Camptophora schimae H. Yang & K.D. Hyde, 2018

Yang, Hui, Hyde, Kevin D., Karunarathna, Samantha C., Deng, Chao, Gu, Chang-Hua, Yang, Sheng-Ao & Zhang, Zhi-Chang, 2018, New species of Camptophora and Cyphellophora from China, and first report of sexual morphs for these genera, Phytotaxa 343 (2), pp. 149-159 : 155-156

Camptophora schimae H. Yang & K.D. Hyde , sp. nov. Figure. 4

Facesoffungi number: FoF 03409; Index Fungorum number: IF554237

Etymology:—refers to the host plant genus Schima . Holotype:— China, Yunnan Province, on leaves, December 3, 2012, IFRD 9050.

Description:—Saprobic on sugar exudates from insects or foliar epiphytes growing on the upper surface of living leaves forming soot-like coating ( Figure 4A ). Mycelium superficial, black, hyphae dark brown, reticulate-branched, constricted at the septa ( Figure 4B ). Ascomata 98–110 μm diam, 89–102 μm high (x =104 × 93 μm, n=10), black,

scattered on surface of living leaves, subglobose to globose, with short stalk, lacking setae and ostiole. Perdium 16–22 μm wide (x =19 μm, n=20), inwardly hyaline of textura prismatica, dark brown towards the outside, comprised textura angularis ( Figure 4C ). Asci 52–57 × 20–29 μm (x =54 × 24 μm, n=20) 8-spored, bitunicate, ovoid to obpyriform,with short stem ( Figure 4D,E ). Ascospores 23–30 × 7–10 μm (x =27 × 8 μm, n=30), hyaline, fusiform, phragmospore or muriform, with 3–5 transversal septa and 1–4 longitudinal septa, constricted at the septum, with guttula, narrow at the ends ( Figure 4F,G ). Ascospores germinating on PDA within 24 h, mostly from two end cells, rarely germinating from the central cells ( Figure 4H ).

Material examined:— CHINA, Yunnan Province, Puer, on living leaves of Schima wallichii (DC.) Choisy, 3

December 2012, Yang Hui, PE19 (IFRD 9050, holotype), ex-type living culture =IFRDCC2664.

Sequence data:—ITS= MF285231, LSU= MF285233

Notes: This species is morphologically closely related to Camptophora hylomeconis . Our new species differs from C. hylomeconis by having larger asci (x =54 × 24 μm vs x =35 × 18 μm) and larger ascospores (x =27 × 8 μm vs x =15

× 5 μm). The ascospores are fusiform, phragmosporous or muriform, with 3–5 transversal septa and 1–4 longitudinal septa whereas the ascospores of C. hylomeconis are obovoid to pyriform, phragmosporous or didymosporous, with

1–3 transversal septa. Asexual morph was observed in culture. The phylogenetic analysis ( Fig. 1 ) shows that our new species is closely related to C. hylomeconis but is a distinct species within Camptophora .

Figures

FIGURE 1. RAxML tree generated by the phylogenetic analysis of combined data sets of ITS and LSU rDNA sequences. Bootstrap support values ≥ 50% and Bayesian values ≥ 0.80 are shown above their branch. Phaeomoniella prunicola was used as the outgroup taxon. The names of isolates with newly obtained sequences from this study are in red.

FIGURE 4. Camptophora schimae (IFRD 9050, holotype). A Sooty mold-like appearance on leaf surface. B Appearance of colony and ascomata on the host surface. C Vertical section of ascoma. D, E Asci. F,G Ascospores H Germinating ascopore. Scale bars: C = 40μm, D–H= 20 μm.