Dothideomycetes » Dothideomycetes, genera incertae sedis » Anguillosporella

Anguillosporella vermiformis

Anguillosporella vermiformis (Davis) U. Braun, Monogr. Cercosporella, Ramularia Allied Genera (Phytopath. Hyphom.) 1: 234 (1995)                                                                                                                                                        Fig. 1

 

= Cylindrosporium vermiforme Davis, Trans. Wis. Acad. Sci. Arts Lett. 18(1): 104 (1915)

 

Index Fungorum number: IF 121640; Facesoffungi number: FoF 06210

 

Parasitic on the surface of living leaves of Alnus incana. Sexual morph: Undetermined. Asexual morph: Thyriothecia 0.5– 2 mm high × 5– 15 mm diam. ( = 0.5 × 13 µm, n = 10), forming amphigenous, subcircular to irregular immarginate, flat dark brown spots, sparsely scattered or not entirely distributed on surface of leaves. Conidiophores 18–26 µm high, 3–4 µm wide ( = 22 × 3 µm, n = 10), straight or slightly curved, brown, vermiform, curved, sigmoid or flexuose, pluriseptate, thick-walled. Conidiogenous cells holoblastic, brown. Conidia 6–10 µm × 4–6 µm ( = 6 × 5 µm, n = 10) solitary, conglobate, hyaline when immature, brown when mature, 1-septate, strongly constricted at the septum, thick-walled.

 

Material examined – USA, Wisconsin, Devils Lake, Sauk Co. on leaves of Alnusincana sp (Betulaceae), 7 August 1913, J.J. Davis (F4817, holotype).

 

Economic significance – The genus Anguillosporella is a plant pathogenic genus, causing large, confluent, brown leaf spots and disease on hosts especially on hazelnut (Corylus avellana) (Pscheidt 2012).