. Bulletin of the British Museum (Natural History). Botany; Botany. LICHENICOLOUS COELOMYCETES 47 L2< J t. Fig. 22 Nigropuncta rugulosa (IMI 241409—holotype). A, Infected areolae (x 30). B, Infected areolae showing the emergent conidial masses (x 80). C, Vertical section of pycnidium (lower part) to show the pycnidial wall and conidiogenous cells (x 1020). D, Conidia (x 1020). 3-4 jum latae, Conidia catenata, in cirrhum accumulata, irregulariter, e cellulis numerosis composita, plerumque 20-40 //m diam, atro-olivacea vel nigra, cellulis subglobosis vel angularibus, plerumque simplicibus, ru
. Bulletin of the British Museum (Natural History). Botany; Botany. LICHENICOLOUS COELOMYCETES 47 L2< J t. Fig. 22 Nigropuncta rugulosa (IMI 241409—holotype). A, Infected areolae (x 30). B, Infected areolae showing the emergent conidial masses (x 80). C, Vertical section of pycnidium (lower part) to show the pycnidial wall and conidiogenous cells (x 1020). D, Conidia (x 1020). 3-4 jum latae, Conidia catenata, in cirrhum accumulata, irregulariter, e cellulis numerosis composita, plerumque 20-40 //m diam, atro-olivacea vel nigra, cellulis subglobosis vel angularibus, plerumque simplicibus, rugulosis, plerumque 6-8 pirn diam. Typus: Austria, Steiermark, Schladminger Tauren, Kleinsolk-Obertal, west. Abhange der Kessel- spitze, alt. 1700 m, in thallo lichenis ignoti e saxis schistosis, 12. viii. 1974, ./. Hafellner 3929 (IMI 241409—holotypus!; herb. Hafellner—isotypus!). Conidiomata pycnidial, arising singly, immersed in areolae of the host, the adjacent thalline tissue sometimes proliferating to form a distinct raised margin around the spore mass which recalls a thalline exciple, only exceptionally more that one pycnidium in each areole, ± hyaline but black when viewed from above as a result of the dense spore mass, 100-450 [im wide; ostiolate, the ostiole ± equal to the width of the pycnidium in older conidiomata, mainly ± circular but the margin sometimes invaginated or angular, not clearly differentiated but forming by an irregular opening caused by an expansion of the pycnidium, the pycnidia are at first subglobose or flask-shaped but become cupulate to almost acervular with age; walls poorly demarcated from the host tissues, mainly hyaline but sometimes becoming olive-tinged, especially towards the upper parts, 10-20//m thick, the. 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 Brit
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Keywords: ., bookauthorbritishmuseumnatur, bookcentury1900, booksubjectbotany
