Kylindria chinensis Maharachch., H.Y. Su & Cheew, 2018

Maharachchikumbura, Sajeewa S. N., Luo, Zong-Long, Su, Hong-Yan, Al- Sadi, Abdullah M. & Cheewangkoon, Ratchadawan, 2018, Reticulascaceae hyphomycetes from submerged wood in Yunnan, China, Phytotaxa 348 (3), pp. 187-198 : 196

Kylindria chinensis Maharachch., H.Y. Su & Cheew sp. nov.

Index Fungorum number: IF554445; Facesoffungi number: FoF 04477, Fig.6

Etymology:—In reference to China, where the holotype was collected.

Holotype:— MFLU 17–1964 .

Saprobic on submerged decayed wood in aquatic habitats. Sexual morph: Undetermined. Asexual morph: Hyphomycetous. Colonies on natural substratum partly superficial, effuse, scattered, hairy, velvety. Mycelium immersed, composed of septate, unbranched, subhyaline to pale brown, smooth-walled hyphae. Conidiophores (166–) 217–301 μm long (x = 259 μm, SD = 42, n = 10), 8–10 μm wide (x = 9 μm, SD = 1, n = 10), mononematous, macronematous, straight or slightly flexuous, unbranch, 5–7-septate, dark brown, smooth, constricted at septum. Conidiogenous cells phialidic, ampulliform, terminal, integrated, percurrent, smooth. Conidia 17–23 μm long (x = 20 μm, SD = 3, n = 30), 5–7 μm wide (x = 6 μm, SD = 1, n = 30), cylindrical, elongated, round at both end, slightly tapering and curved at base, 0–2-septate, hyaline, smooth.

Material examined: CHINA, Yunnan Province, Dali, saprobic on decaying wood submerged in a stream in Cangshan Mountain, June 2014, S.S.N. Maharachchikumbura, HD 3–5–3, (S-446), (MFLU 17–1964, holotype), ex-type living culture MFLUCC 16–0965.

Notes: Morphology of K. chinensis comparable to those of K. triseptata and K. peruamazonensis . However, the funnel-shaped collarette at the apex of the phialide terminates of K. chinensis and K. peruamazonensis clearly distinct from K. triseptata where it lacks a collarette ( Réblová et al. 2011). Kylindria chinensis can be distinguished from K. peruamazonensis by its cylindrical, slightly longer conidia. Furthermore, the septation of conidia of K. chinensis are commonly visible only during germination and in the phylogenetic analysis ( Fig. 1 , 2 ) K. chinensis formed a distinct lineage apart from K. peruamazonensis .

Figures

FIGURE 1. Consensus phylogram (50% majority rule) of 1,000 trees resulting from a RAxML analysis of the (LSU-RPB2) alignment of the analysed Reticulascaceae and related taxa belonging to class Sordariomycetes. RAxML bootstrap support values (ML), maximum parsimony bootstrap support values (MP) above 50% are given at the nodes (ML/MP). The scale bar represents the expected number of changes per site. The tree was rooted to Peethambara spirostriata (BPI 843537).

FIGURE 2. Consensus phylogram (50% majority rule) of 1,000 trees resulting from a RAxML analysis of the (ITS) alignment of the analysed Reticulascaceae sequences. RAxML bootstrap support values (ML), maximum parsimony bootstrap support values (MP) above 50% are given at the nodes (ML/MP). The scale bar represents the expected number of changes per site. The tree was rooted to Monilochaetes dimorphospora (MUCL 40959).

FIGURE 6. Kylindria chinensis (MFLU 17–1964, holotype). a Colonies on wood. b-c Conidiogenous cells d Conidiophores with attached conidium. e–i Conidia. j Germinating conidium. k–l Colonies on PDA from surface and reverse. Scale bars: b, c = 30 μm, d = 70 μm, e-j=10 μm.