Rosellinia verticillata S. H. Long &amp; Q. R. Li 2022, sp. nov.
Creators: name: Long, Sihan
name: Pi, Yinhui
name: Wu, Youpeng
name: Liu, Lili
name: Zhang, Xu
name: Long, Qingde
name: Lin, Yan
name: Kang, Yingqian
name: Kang, Jichuan
name: Wijayawardene, Nalin N.
name: Li, Qirui
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Fungi
Ascomycota
Sordariomycetes
Xylariales
Xylariaceae
Rosellinia
Rosellinia verticillata

description: <i>Rosellinia verticillata</i> S.H. Long &amp; Q.R. Li <i>sp. nov.</i> (Fig. 4) MycoBank No: MB 842287 <b>Holotype:</b> — CHINA, Guizhou Province, Tongren, Fanjingshan Nature Reserve (27°53′44.77″N, 108°43′52.69″E), elev. 989 m, dead branch of <i>Litsea verticillata</i> Hance, 14 October 2020, S. H. Long and Lili Liu FJS19 (GMB0084, holotype, ex-type GMBC0084; KUN-HKAS 122639, isotype). <i>Saprobic</i> on dead twig of <i>L. verticillata</i>. <b>Sexual morph</b> <i>Subiculum</i> felted, brown, restricted to rim around stromata, evanescent. <i>Stromata</i> 630–735 µm high × 525–700 µm diam. (av. = 679 × 628 µm, n = 20), superficial, scattered to gregarious, solitary, globose, with a conical pointed top, dark, shiny, carbonaceous. <i>Ostioles</i> black, papillate. <i>Ectostroma</i> 80–100 µm thick, black, carbonaceous. <i>Entostroma</i> disappearing at maturity. <i>Perithecia</i> filling entirely the stroma cavity or partly collapsed. <i>Asci</i> 173. 5–241.5 × 18.5–39 µm (av. = 212.5 × 30 µm, n = 30), 8-spored, unitunicate, cylindrical, short pedicellate, apically rounded, with a long J+, barrel-shaped apical apparatus in Melzer’s reagent, 11.5–15.5 µm high, 7–8 µm wide. <i>Ascospores</i> 42–62 × 6.5–12 µm (av. = 55 × 9.3 µm, n = 30), overlapping uniseriate or biseriate, fusiform, ends rounded, hyaline when immature, slight brown to brown at maturity, straight to curved, with a germ slit running the entire length of the spores, entirely surrounded by a thin slimy sheath visible in water and in black ink, lacking appendages. <b>Asexual morph</b> Undetermined. <b>Culture characteristics:</b> —Ascospores germinated on PDA within 24 hours. Colonies on PDA were white when young, became pale brown, dense, but thinning towards edge, medium dense, white from above, reverse side white at margin, flesh to pale brown at centre. No pigmentation was produced on PDA medium. No conidia were observed on PDA or OA media. <b>Habitat/Distribution:</b> —Known to inhabit dead wood, Guizhou Province, China. <b>Etymology:</b> —Refers to its host species, <i>L. verticillata</i> <b>Other material examined:</b> — CHINA, Guizhou Province, Ya Mu Gou Scenic Area (27°54′42.83″N, 108°42′9.08″E), altitude: 1058 m, dead branch of unidentified plant, 15 October 2020, S. H. Long, FJS45 (GMB0085, KUN-HKAS 122641, living culture GMBC0085). <b>Additional sequences:</b> —GMB0084 (LSU: OM001207) GMB0085 (LSU: OM001208). <b>Note:</b> —In the phylogenetic tree (Fig. 1), <i>R. verticillata</i> clustered together with <i>R. tetrastigmae</i> Q.R. Li &amp; J.C. Kang. However, the ascospores of <i>R. verticillata</i> are smaller than those of <i>R. tetrastigmae</i> (42.0–62.0 × 6.7–12.0 µm vs. 72.5–111.5 × 12.5–19.5 µm), and <i>Rosellinia verticillata</i> (GMB0082) ascospores are completely surrounded by a thin slimy sheath, but the <i>R. tetrastigmae</i> only has the slime at the ends (Xie <i>et al</i>. 2019). Moreover, stromata of <i>R. verticillata</i> are larger than those of <i>R. tetrastigmae</i> (630–735 µm high × 525–700 µm diam. vs. 300–500 mm high × 400–600 mm diam.). And <i>R. verticillata</i> belongs to <i>R. emergens</i> group (Petrini 2013) but it is different from the species which have whole spore length germ silt in this group for <i>R. verticillata</i> ascospores are completely surrounded by a thin slimy sheath.
description: Published as part of <i>Long, Sihan, Pi, Yinhui, Wu, Youpeng, Liu, Lili, Zhang, Xu, Long, Qingde, Lin, Yan, Kang, Yingqian, Kang, Jichuan, Wijayawardene, Nalin N. &amp; Li, Qirui, 2022, Rosellinia qiongensis sp. nov., R. verticillata sp. nov. and a new record of R. lamprostoma from China, pp. 287-300 in Phytotaxa 552 (5)</i> on pages 295-297, DOI: 10.11646/phytotaxa.552.5.2, http://zenodo.org/record/6796573
description: {"references": ["Xie, X., Liu, L., Zhang, X., Long, Q., Shen, X., Boonmee, S., Kang, J. C. &amp; Li, Q. R. (2019) Contributions to species of Xylariales in china - 2. Rosellinia pervariabilis and R. tetrastigmae spp. nov. and a new record of R. caudata. Mycotaxon 134: 183 - 196. https: // doi. org / 10.5248 / 134.183", "Petrini, L. E. (2013) Rosellinia: a world monograph. Bibliotheca Mycologica, J. Cramer: Stuttgart, 410 pp."]}