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Peyronellaea curtisii
''Peyronellaea curtisii'' (leaf scorch) is a fungal plant pathogen first described by Miles Joseph Berkeley and received its current name in 2010.
Formerly it was ''Stagonospora'' (syn. ''Stagonosporopsis'') ''curtisii''.〔(RHS:Narcissus leaf scorch )〕 It is a cause of leaf blotch, and its substrates include ''Narcissus'', ''Galanthus'' and ''Hippeastrum''.〔(Invasive.org )〕
==Symptoms==
''Peyronellaea curtisii'' causes red-brown spots on leaf tips of ''Narcissus''〔(McCain, A.; Pyeatt, L.; Pierce, L. Leaf scorch of Narcissus. California Plant Pathology 1980 No. 50 pp. 1-2 )〕 and other members of the ''Amaryllidaceae'' family; this gives them a scorched appearance that is easily mistaken for frost damage. A yellowish discolouration then spreads down the leaf; more spots may develop as the leaf withers, turns brown and die away. Minute black fungal fruiting bodies may be visible on the foliage. The flowers and flower stalks may also display brown spots and marks.〔(RHS:Narcissus leaf scorch )〕
On hippeastrum bulbs the fungus causes red spots that may develop into soft, sunken patches. Leaf scorch fungus can also affect other members of the ''Amaryllidaceae'', including ''Amaryllis'', ''Crinum'', ''Nerine'', ''Sprekelia'' and '' Sternbergia''.〔(RHS:Narcissus leaf scorch )〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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