Tarzetta linzhiensis F.M. Yu& S. Wang, sp. nov.2021
MycoBank Index Fungorum number: IF558483; Facesoffungi number: FoF 09909
Holotype: HKAS 115754.
Morphological description
Sexual morph：Apothecia 18–25 mm broad, short stipitate, cupuliform, scattered, hymenium pale cream to greyish-yellow when fresh, receptacle surface greyish-yellow to brownish-yellow, finely furfuraceous or low-warted, whitish to buff; Margin denticulate and a bit darker than out surface. Subhymenium and medullary excipulum thick, of textura intricata, with hyaline hyphae 4–9 μm wide. Ectal excipulum 70–170 μm broad, of textura subglobulosa/angularis, with cells 11–42 × 6.5–22 μm. Asci 310–385 × 15–20 μm, 8-spored, cylindrical, narrowed to the long base, without croziers, operculate, inamyloid. Paraphyses 2–3 μm wide, septate, straight, filiform. Ascospores [20/1/1, in H2O] (17) 18.5–22.5 (23.5) × (9) 10–13.5μm, Q = 1.4–2.6, Qm = 1.68, uniseriate, hyaline, ellipsoid, smooth-walled, containing two large oil guttules that fuse into one larger guttule at maturity.
Asexual morphs:
Cultures:
Habitat: Saprobic in soil.
Distribution: China, Tibet, Nyingchi County.
GenBank Accession: ITS (MZ438004) and LSU (MZ438007).
Notes: Phylogenetic analyses of the combined LSU and ITS sequence dataset showed that Tarzetta linzhiensis formed a individual branch with ML: 87%, PP: 1.00 support, sister to the clade comprising T. ochracea and T. quercus-ilicis (Fig. 14). In contrast to T. linzhiensis, T. quercusilicis has smaller asci (250–300 × 13–18 μm), and thicker paraphyses (4–5 μm diameter) (Van Vooren et al. 2019). Tarzetta ochracea can be distinguished by the absence of a true stipe, and its larger apothecia (can reach 50 mm diameter) and slightly larger ascospores 19–25 × 11–14 μm (Van Vooren et al. 2019).
Reference: Hyde KD, Suwannarach N, Jayawardena RS, Manawasinghe IS, Liao CF, Doilom M, Cai L, Zhao P, Buyck B, Phukhamsakda C, Su WX, Fu YP, Li Y, Zhao RL, He MQ, Li JX, Tibpromma S, Lu L, Tang X, Kang JC, Ren GC, Gui H, Hofstetter V, Ryoo R, Antonín V, Hurdeal VG, Gentikaki E, Zhang JY, Lu YZ, Senanayake IC, Yu FM, Zhao Q, Bao DF 2021 – Mycosphere notes 325-344 – Novel species and records of fungal taxa from around the world. Mycosphere 12(1), 1101–1156, Doi 10.5943/mycosphere/12/1/14
Tarzetta linzhiensis (HKAS 115754, holotype). a–c Typical mature specimens. d Anatomic structure of a portion of an apothecium. e Asci and paraphyses. f Paraphyses. g–j Asci (j in Melzer’s reagent). k Receptacle surface of pileus. l Ascospores. Scale bars: c = 20 mm, d = 500 μm, e, g–k = 200 μm, f = 100 μm, l = 20 μm.
