. Bulletin of the British Museum (Natural History) Botany. THE LICHENICOLOUS HYPHOMYCETES 247. Fig. 31 Pseudocercospora lichenum (W 1912/117—holotype). A, Conidiophores, some with young conidia attached to the conidiogenous cells. B, Conidia. flexuose, pale brown, relatively thin-walled, sometimes sparse, 1-5-3 urn wide. Stroma arising on the surface of the apothecial disc, very variable in extent, to 40 urn wide and 20 urn tall but structure often obscure due to mixture with the epithecial tissue and its granular pigments, composed of brown torulose hyphae with cells mainly 3-7 urn long. Coni

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. Bulletin of the British Museum (Natural History) Botany. THE LICHENICOLOUS HYPHOMYCETES 247. Fig. 31 Pseudocercospora lichenum (W 1912/117—holotype). A, Conidiophores, some with young conidia attached to the conidiogenous cells. B, Conidia. flexuose, pale brown, relatively thin-walled, sometimes sparse, 1-5-3 urn wide. Stroma arising on the surface of the apothecial disc, very variable in extent, to 40 urn wide and 20 urn tall but structure often obscure due to mixture with the epithecial tissue and its granular pigments, composed of brown torulose hyphae with cells mainly 3-7 urn long. Conidiophores macronema- tous, mononematous, aggregated into fascicles of 2-3 or originating singly, divergent, usually unbranched, regularly septate, rather short-celled, not to slightly constricted at the septa, smooth-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. British Museum (Natural History). London : BM(NH)