Cladosporium iridis (Fautrey & Roumeguères) de Vries 1952

on (Gladiolus), Iris

Cladosporium iridis

from Bensch, Braun, Groenewald & Crous (2012a); K Bensch del.; scale bar = 10 µm

gall

leaf spots amphigenous, necrotic, up to 8 mm long, surrounded by a darker margin. Colonies amphigenous, dark brown, in the centre of the spot. Conidiophores mostly in fascicles, 25-120 µm. Conidia olivaceous brown, solitary or in short chains, 15-23 x 30-60 µm, mostly 2-4-septate.

hostplants

Iridaceae, oligophagous

Gladiolus x gandavensis; Iris aphylla, bismarckiana, bucharica, caucasica, crocea, decora, foetidissima, x germanica, glaucecens, graminea, halophila, humilis, iberica & subsp. elegantissima, japonica, kemaonensis, latifolia, orientalis, pallida, paradoxa, pumila, sibirica, songarica, spuria & subsp. demetrii + musulmanica, tingitana, tuberosa, variegata, versicolor.

In North Africa also known from Hemerocallis (Xanthorrhoeaceae).

synonyms

Heterosporium gracile (Wallroth) Saccardo, 1886.

references

Bensch, Braun, Groenewald & Crous (2012a), Heucher, Braun & Schubert (2005a), Kozłowska, Mułenko & Heluta (2015a), Unamuno (1942a, 1943a).

mod 3.vi.2018