Heveicola xishuangbannaensis R.F. Xu, K.D. Hyde & Tibpromma, 2022

Xu, Ruifang, Hyde, Kevin D., Karunarathna, Samantha C., Xu, Jian-Chu, Mortimer, Peter E. & Tibpromma, Saowaluck, 2022, Morphology and multi-gene phylogeny reveal a new fungal genus and species from Hevea brasiliensis latex in Yunnan, China, Phytotaxa 530 (1), pp. 65-76 : 70-71

publication ID

https://doi.org/ 10.11646/phytotaxa.530.1.5

DOI

https://doi.org/10.5281/zenodo.5823951

persistent identifier

https://treatment.plazi.org/id/03ED87B5-FFBB-2308-11A6-DE45FC1027EB

treatment provided by

Plazi

scientific name

Heveicola xishuangbannaensis R.F. Xu, K.D. Hyde & Tibpromma
status

sp. nov.

Heveicola xishuangbannaensis R.F. Xu, K.D. Hyde & Tibpromma , sp. nov. ( Fig. 2 View FIGURE 2 )

Index Fungorum Number: IF558799 ; Facesoffungi Number: FOF10491

Holotype:— HKAS 115759 View Materials

Etymology:— named after the location Xishuangbanna where the fungus was first discovered.

Saprobic on rubber latex of Hevea brasiliensis . Sexual morph: Undetermined. Asexual morph: Hyphomycetous. Colonies on natural substrate consisting of long, effuse, dark synnemata, scattered, somewhat hairy, mass of spores all over the surface. Synnemata 850–1000 × 90–135 μm (x̅=943 × 112 μm, n=6), consisting of pale brown to dark brown, cylindrical, septate, unbranched, smooth-walled conidiophores. Conidia 15–40 × 5–8 μm (x̅=26.6 × 6.5 μm, n=20), catenate, cylindrical, 0–4 to multiseptate (on PDA, conidia up to 20-septate), slightly constricted at median septum, rounded at both ends, formed in acropetal chains, initially hyaline, then pale brown to brown, often with a dark brown band at the septa, guttulate, thick- and rough-walled.

Culture characteristics:— cultures on PDA, colonies slow growing, umbonate, curled, smooth, edges brown, dark brown, mycelia 2.5–6 μm wide, hyaline, septate, conidia 10–70 × 5–12 μm (x̅=27.7 × 6.8 μm, n=30), oblong, up to 20-septate, pale brown to brown, thick- and rough-walled ( Fig. 3 View FIGURE 3 ).

Material examined:— CHINA. Yunnan Province: Xishuangbanna Tropical Botanical Garden, on old rubber latex (oozing from the trunk) of Hevea brasiliensis Müll.Arg. , 24 November 2020, Ruifang Xu , XSBNR-07 ( HKAS 115759 View Materials , holotype); ex-type living cultures KUMCC 21-0086 .

Notes: — In the phylogenetic analyses Heveicola xishuangbannaensis forms a monophyletic branch within Wiesneriomycetaceae with strong statistical support ( Fig. 1 View FIGURE 1 ). Heveicola xishuangbannaensis is similar to Speiropsis and Phalangispora in the shape and colour of the conidia, but it can differ in having a dark brown band at the septa and branches. No sexual morph has been reported so far in Wiesneriomycetaceae .

GBIF Dataset (for parent article) Darwin Core Archive (for parent article) View in SIBiLS Plain XML RDF