Melampsora amygdalinae Klebahn, 1909

on Salix

gall

all four spore types are formed without host alternation on the same plant, however, spermogonia and aecia only rarely formed. Spermogonia orange, subcuticular. Aecia mostly hypophyllous, also on young shoots, orange, dish-shaped, up to 1 mm. Uredinia similar, but with paraphyses; urediniospores elliptic, 11-15 x 19-32 µm, spinulose, but with a smooth apical region. Telia also hypophyllous, subcuticular, brownish black, in small groups delimited by the venation of the leaf.

hostplants

Salicaceae, narrowly monophagous

Salix triandra.

Rarely also on S. pentandra.

notes

Infected plants show a considerale leaf fall, the growth is stunted and young stems produce cankers (Wilson & Henderson).

references

Brandenburger (1985a: 44), Buhr (1965a), Ellis & Ellis (1997a), Gäumann (1959a), González-Fragoso (1925a), Henderson (2000a), Jage, Kruse, Kummer ao (2013a), Klenke & Scholler (2015a), Kozłowska, Mułenko & Heluta (2015a), Kruse (2014a), Negrean (1996b), Poelt & Zwetko (1997a), Redfern & Shirley (2011a), Roskam (2009a), Savchenko, Heluta, Wasser & Nevo (2014c), Termorshuizen & Swertz (2011a), Tomasi (2014a), Tykhonenko (2010a), Vanderweyen & Fraiture (2007a), Wilson & Henderson (1966a), Woods, Stringer, Evans & Chater (2015a).

mod 14.viii.2018