Milesina carpatica Wrobl ., Sprawozdanie Komisji Fizjograficznej 47(II): 166 (1913)

Bubner, Ben, Buchheit, Ramona, Friedrich, Frank, Kummer, Volker & Scholler, Markus, 2019, Species identification of European forest pathogens of the genus Milesina (Pucciniales) using urediniospore morphology and molecular barcoding including M. woodwardiana sp. nov., MycoKeys 48, pp. 1-40 : 1

Milesina carpatica Wrobl., Sprawozdanie Komisji Fizjograficznej 47(II): 166 (1913) Figure 6c

Dryopteris filix-mas (L.) Schott. Austria Steiermark: Graz, basilica Maria Trost, Rettenbachklamm, 11 Jun 1991, J. Poelt, II (GZU, GZU 000335631, GZU 000335632,); Koralpe, Wildbachgraben, ravine forest, 25 Apr 1988, J. Poelt, (M, M-0205477, M-0205478); Koralpe, Wildbachgraben, WNW Wildbach, NW Deutschlandberg, ravine forest, 25 Apr 1988, J. Poelt, II (GZU, GZU 000335634, GZU 000335635); Sausal-Gebirge, rift between Mitteregg and Voregg respectively Annaberg, 12 Apr 1981, J. Poelt, II (GZU, GZU 000335633); Germany, Bayern: Oberbayern, Murnau, Staffelsee, mixed forest, 15 Sep 2017, M. Scholler, II (KR, KR-M-0048589); Niedersachsen: Osterode, Bad Lauterberg, Barbis, forest, scarp, 30 Mar 2014, H. Thiel, II, III (KR, KR-M-0043192); Ukraine, Kolomyja: Knyazhdvir (formerly Galicia, Kniazdwor-Bania, Kolomea), Aug 1913, A. Wróblewski, II (M, M-0290298, type).

Description.

Urediniospores hyaline, ellipsoidal, obovoidal to subglobose, 16.5-32.5 × 10.0-20.0 µm, mostly 20.0-30.0 × 12.5-19.0 µm; wall 0.5-1.8 µm, mostly 0.5-1.0 µm thick; soft (in microscopic mounts they often crack without pressure), very densely echinulate without spine-free areas, spines 1.0-2.0 µm, mostly 1.0-1.8 µm long, irregularly distributed, spines typically straight and perpendicular to the wall, distance between spine bases 0.5-4.0 µm, mostly 0.5-3.0 µm, spine base 0.4-0.7 µm, mostly 0.5-0.6 µm; germ pores scattered, 4-10, mostly 5-7, 1.3-2.5 µm, mostly 1.3-2.5 µm diam., Ø 2.2 µm diam.

Comment.

Germ pores are more difficult to visualise and need more time to evaluate.