Roussoella intermedia Y.M. Ju, J.D. Rogers & Huhndorf, Mycotaxon

Liu, Jian-Kui, Phookamsak, Rungtiwa, Dai, Dong-Qin, Tanaka, Kazuaki, Jones, Gareth, Xu, Jian-Chu, Chukeatirote, Ekachai & Hyde, Kevin D., 2014, Roussoellaceae, a new pleosporalean family to accommodate the genera Neoroussoella gen. nov., Roussoella and Roussoellopsis, Phytotaxa 181 (1), pp. 1-33 : 13-14

publication ID

https://doi.org/ 10.11646/phytotaxa.181.1.1

persistent identifier

https://treatment.plazi.org/id/223F0302-FF91-9930-DAE3-33DAFCEFFD75

treatment provided by

Felipe

scientific name

Roussoella intermedia Y.M. Ju, J.D. Rogers & Huhndorf, Mycotaxon
status

 

Roussoella intermedia Y.M. Ju, J.D. Rogers & Huhndorf, Mycotaxon View in CoL 58: 447. 1996. FIG. 6 View FIGURE

Saprobic on decaying bamboo culms. Ascostromata 0.8–1.6 mm wide, 1.7–4.9 mm long, immersed under a clypeus, raised, visible, black, dome-shape areas on host surface, uni-biloculate. Locules 280–400 µm high, 450–630 µm diam, subglobose to lenticularis with a flattened base, solitary to clustered, black, centrally ostiolate. Beak short papillate, 75–95 µm high, 60–80 µm wide. Peridium 17–25 µm thick at sides, composed of polygonal flattened cells (5–12.5 × 1.5–5 µm), surrounded by wedge-shaped stromatic region (350–600 µm wide at sides) composed of rectangular to subglobose cells (5–20 × 2–15 µm). Hamathecium comprising 1–2 µm wide, numerous, anastomosing cellular pseudoparaphyses, branching, rough-walled, and embedded in a gelatinous matrix. Asci (86–)92–117(–130) × 6–8 µm (x = 104.5 × 6.5 µm, n = 20), 8−spored, bitunicate, cylindrical, short pedicellate(12.5–29 µm long). Ascospores 12–18 × 4–5 µm (x = 14.8 × 4.5, n = 50), uni-seriate, fusiform to cylindrical, with a median septum, 2-celled, brown, with irregular longitudinal striations. Asexual morph did not form in culture.

Specimen examined. JAPAN, Hokkaido, Isl. Rishiri, Oniwaki mountain trail, on twigs of Sasa kurilensis , 29 July 2007, K . Tanaka & G . Sato, KT 2303 (= HHUF 30025 About HHUF ), living culture NBRC 106245 View Materials .

Notes: Roussoella intermedia is similar to R. pustulans , but differ in having larger asci and ascospores (asci 92–117 × 6–8 vs. 68–83 × 6.5–8.5 µm; ascospores 12–18 × 4–5 vs. 10–16 ×4–5 µm). The combined sequences phylogenetic tree (FIG. 1) indicates that these two species could be probably the same fungus. However, the ITS sequences analysis confirms that they are phylogenetically distinct species (FIG. 2).

K

Royal Botanic Gardens

G

Conservatoire et Jardin botaniques de la Ville de Genève

Kingdom

Fungi

Phylum

Ascomycota

Class

Dothideomycetes

Order

Pleosporales

Family

Roussoellaceae

Genus

Roussoella

Loc

Roussoella intermedia Y.M. Ju, J.D. Rogers & Huhndorf, Mycotaxon

Liu, Jian-Kui, Phookamsak, Rungtiwa, Dai, Dong-Qin, Tanaka, Kazuaki, Jones, Gareth, Xu, Jian-Chu, Chukeatirote, Ekachai & Hyde, Kevin D. 2014
2014
Loc

Roussoella intermedia Y.M. Ju, J.D. Rogers & Huhndorf, Mycotaxon

Y. M. Ju, J. D. Rogers & Huhndorf 1996: 447
1996
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