identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
9305B8188B5759F88435BFFBEBEB7B24.text	9305B8188B5759F88435BFFBEBEB7B24.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Biscogniauxia barriae J. B. Tanney and Y. M. Ju 2026	<div><p>Biscogniauxia barriae J. B. Tanney and Y. M. Ju sp. nov.</p><p>Figs 1, 2</p><p>Etymology.</p><p>Named in honor of Canadian mycologist Margaret Elizabeth Barr-Bigelow for her contributions to pyrenomycetes and in recognition of her initial collection of B. barriae (WSP 72952).</p><p>Holotype.</p><p>Canada • British Columbia, Vancouver Island, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-123.560394&amp;materialsCitation.latitude=48.375774" title="Search Plazi for locations around (long -123.560394/lat 48.375774)">Metchosin</a>, 48°22'32.8"N, 123°33'37.4"W, 100 m elev., on bark of dead standing Acer macrophyllum, 24 February 2024, J. B. Tanney &amp; B. Weir, DAVFP 30506 (preserved in a metabolically inactive state as dried specimen), living culture (ex-type) DAOMC 256939, GenBank numbers: PZ 618325 (ITS), PZ 618324 (LSU), PZ 617968 (BenA), and PZ 617971 (RPB 2) .</p><p>Description.</p><p>Sexual morphology. Stromata applanate to pulvinate, 4–170 mm long × 3–120 mm wide × 1–2 mm thick, with rounded to steep-sided margins, clearly demarcated from the substrate and sometimes slightly detached at the edge, frequently confluent; outer dehiscing layer not observed; mature surface dull to somewhat glossy, greyish brown to blackish grey or black; carbonaceous beneath the surface and between perithecia, with carbonaceous tissue encasing individual ostioles; tissue beneath perithecia 0.1–0.3 mm thick, carbonaceous; underlying bark tissue blackened, often conspicuously so between bark laminae. Perithecia short-cylindrical to obovoid or flask-shaped, base flattened, frequently laterally compressed, 0.6–0.8 (– 0.9) mm × 0.2–0.4 mm, opening centrally through individual ostioles, two adjacent perithecia rarely sharing a common ostiole. Ostioles concolorous with surrounding stroma, (20 –) 23–30 (– 40) μm diam, evenly distributed or in small clusters, coarsely papillate, (100 –) 138–182 (– 237) μm at base, up to 10 ostioles per 10 mm 2. Asci cylindrical, 8 - spored, ascospores arranged obliquely uniseriate, short-stipitate, (95 –) 100–120 (– 125) × (8 –) 9–11 (– 12) μm, pars sporifera (72 –) 75–94 (– 101) μm. Apical apparatus short-cylindrical to cuneiform or goblet-shaped, 2.5–6 × 3–6 μm (x ̄ = 4.5 × 4.8 μm; n = 15), bluing in Lugol’s solution and Melzer’s reagent. Paraphyses sparse, hyphal, unbranched, thin-walled, septate, 4–5 (– 6) μm wide at base, tapering to 1 μm. Ascospores one-celled, broadly ellipsoid to somewhat ellipsoid-equilateral, (12.5 –) 14–15.5 (– 17) × (6 –) 6.5–7.5 (– 8.5) μm (x ̄ = 14.6 × 6.9 μm; n = 153), Q = (1.7 –) 2–2.3 (– 2.7) (x ̄ = 2.1), dark brown to blackish brown, smooth-walled, with a conspicuous, unilateral, straight germ slit running along the entire or almost the entire spore length on the most convex side, cellular appendage not observed.</p><p>Asexual morphology.</p><p>On 2 % MEA: conidiophores nodulisporium-like, arising in loose tufts from aerial mycelia, hyaline to pale brown; stipes septate, upright, straight, 100–290 × 4–6 μm, hyaline to brown with maturity, smooth to roughened, branched. Conidiogenous cells cylindrical to clavate, hyaline to light brown, smooth to finely roughened, (6 –) 8–12.5 (– 20) × (2 –) 3–4 (– 4.5) μm (n = 103), bearing poroid conidial secession scars especially around the apical region. Conidia produced holoblastically in sympodial sequence, hyaline, smooth, obovoid to clavate, (4.5 –) 5.5–7 (– 9) × 3–4 μm, apiculate to flattened at base.</p><p>Culture characters.</p><p>Colonies on MEA at 20 ° C in the dark reaching 74 mm diam or completely overgrowing 10 - cm Petri dish in 7 d; after 7 d colonies flat, aerial mycelia white to faintly salmon, floccose, sometimes bearing honey to pink exudate droplets; white with hints of orange-pink, reverse white with occasional brown sectors. Colonies on PDA at 20 ° C in the dark completely overgrowing 10 - cm Petri dish in 7 d; after 7 d colonies flat, densely floccose to cottony, bearing honey to pink-red exudate droplets; white with reddish hues, reverse pink to ruby red from soluble pigments with occasional brown sectors. Colonies on OA at 20 ° C in the dark completely overgrowing 10 - cm Petri dish in 7 d; after 7 d colonies flat, aerial mycelia white to faintly salmon, floccose, sometimes bearing honey to pink exudate droplets; white with hints of orange-pink, reverse white with faint honey to brown hues.