Bartalinia bidenticola sp. nov.
MycoBank number: MB; Index Fungorum number: IF; Facesoffungi number: FoF 10766;
Etymology:
Holotype: XXXX
Saprobic on dead stems of Biden pilosa Linn var Radiata (Asteraceae). Sexual morph: Undetermined. Asexual morph: Conidiomata 120–130 × 190–200 μm (x̄= 1226 × 1963 μm, n=5), uniloculate, solitary, immersed to semi–immersed, globose to subglobose. Ostiole absent. Peridium 23–30 μm wide, 3–4 layered, comprised of brown cells of Textura globulosa. Conidiogenous cells 1–2 μm wide, filiform, hyaline. Conidia 23–27 × 4–6 µm, x ± SD = 2486 ± 082 × 491 ± 028 µm, fusoid to ellipsoid, straight to slightly curved at the apex, 4-septate, constricted ate the septa, brown in three middle cells and hyaline at the basal and apical cells; basal cells 2–4 µm long, hyaline, obconic to conic with a truncate base, thin-walled; three median cells 14–18 µm long, x ± SD = 1584 ± 081 µm, (second cell from the base pale brown, 6–7 μm long; third cell honey-brown, 4–55 μm long; fourth cell brown, 4–7 μm long), doliiform, wall rugose, versicoloured; apical cells 3–55 µm long, hyaline, subcylindrical, smooth-walled; with 2–3 tubular appendages (mostly 2), unbranced, filliform (–13)17–2351(24–) µm long, x ± SD = 2276 ± 272 µm; basal appendage single, tubular, unbranced, centric 4–8(10–) µm long.
Culture characteristics: Spores germinating on MEA within 24 hr, reaching 50mm after 7 days at room temperature, irregular, undulate, concentric, flat, leathery surface, grey.
Material examined: THAILAND, Chaing Rai Province, Doi Pui, on the dead stems of Biden pilosa Linn var Radiata (Asteraceae), 10 July 2020, Zin Hnin Htet (Holotype —-).
Fig XX a,b Appearance of conidioma on host substrate c Section through conidiomata d Peridium e Conidia on the conidiogenous cells f–i Conidia J–k Germinating conidia l–m Culture Scale bar a= 300 µm, b=200 µm, c=50 µm, d=20 µm, e= 10 µm, f,,g,h,I,j,k,l,m=20 µm