. Bulletin of the British Museum (Natural History). Botany; Botany. LICHENICOLOUS COELOMYCETES 45. lOjLLm Fig. 21 Minutophoma chrysophthalmae (IMI 237276—holotype). A, Vertical section of pycnidium. B, Surface view of cells from the upper part of the pycnidium which easily separate. C, Conidia. D, Conidiogenous cells. elongated and also pigmented below, and the extremely small conidia. An additional feature might be the absence of a very deeply pigmented area around the ostiole, but this is not emphasized here because the whole of the exposed part of the pycnidium in M. chrysophthalmae might b
. Bulletin of the British Museum (Natural History). Botany; Botany. LICHENICOLOUS COELOMYCETES 45. lOjLLm Fig. 21 Minutophoma chrysophthalmae (IMI 237276—holotype). A, Vertical section of pycnidium. B, Surface view of cells from the upper part of the pycnidium which easily separate. C, Conidia. D, Conidiogenous cells. elongated and also pigmented below, and the extremely small conidia. An additional feature might be the absence of a very deeply pigmented area around the ostiole, but this is not emphasized here because the whole of the exposed part of the pycnidium in M. chrysophthalmae might be considered as equivalent to this zone. The separation of Astervphoma from Minutophoma is discussed above (p. 8). 1. Minutophoma chrysophthalmae D. Hawksw. sp. nov. () Fungus lichenicola. Conidiomata singularia, uniloculata, dispersa, globosa vel subglobosa, semi- immersa, nigra, 20-40 pm diam, cum muris textura angulari 5-8 pm latis e cellulis atrobrunneis 3-4 pm diam sed inferiore solum ex cellulis conidiogenis; ostiolata. Conidiophora desunt. Cellulae conidiogenae enteroblasticae, acrogenae, ampulliformes vel breve ampulliformes, phialidicae, non prolifericae, hyalinae sed basi plerumque pallide brunneae, 3*5—6 x 2-3*5//m. Conidia subcylindrica, hyalina, simplicia, laevia, 2-3*5 x 1*5 pm. Typus: Magna Britannica, Scotia, E. Inverness, Glen Auric, Coille Ruigh na Cuileige, in apotheciis Chrysothrix chrysophthalmae (P. James) P. James & Laundon e ligno Pini, 18. vi. 1976, B. J. Coppins 3196 (IMI 237276—holotypus!; E—isotypus!). Conidiomata pycnidial, semi-immersed, sometimes becoming erumpent and almost superficial, scattered over the surface of the host apothecia, arising singly, black, 20^40 pm diam; wall in the exposed part of the pycnidium composed of 2-3 layers of cells, 5-8 pm thick, dark brown, cells thick-walled, pseudoparenchymatous, tending to be angular, not radially compressed, readily separating in squash preparations, 3-4 pm diam, the u
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