Milesina scolopendrii (Fuckel) Jaap, Fungi selecti exsiccati no. 571 (1912)

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 scolopendrii (Fuckel) Jaap, Fungi selecti exsiccati no. 571 (1912) Figure 6n

Asplenium scolopendrium L. ( Phyllitis scolopendrium (L.) Newman). Germany, Baden-Württemberg: Bodensee, Konstanz, N Langenrain, Überlinger-See, NW part of Blisenhalde, 9 May 1999, H. Jage (KR, KR-M-0025400); Reutlingen, Bad Urach, 12 Sep 2017, M. Scholler & R. Buchheit (KR, KR-M-0049049, KR-M-0049050); Reutlingen, Bad Urach, Gütersteiner Wasserfall, 18 Sep 2017, R. Buchheit (KR, KR-M-0049066); Reutlingen, Bad Urach, Uracher Wasserfälle, 12 Sep 2017, M. Scholler & R. Buchheit (KR, KR-M-0049037, KR-M-0049051); Nordrhein-Westfalen, Märkischer Kreis, Balve, Volkringhausen, moist forest, limestone rocks, 16 Aug 2012, H. Thiel (KR, KR-M-0043186); Rheinland-Pfalz, Bad Kreuznach, Hochstetten-Dhaun, forested slope below Dhaun castle, 30 Oct 2013, H. Thiel, II (KR, KR-M-0043153); Switzerland, Graubünden: 1871-1873, L. Fuckel (G, G 00550757, type).

Description.

Urediniospores hyaline, ellipsoidal to obovoidal, clavate, 27.5-49.0 × 17.5-25.0 µm, mostly 27.5-42.5 × 17.5-22.5 µm; wall 0.5-1.8 µm, mostly 0.5-1.2 µm thick; spores echinulate with 1 mostly ovoidal smooth area, located centrally to apically, smooth area 12.5-20.0 × 7.5-11.3 µm, mostly 15.0-17.5 × 7.5/10.0 µm, spines 1.5-2.8 long, irregularly distributed, erect, distances between spine bases 1.0-9.0 µm, mostly 2.0-5.0 µm, sometimes denser toward spore base, spine base 0.8-1.6 µm, mostly 0.9-1.2 µm diam.; germ pores scattered, 4-9, mostly 6-7, 1.25-3.0 µm, mostly 2.0-3.0 µm diam., Ø 2.4 µm diam.