Helotiales » Lachnaceae » Erioscyphella

Erioscyphella brasiliensis

Erioscyphella brasiliensis (Mont.) Baral, Šandová & B. Perić
= Lachnum brasiliense (Mont.) J.H. Haines & Dumont
Facesoffungi number: FoF 05909; Fig. 40
Saprobic on dead stems. Sexual morph: Apothecia 0.8–1 × 0.5–0.7 mm, arising singly or in small groups, stipitate. Disc yellow, concave and smooth. Receptacle cupulate, concolorous, clothed with whitish or pale yellow hairs. Stipe cylindric, clothed with hairs. Hairs 32.3–40.1 × 2.5–3.2 µm (x = 35.4 × 2.8 µm, n = 20), cylindric, septate, walls usually thin, surface finely granulate. Ectal excipulum 58–67 µm (x = 62.6 µm, n = 10), composed of thin-walled, hyaline cells of textura prismatica. Medullary excipulum 57–72 µm (x = 62 µm, n = 10), composed of narrow, thinwalled, hyaline cells of textura intricata. Hymenium hyaline. Paraphyses 1.5–2.5 µm wide (x = 2 µm, n = 20), numerous, filiform, acute at the apex, non-septate. Asci 80–100 × 6–9.5 µm (x = 89.8 × 7.1 µm, n = 30), 8-spored, cylindric-clavate, unitunicate, tapered, conical at the apex, amyloid, stipitate base, croziers absent. Ascospores 20–35 × 2–3 µm (x = 29 × 2.8 µm, n = 40), hyaline, narrowly fusoid, aseptate, lying in two or three overlapping series within the ascus. Asexual
morph: Undetermined.
Material examined – Thailand, Chiang Rai Province, Doi Mae Salon, 12 March 2015, A. H. Ekanayaka, HD015, HD053 (MFLU 16-0577). GenBank accessions – LSU- MK591993, ITS- MK584967, SSU- MK585040
Notes – Our strains HD015 and HD053 collected from Thailand are clustured with Erioscyphella brasiliensis group and the clade received high statistical support of 99% (Fig. 35). Our strain shows close genetic relationship with E. brasiliensis collections from Europe (PR129) and China (HMAS 78490) (Fig. 35) and the relationship supported with moderate statistical support f 67% (MLBP). The ITS data of our collection shows similarity to Lachnum brasiliense (strain 3384) (525/527-99% with no gaps) and the LSU region shows similar to Erioscyphella curvispora (strain KL381) (790/805-98% with no gaps) and to Lachnum abnorme (KUS-F52080) (930/959-97% with 5 gaps). Erioscyphella brasiliensis is characterized by yellow, cupulate apothecia covered with cylindrical, white hairs with finely granulate walls, filiform paraphyses with acute apices, amyloid asci arising from croziers and fusoid ascospores. Our collection is similar to the descriptions given by Spooner (1987) and Montagne (1856).

Figure 40 – Morphology of Erioscyphella brasiliense (MFLU 16-0577) a Substrate. b Apothecia on wood. c Close up of apothecium on wood. d Cross section of an apothecium. e Close up of a Vertical section of the apothecium at flanks. f Septate hairs. g Filiform paraphyses. h–j Cylindric asci. k Amyloid ring at the ascus apex. l–o Narrowly fusoid ascospores. Scale bars: a = 1000 µm, b = 500 µm, c = 200 µm, d = 500 µm, e = 100 µm, f = 30 µm, g = 100 µm, h-j = 45 µm, k = 20 µm, l-o = 15 µm

 

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