Milesina feurichii (Magnus) Grove, Journal of Botany 59: 311 (1921)

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 feurichii (Magnus) Grove, Journal of Botany 59: 311 (1921) Figure 6f, g

Asplenium septentrionale (L.) Hoffm. Germany, Hessen: Werra-Meißner, Eschwege, Albungen, rock, 13 Apr 2013, H. Thiel, II (KR, KR-M-0043159); Sachsen: Vogtland, NNW Jocketa, NSG Steinicht, 9 May 1999, H. Jage & F. Klenke, II (GLM, GLM-F103536); Switzerland, Ticino: Locarno, Sciarana, Cugnasco, vineyard, dry stone wall, 9 Dec 2017, L. Beenken (KR, KR-M-0044955).

Description.

Urediniospores hyaline, ellipsoidal, obovoidal to subglobose, 27.5-42.5 × 17.5-25.0 µm, mostly 30.0-37.5 × 20.0-22.5 µm; wall 0.5-1.8 µm, mostly 0.5-1.0 µm thick; spores densely echinulate with 1-2, mostly 1 round to ovoidal smooth area, typically located centrally, smooth area 7.5-17.5 × 6.5-10.0 µm, mostly 10.0-15.0 × 7.5-10.0 µm, spines 1.5-2.5 µm, mostly 1.8-2.2 µm long, irregularly distributed, spines typically straight and perpendicular to the wall, distance between spine bases 1.0-9.0 µm, mostly 1.0-5.0 µm, spine base mostly around 1 µm; germ pores scattered, 5-11, mostly 6-7, 1.3-3.0 µm, mostly 2.0-2.5 µm diam., Ø 2.4 µm diam.