Coryneum lanciforme (Fr.) Voglmayr & Jaklitsch

Wang, Caixia, Jiang, Ning, Liu, Chuli, Xu, ZiYan, Lu, Hailong & Ma, Rong, 2025, Morphology and molecular phylogeny reveal new species and records of Diaporthales from Betula in Xinjiang, China, MycoKeys 125, pp. 167-204 : 167-204

Coryneum lanciforme (Fr.) Voglmayr & Jaklitsch , IMA Fungus 6 (1): 146 (2015)

Fig. 7

= Coryneum brachyurum Link , Sp. pl., Edn 4 6 (2): 124 (1825).

≡ Pseudovalsa lanciformis (Fr.) Ces. & De Not. , Comm. Soc. crittog. Ital. 1 (fasc. 4): 206 (1863).

Description.

Pseudostromata semi-immersed in the bark, scattered, conical, 950–1700 μm diam., 600–900 μm high, with 3–8 perithecia arranged irregularly. Ectostromatic disc distinct, circular, brown, 430–650 μm diam. Ostioles black, 75–140 μm diam. Perithecia globular, somewhat flattened at base with black neck, 350–650 μm diam. Asci hyaline, with chitinoid, refractive ring, clavate to elongate-obovoid, (190 –) 207–241 (– 246) × (30 –) 33–40 (– 42) μm, 8 - spored, biseriate. Ascospores fusiform, ends pointed, dark brown, 5–8 - distoseptate, (37.5 –) 39.5–48.5 (– 53) × (13.5 –) 14–17 (– 18.5) (av. = 44.1 ± 4.4 × 15.4 ± 1.6, n = 50) (n = 50) μm, L / W ratio = 2.4–3.6.

Culture characteristics.

Colonies on PDA flat, spreading, with moderate flocculent aerial mycelium and undulating margin, initially white, becoming dark brown and reaching 90 mm diam. after 3 weeks at 25 ° C.

Materials examined.

China • Xinjiang Uygur Autonomous Region, Altay Prefecture, Altay City, Alahake Town, Haxionggou , from dead branches of Betula pendula , 7 October 2024, Rong Ma, Caixia Wang & Hailong Lu ( XJAU 4053 , living cultures CFCC 71587 and CFCC 71653 ) .

Notes.

Coryneum lanciforme is the type species of Pseudovalsa ( Sutton 1975) . However, since Coryneum umbonatum (the type species of Coryneum ) was described earlier ( Nees von Esenbeck 1816), Pseudovalsa was synonymised under Coryneum and P. lanciformis was treated as a synonym of Co. lanciforme ( Rossman et al. 2015) . In this study, we report the first discovery of Co. lanciforme along with its teleomorph in Xinjiang, China, significantly expanding the known geographical distribution of this fungus.

Figures

Figure 7. Coryneum lanciforme from Betula pendula. A, B. Habit of ascostromata on branch; C. Ostioles embedded in ascostroma in section; D. Transverse section through ascostroma; E. Longitudinal section through ascostroma; F. Asci; G. Ascospores. Scale bars: 500 μm (B – E); 20 μm (F, G).