Milesina kriegeriana (Magnus) Magnus, 1909

on Abies

spermogonia, aecia

Pinaceae, monophagous

Abies alba, cephalonica, concolor, grandis, nordmanniana, pinsapo.


on Dryopteris

Milesina kriegeriana uredinia on Dryopteris spec.

Dryopteris spec., België, prov. Antwerpen, Balen, de Vennen © Carina Van Steenwinkel

Milesina kriegeriana uredinia on Dryopteris spec.

uredinia

Milesina kriegeriana urediniospores

urediniospores

gall

uredinia hypophyllous, pustulate, covered with a brown epidermis, in which a pore develops; spores short club shaped, remotely spinulose, on a short, plump pedicel, c. 33 x 18 µm. From September on the uredinia produce a white mass of spores during damp weather. Telia at the underside of brown parts of the hibernated fronds. The spores are formed in the epidermis cells; they are irregular in shape, thin-walled, 1-40 celled.

host plants

Dryopteridaceae monophagous

Dryopteris x ambroseae, borreri, carthusiana, dilatata, expansa, filix-mas, pseudomas.

Termorshuizen & Swertz additionally mention Athyrium filix-femima (Woodsiaceae) and Polystichum aculeatum (Dryopteridaceae); on which this was based is not stated.

synonyms

Milesia kriegeriana.

references

Brandenburger (1985a: 6, 15), Bubner, Buchheit, Friedrich ao (2019a), Doppelbaur (1968a, 1973a), Eichhorn (1941a), Ellis & Ellis (1997a), Gäumann (1959a), Gjaerum & Dennis (1976a), González-Fragoso (1925a), Hafellner (1980a), Henderson (2004a), Hick & Preece (1990a), Jage, Klenke, Kruse ao (2016a, Klenke & Scholler (2015a), Kruse, Thiel, Choi ao (2016a), Poelt & Zwetko (1997a), Tănase & Negrean (2007a), Termorshuizen & Swertz (2011a), Tykhonenko & Hayova (2015a), Wilson & Henderson (1966a), Woods, Stringer, Evans & Chater (2015a).

mod 4.v.2019