. Guide to Sowerby's models of British fungi in the Department of Botany, British Museum (Natural History) . d perithecia x 5. Asci andspores X 500. less or coloured; peritheciasmall, globose, on fungi. Thereare seven British species. 203, Hypomyces lateri-tius Tul.—This is a micro-scopic parasite of brick-redcolour and of frequent occur-rence; it grows as a thickfilm over the gills of Lac-In its earlier naturalsize.) Perithecia x 10, single ^&r\-tarillS delicioSllS Stages it is froia white powder. Slfore^ 40^? ^ ^^ paraphyse x 200. gtages it is frOSted OVer with GENUS LI.—
. Guide to Sowerby's models of British fungi in the Department of Botany, British Museum (Natural History) . d perithecia x 5. Asci andspores X 500. less or coloured; peritheciasmall, globose, on fungi. Thereare seven British species. 203, Hypomyces lateri-tius Tul.—This is a micro-scopic parasite of brick-redcolour and of frequent occur-rence; it grows as a thickfilm over the gills of Lac-In its earlier naturalsize.) Perithecia x 10, single ^&r\-tarillS delicioSllS Stages it is froia white powder. Slfore^ 40^? ^ ^^ paraphyse x 200. gtages it is frOSted OVer with GENUS LI.—XYLARIA Hill. Stipitate; stroma corky, rarelyfleshy; perithecia are eight British species. 204. Xylaria polymorphaGrev.—Clubs turgid, corky, ir-regular, whitish-cinereous, thenblack. A common fungus on oldstumps, where it grows gre-gariously. X. hypoxy Ion Grev., the candle-snuff fungus, is a smallerand much more common species. Like X. polymorpha, it grows on Fg- 87.—Xylana polymorpha Grev., aJ , : , section showing the perithecia. (Natu) and about stumps. size.) Ascus x 400,. X-400 ndral 78 GUIDE TO THE MODELS OF FUNGI. GENUS LIJ.—PORONIA Willd. Stipitate; stroma between fleshy and corky, fructifying surface discoid ; perithecia immersed. The fol-m lowing species is the only one known in^ Britain. 205. Poronia punctata Fr.—Stipi-tate, turbinate, externally blackish ; disctruncate, whitish, dotted with the blackostioles. Gregarious on horse and cow dung.
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