and rdl" ^ofe^^tniS t^g^°f â '^P^^i^s «f Andromeda in Europe and and swollen calyx. (Pine America. Exobasidium Azalea is found on MayT^.'z?!â¢^'''--^' ^P^"^^. Of -^^-^^^ in North America. Ex- obasidium lauri forms widely spread, yellow then brownish, horny, or club-like galls on the stems of the laurel in Italy, Portugal and the Canary Islands. Exobasidium Warmingii attacks the living leaves of Saxijraga aizoon in Greenland, Tyrol and north Italy. Family 3. âThe hymenium is cobwebby. The basidia have two,
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectfungi, bookyear1917
