Kirschsteiniothelia tectonae Doilom, Bhat & K.D. Hyde, 2016

de Farias, Antonio Roberto Gomes, Afshari, Naghmeh, Silva, Veenavee S. Hittanadurage, Louangphan, Johnny, Karimi, Omid & Boonmee, Saranyaphat, 2024, Three novel species and new records of Kirschsteiniothelia (Kirschsteiniotheliales) from northern Thailand, MycoKeys 101, pp. 347-370 : 347

Kirschsteiniothelia tectonae Doilom, Bhat & K.D. Hyde, 2016

Fig. 6

Description.

Saprobic on Microcos paniculata ( Malvaceae ) woody litter in terrestrial habitats. Sexual morph: Not observed. Asexual morph: Hyphomycetes . Colonies on the substrate, hairy, superficial, dark brown, scattered, partially grouped. Conidiophores 59-90 × 8.6-12 μm (x̄ = 75 × 10.7 μm, n = 10), superficial, simple, macronematous, mononematous, cylindrical, straight to slightly curved, branched or unbranched, septate, dark brown to black. Conidiogenous cells 7-9.4 × 6-7.3 μm (x̄ = 8 × 6.7 μm, n = 5), monoblastic, determinate, integrated, terminal. Conidia 62.5- 133 × 11 - 18.5(-21) μm (x̄ = 94 × 16 μm, n = 30), cylindrical-obclavate, elongate, straight to slightly curved, rounded being slightly paler at the apex, obconically truncate at the base, 7-12-septa, olivaceous green to brown, smooth-walled.

Culture characteristics.

Conidia germinating on PDA within 24 hours, reaching up to 15-20 mm diam. after one week at room temperature. Germ tubes generated from basal cells. Colony on PDA, dense, circular, flat or effuse, velvety, from front brown at the centre and black at the edge, from reverse, dark brown.

Material examined.

Thailand, Chiang Rai, Mae Fa Luang, Doi Tung , on dead wood of Microcos paniculata , 6 June 2022, N. Afshari 3C2T3R5 (MFLU 23-0416), living culture MFLUCC 23-0272. On dead wood of Dalbergia cana , 3 March 2022, N. Afshari 4C1T2R3 (MFLU 23-0417), living culture MFLUCC 23-0272 .

Known distribution.

Thailand ( Li et al. 2016; this study)

Known hosts.

Tectona grandis ( Li et al. 2016), Microcos paniculata and Dipterocarpus alatus (this study)

Figures

Figure 6. Kirschsteiniothelia tectonae (MFLUCC 23 - 0271, new record) a, b colonies on wood c-e conidiophores with conidia and conidiogenous cells f-k conidia l germinated conidium m, n culture on PDA (front and reverse). Scale bars: 100 μm (a, b); 50 μm (c-e, l); 20 μm (f-k).