Rosellinia qiongensis 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 qiongensis

description: <i>Rosellinia qiongensis</i> S.H. Long &amp; Q.R. Li <i>sp. nov.</i> (Fig. 3) MycoBank No: MB 842285 <b>Holotype:</b> — CHINA, Hainan Province, Qiongzhong County (19°7′8.60″N, 109°7′8.60″E), elev. 177 m, on dead branch of bamboo, 13 November 2020, S.H. Long and Lili Liu QZ 100-1 (GMB0082, holotype; ex-type GMBC0082); <i>ibid</i> (KUN-HKAS 122640, isotype). Saprobic on a dead branch of bamboo. <b>Sexual morph</b> <i>Subiculum</i> felted cream-colored to light brown, restricted to rim around stromata, persistent. <i>Stromata</i> 560–725 µm high × 525–635 µm diam. (av. = 639 × 582 µm, n = 20), superficial, scattered to gregarious, solitary, globose, with a conical pointed top, dark brown to black, shiny, carbonaceous. <i>Ostioles</i> black, finely to coarsely papillate. <i>Ectostroma</i> 60–80 µm thick, black, carbonaceous. <i>Entostroma</i> black, confined to base. <i>Perithecia</i> not collapsed in the stroma cavity. <i>Asci</i> 108.5–141.5 × 11–24 µm (av. = 126 × 15.5 µm, n = 30) 8-spored, unitunicate, cylindrical, short pedicellate, apically rounded, with a long barrel-shaped, apically flattened, basally attenuated or not, J + apical apparatus in Melzer’s reagent, 6.0–6.8 µm high, 6.6–9.9 µm wide. <i>Ascospores</i> 24.5–31 × 5–8 µm (av. = 27.2 × 6.4 µm, n = 30), biseriate, fusiform, ends rounded, hyaline when immature, slight brown to brown at maturity, straight to curved, with three, 3–9 µm, straight germ slits, without slimy sheathes or 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 the edge, medium dense, white from above, reverse sides were white at the margin, flesh to pale brown at centre, no pigmentation were produced on PDA medium, no conidia were observed on PDA or OA media. <b>Habitat/Distribution:</b> —Known to inhabit dead wood, Hainan Province, China. <b>Etymology:</b> —Refers to Qiong, the abbreviation of Hainan province, where the type specimen was collected. <b>Other material examined:</b> — CHINA, Hainan Province, Qiongzhong County (19°7′8.10″N, 109°52′21.36″E), altitude: 177 m, dead branch of bamboo, 13 November 2020, S.H. Long, QZ180 (GMB0083, <b>paratype</b>, ex-paratype GMBC0083). <b>Additional sequences:</b> —GMB0082 (LSU: OM001205); GMB0083 (LSU: OM001206). <b>Notes:</b> —Our new strains of <i>Rosellinia qiongensis</i> accommodate as the sister clade to <i>R. pervariabilis</i> Q.R. Li &amp; J.C. Kang in the phylogenetic tree with high statistical supports (100/0.99) (Fig. 1). Their ascospores are similar in shape and both are light brown in color, but <i>R. qiongensis</i> had three germ slits on ascospores while <i>R. pervariabilis</i> are lacking them. Moreover, the size of ascospores of <i>R. qiongensis</i> is larger than that of <i>R. pervariabilis</i> (24.5–31× 5–8 µm vs. 19.5–24.5 × 4–5 µm) (Xie <i>et al</i>. 2019). <i>Rosellinia qiongensis</i> belongs to <i>Rosellinia emergens</i> group and it is also reminiscent of <i>R. dolichospora</i> Syd. &amp; P. Syd. and <i>R. patilii</i> L.E. Petrini, which has fusiform, brown ascospores with three short germ slits (Petrini 2013). However, <i>R. qiongensis</i> differs from <i>R. dolichospora</i> and <i>R. patilii</i> by its smaller ascospores (24.5–31 × 5–8 µm in <i>R. qiongensis</i>, 29–33 × 6.3– 7.7 µm in <i>R. dolichospora</i>, and 38.6–45.4 × 7.2– 9.8 µm in <i>R. patilii</i>) (Petrini 2013).
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 293-295, 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."]}