detail

Heracleum sphondylium, from González Fragoso (1924a): urediniospores and teliospores

gall

Aecia hypophyllous pustules without a clear margin, also on the veins and petioles, in dense groups on yellow, galled spots. Uredinia and telia only rarely formed, amphigenous, light brown and blackish brown, respectively. Urediniospores 19-27 x 25-33 µm, with 3-4 germination pores. Teliospores two-celled, short-oval with a reticulate wall structure, on a short, deciduous pedicel.

host plants

Apiaceae, monophagous

Heracleum sphondylium & subsp. elegans + sibiricum, trachyloma.

references

Bahçecioğlu & Kabaktepe (2012a), Brandenburger (1985a: 444), Buhr (1964b), Dauphin & Aniotsbehere (1997a), Ellis & Ellis (1997a), Gäumann (1959a), González Fragoso (1924a), Klenke & Scholler (2015a), Poelt & Zwetko (1997a), Preece & Hick (1994a), Redfern & Shirley (2011a), Termorshuizen & Swertz (2011a), Vanderweyen & Fraiture (2011a), Wilson & Henderson (1966a), Woods, Stringer, Evans & Chater (2015a).