Ruzenia O. Hilber, The Genus Lasiosphaeria and Allied Taxa (Kelheim): 7 (2002)

Index Fungorum number: IF 530833; MycoBank number: MB 530833Facesoffungi number: FoF 13210; 1 species with sequence data.

Type speciesRuzenia spermoides (Hoffm.) O. Hilber

NotesRuzenia spermoides has glabrous ascomata, cylindrical asci and allantoid ascospores with guttules (Miller & Huhndorf 2004). It is closely related to Synaptospora based on multi-gene analysis (Miller et al. 2014) (Fig. 8).

Figure 8 – Phylogram generated from maximum likelihood analysis based on combined LSU and ITS sequence data of Chaetosphaeriales and Tracyllalales taxa. Ninety-six strains are included in the combined analyses which comprised 1695 characters (1081 characters for LSU, 614 characters for ITS) after alignment. Neurospora crassa MUCL 19026 and Gelasinospora tetrasperma CBS 178.33 (Sordariaceae, Sordariales) are used as outgroup taxa. Single gene analyses were carried out and the phylogenies were similar in topology and clade stability. Tree topology of the maximum likelihood analysis is similar to the Bayesian analysis. The best RaxML tree with a final likelihood value of – 23777.689886 is presented. Estimated base frequencies were as follows: A = 0.231060, C = 0.264793, G = 0.308265, T = 0.195882; substitution rates AC = 1.388486, AG = 1.836207, AT = 1.649563, CG = 0.971659, CT = 6.316962, GT = 1.000000; gamma distribution shape parameter a = 0.460297. Bootstrap support values for ML greater than 75% and Bayesian posterior probabilities greater than 0.95 are given near the nodes. Ex-type strains are in bold. The newly generated sequences are indicated in blue.

Figure 8 – Continued.

Figure 119 Ruzenia spermoides (Material examined – SWEDEN, Uppland, Bladaker; on dead wood of Tilia cordata; 20 September 1992, S-F 242341). a Material label. b Material. c Ascoma on host. d Ascoma cross section. e Peridium. f Asci. g-l Ascospores. Notes: figs f-l stained in KOH reagent. Scale bars: d = 200 µm, e-f = 50 µm, g-l = 10 µm.


  • Ruzenia spermoides