''Peyronellaea curtisii'' (leaf scorch) is a fungal plant pathogen first described by

Miles Joseph Berkeley Miles Joseph Berkeley (1 April 1803 – 30 July 1889) was an English cryptogamist and clergyman, and one of the founders of the science of plant pathology. Life Berkeley was born at Biggin Hall, Benefield, Northamptonshire, and educated at R ...

and received its current name in 2010. Formerly it was ''Stagonospora'' (syn. ''Stagonosporopsis'') ''curtisii''. It is a cause of leaf blotch, and its substrates include '' Narcissus'', '' Galanthus'' and ''

Hippeastrum ''Hippeastrum'' () is a genus of about 90 species and over 600 hybrids and cultivars of perennial herbaceous bulbous plants. They generally have large fleshy bulbs and tall broad leaves, generally evergreen, and large red or purple flowers. ...

''.

Symptoms

''Peyronellaea curtisii'' causes red-brown spots on leaf tips of ''Narcissus'' and other members of the family Amaryllidaceae; 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. 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 ''Amaryllis'' () is the only genus in the subtribe Amaryllidinae (tribe Amaryllideae). It is a small genus of flowering bulbs, with two species. The better known of the two, ''Amaryllis belladonna'', is a native of the Western Cape region of ...

'', ''

Crinum ''Crinum'' is a genus of about 180 species of perennial plants that have large showy flowers on leafless stems, and develop from bulbs. They are found in seasonally moist areas, including marshes, swamps, depressions and along the sides of strea ...

'', ''

Nerine ''Nerine'' (nerines, Guernsey lily, Jersey lily, spider lily) is a genus of flowering plants belonging to the family Amaryllidaceae, subfamily Amaryllidoideae. They are bulbous perennials, some evergreen, associated with rocky and arid habit ...

'', ''

Sprekelia ''Sprekelia'' was a genus of Mesoamerican plants in the Amaryllis family, subfamily Amaryllidoideae. ''Sprekelia'' plants are sometimes called Aztec lilies or Jacobean lilies although they are not true lilies. This genus is now submerged in ''Z ...

'' and '' Sternbergia''.RHS:Narcissus leaf scorch
/ref>

References

Bibliography

* * Fungal plant pathogens and diseases Pleosporales Fungi described in 2010 {{plant-disease-stub