Plant Parasites of Europe

leafminers, galls and fungi

Trachyspora melospora

Trachyspora melospora (Therry) Dietel, 1923

on Alchemilla

gall

No host plant alternation, no spermogonia or aecia. In fact no uredinia either: the few orange urediniospores are formed in the telia. Telia extensive, mainly hypophyllous, rust coloured. Teliospores one-celled, brown, coarsely verrucose, pedicel with a septum, where the pedicel breaks off; the size is (19)26-30(37) x (23)27-32(45) µm.

host plants

Rosaceae, narrowly monophagous

Alchemilla alpigena, alpina, hoppeana, indivisa, nitida, velebitica.

synonyms

Uromyces alchemillae-alpinae Fischer, 1894.

The form on Alchemillae pentaphyllea has somewhat larger teliospores, and because of that has been described as a separate species, Trachyspora pentaphylleae. Klenke & Scholler consider pentaphylleae a valid species, Helfer considers it a mere variety of melospora.

references

Brandenburger (1985a), Buhr (1964b), Gäumann (1959a), González-Fragoso (1925a), Helfer (2005a), Jage, Scholler & Klenke (2010a), Klenke & Scholler (2015a), Kruse (2019a), Poelt & Zwetko (1997a), Termorshuizen & Swertz (2011a).

Last modified 14.vii.2019