Helotiales » Helotiaceae » Dicephalospora

Dicephalospora huangshanica

Dicephalospora huangshanica (W.Y. Zhuan) W.Y. Zhuang & Z.Q. Zeng
= Lanzia huangshanica W.Y. Zhuang
Facesoffungi number: FoF 05901; Fig. 32
Saprobic on dead stems. Sexual morph: Apothecia 0.5–0.8 × 0.8–1.3 mm, arising singly, stipitate. Receptacle cupulate, yellowish to cream. Disc concave, magenta or dark red. Margins concolorous to disc. Ectal excipulum 25–35 µm (x = 27.4 µm, n = 10) in lower flanks, composed of thin-walled, yellowish cells of textura prismatica with globose tips. Medullary excipulum 70–90 µm (x = 80 µm, n = 10) in lower flanks, composed of thin-walled, yellow cells of textura prismatica. Hymenium hyaline. Paraphyses 1.8–3 µm wide ( x = 2.5 µm, n = 20), numerous, filiform, obtuse and slightly swollen at the apex, aseptate, exceeding the asci in length, smooth. Asci 105–120 × 10–15 µm (x = 108 × 13 µm, n = 30) 8-spored, unitunicate, cylindric-clavate, rounded apex, amyloid, sub-stipitate base, croziers absent. Ascospores 20–25 × 4.5–5 µm (x = 23.7 × 4.6 µm, n = 40), multi-seriate, fusoid, aseptate, hyaline to yellowish, guttulate. Asexual morph: Undetermined.
Material examined – China, Yunnan Province, Honghe, 15 June 2018, Junfu Li, HC41 (MFLU 18-1828, HKAS102129). GenBank accessions – LSU- MK591979, ITS- MK584979, SSU- MK585051, TEFMK714032, RPB2- MK577782
Notes – Our new collection from China grouped with Lanzia huangshanica collections from China (HMAS 74836, HMAS 81363, HMAS 81364) and Korea (KUS F52405) (Fig. 26). The L. huangshanica clade received strong statistical support of 100%. The ITS data of our collection is identical to that of L. huangshanica (HMAS 74836) and 99% to L. huangshanica (KUS-F52405) (475/477-99% with 1 gap). The LSU data is similar to L. huangshanica (KUS-F52405) (782/783- 99% with no gaps). Dicephalospora huangshanica is characterized by cupulate stipitate apothecia with yellowish to cream receptacle and magenta disc, filiform paraphyses slightly swollen at the apex, cylindricclavate asci and fusoid ascospores (Zhuang 1995). Our new collection of D. huangshanica, collected from its type locality, phylogenetically confirmed its identification (Fig. 26). Morphological characters of our collection are in agreement with the description by (Zhuang 1995).

Figure 32 – Morphology of Dicephalospora huangshanica (MFLU 18-1828) a Substrate. b Apothecia on dead leaves. c Ectal excipular cells. d Medullary excipular cells. e Cylindric-clavate asci. f Filiform paraphyses. g Amyloid ascus apex. h–k Fusoid ascospores. Scale bars: c, d = 20 µm, e = 50 µm, f = 10 µm, h–k = 10 µm, g = 10 µm.

 

About Discomycetes

The website Discomycetes.org provides an up-to-date classification and account of genera and species of discomycetes.

Contact