</p><p>Additional specimens examined.</p><p>Canada • British Columbia, Vancouver Island, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-123.453415&amp;materialsCitation.latitude=48.64139" title="Search Plazi for locations around (long -123.453415/lat 48.64139)">Sidney</a>, 48°38'29.0"N, 123°27'12.3"W, 32 m elev., dead young branches of Acer macrophyllum, 20 December 1997, M. E. Barr, WSP 72952 • British Columbia, Vancouver Island, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-123.573&amp;materialsCitation.latitude=48.367554" title="Search Plazi for locations around (long -123.573/lat 48.367554)">Metchosin</a>, 48°22'03.2"N, 123°34'22.8"W, 120 m elev., on dead standing Alnus rubra, 14 April 2024, J. B. Tanney &amp; B. Tanney, DAVFP 30507 (preserved in a metabolically inactive state as dried specimen), JBT-1036 • British Columbia, Vancouver Island, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-123.395134&amp;materialsCitation.latitude=48.46125" title="Search Plazi for locations around (long -123.395134/lat 48.46125)">Saanich</a>, 48°27'40.5"N, 123°23'42.5"W, 30 m elev., on dead branches of standing Crataegus sp., 15 July 2025, J. B. Tanney, DAVFP 30508 (preserved in a metabolically inactive state as dried specimen), JBT-1048 • British Columbia, Vancouver Island, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-123.395134&amp;materialsCitation.latitude=48.46125" title="Search Plazi for locations around (long -123.395134/lat 48.46125)">Saanich</a>, 48°27'40.5"N, 123°23'42.5"W, 30 m elev., on dead branches of standing Crataegus sp., 11 June 2026, J. B. Tanney, DAVFP 30509 (preserved in a metabolically inactive state as dried specimen), JBT-1069 • British Columbia, Vancouver Island, Metchosin, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-123.506805&amp;materialsCitation.latitude=48.38453" title="Search Plazi for locations around (long -123.506805/lat 48.38453)">Witty’s Lagoon Regional Park</a>, 48°23'04.3"N, 123°30'24.5"W, 14 m elev., isolated as endophyte from surface-sterilized Pseudotsuga menziesii needle fragment incubated on 2 % malt extract agar, 16 June 2019, J. B. Tanney, DAOMC 256931 • Ibid. DAOMC 252811 • Ibid. DAOMC 256937 • Ibid. JTCC -837 • Ibid. JTCC -421 • British Columbia, Vancouver Island, Mesachie Lake, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-124.143776&amp;materialsCitation.latitude=48.82358" title="Search Plazi for locations around (long -124.143776/lat 48.82358)">Cowichan Lake Research Station</a>, 48°49'24.9"N, 124°08'37.6"W, 448 m elev., isolated as endophyte from surface-sterilized Pseudotsuga menziesii needle fragment incubated on 2 % malt extract agar, 8 June 2022, J. B. Tanney, C. D’Amours, A. Dicaire, &amp; V. Waring, JTCC -1167 .</p><p>Habitat and distribution.</p><p>Foliar endophyte of Pseudotsuga menziesii and stromata from dead Acer macrophyllum, Alnus rubra, and Crataegus sp. on Vancouver Island, Canada; also reported from A. macrophyllum in Washington, USA (J. M. Hulbert, pers. comm.).</p><p>Notes.</p><p>The ITS – BenA – RPB 2 phylogeny places Biscogniauxia barriae within a clade containing B. anceps, B. capnodes, and B. nummularia . Morphologically, B. barriae is distinguished from these and other related species by its absence of hyaline septate ascospores ( B. anceps) and longer ascospores: (12.5 –) 14–15.5 (– 17) × (6 –) 6.5–7.5 (– 8.5) μm vs. 8.5–15 × 5–7.5 μm ( B. capnodes), 10–13 (– 14) × (6.5 –) 7.5–8.5 μm ( B. nummularia), 11.5–14 × 6.5–8.5 μm ( B. magna), 8.8–11.7 × 5.3–6.5 μm ( B. mangiferae), and 11–15 × 5.7–7 μm ( B. petrensis) (Samarakoon et al. 2022; Hyde et al. 2020; Ju et al. 1998; Rogers et al. 1996). Stromata of B. barriae are variable in size, forming small patches on branches and smaller stems and becoming extensive on larger stems.</p></div>	https://treatment.plazi.org/id/9305B8188B5759F88435BFFBEBEB7B24	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Pensoft via Plazi	Tanney, Joey B.;Feau, Nicolas;Ju, Yu-Ming	Tanney, Joey B., Feau, Nicolas, Ju, Yu-Ming (2026): Dual life history of Biscogniauxia barriae sp. nov. (Xylariales, Graphostromataceae) as a Douglas-fir foliar endophyte and hardwood saprotroph. MycoKeys 140: 1-25, DOI: 10.3897/mycokeys.140.206138
