Melampsora arctica von Thümen, 1879
Saxifraga
gall
spermogonia orange, epiphyllous, in small groups. Aecia also orange and epiphyllous, dish-shaped without a clear margin, often near the leaf tip, on yellow spots.
spermogonia, aecia
Saxifragaceae, monophagous
Saxifraga azoides, androsacea, biflora, cespitosa, exarata, geranioides, hypnoides, moschata, oppositifolia, pedemontana subsp. pedatifida, pubescens, rivularis, seguieri.
on Salix
Salix herbacea, from González-Fragoso (1925a): paraphyses, urediniospores
gall
uredinia orange, mainly epiphyllous; spores rotund, 15-22 x 17-25 µm, finely spinulose all over; between the spores numerous capitate, 55-65 µm long paraphyses. Telia usually hypophyllous, subepidermal, brownish.
uredinia, telia
Salicaceae, narrowly monophagous
Salix breviserrata, glaucosericea, herbacea, lanata, pyrenaica, retusa.
synonyms
Melampsora alpina Juel, 1894.
M. arctica is conceived by some authors as component of one complex species with aecia on a wide range of hosts, and uredinia and telia on Salix: Melampsora epitea.
references
Brandenburger (1985a: 44, 216), Gäumann (1959a), González-Fragoso (1925a), Henderson (2000a), Klenke & Scholler (2015a), Losa Quintana (1972a), Mayor (1970a), Pellicier (2001a), Scholler & Schubert (1993a), Termorshuizen & Swertz (2011a), Woods, Stringer, Evans & Chater (2015a).
08/05/2017