Milesina magnusiana Jaap, Verhandlungen des Botanischen Vereins fuer die Provinz Brandenburg 57: 16 (1915)

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 magnusiana Jaap, Verhandlungen des Botanischen Vereins fuer die Provinz Brandenburg 57: 16 (1915) Figure 6i, j

Asplenium adiantum-nigrum L. France, La Corse: Ajaccio, 5 Mar 1933, O. Jaap, II (M, M-0290299, type); Ireland: Kerry, Dingle peninsula, drywall, 30 Aug 1964, Leuze & Doppelbaur (M, M-0205474).

Description.

Urediniospores hyaline, ellipsoidal to obovoidal, 21.3-38.8 × 15.0-22.5 µm, mostly 30.0-35.0 × 17.5-20.0 µm; wall 1.0-2.0 µm, mostly 1.0-1.5 µm thick; spores echinulate with 1-2 ovoidal smooth areas, typically located centrally, smooth area 11.5-17.5 × 6,3-10.0 µm, mostly 15.0-17.5 × 7.5-10.0 µm, spines 1.2-2.8 µm, mostly 2.0-2.2 µm long, irregularly distributed, spines often erect, distance between spines 0.5-9.0 µm, mostly 3.0-5.5 µm; germ pores scattered, 4-9, mostly 5-6, 2.0-4.5 µm, mostly 2.5-3.0 µm diam., Ø 2.9 µm diam.