Bogoriella Zahlbr., Annals Cryptog. Exot. 1(2): 111 (1928).

MycoBank number: MB 608; Index Fungorum number: IF 608; Facesoffungi number: FoF 08790; 18 morphologically defined species (this paper); molecular data available for four species (Lücking et al. 2016; Zhang et al. 2017b; this paper).

= Ornatopyrenis Aptroot, Biblioth. Lichenol. 44: 127 (1991).

Type species: Ornatopyrenis queenslandica (Müll. Arg.) Aptroot [≡ Bogoriella queenslandica (Müll. Arg.) Aptroot & Lücking].

= Distothelia Aptroot in Seaward & Aptroot, Bryologist 108: 284 (2005).

Type species: Distothelia isthmospora Aptroot in Seaward & Aptroot, Bryologist 108: 284 (2005).

= Novomicrothelia Aptroot, M.P. Nelsen & Lücking in Lücking et al., Lichenologist 48: 757 (2016).

Type species: Novomicrothelia oleosa (Aptroot) Aptroot, M.P. Nelsen & Lücking in Lücking et al., Lichenologist 48: 758 (2016).

Lichenized (sometimes barely so or apparently nonlichenized) on bark in terrestrial, chiefly lowland to lower montane tropical habitats. Thallus ecorticate, mostly whitish to pale brownish. Photobiont Trentepohlia. Ascomata solitary, erumpent to prominent, brown-black to carbonaceous, hemisphaerical to wart-shaped or conical, coriaceous to carbonaceous, ostiolate, ostiole apical to rarely lateral. Involucrellum usually well-developed, carbonaceous. Excipulum prosoplectenchymatous, usually brownish, in lateral and apical parts typically fused with the involucrellum. Hamathecium comprising 1(–2) µm wide paraphysoids, hyaline, straight to somewhat wavy, branched and anastomosing, embedded in a thin, gelatinous matrix. Asci 8-spored, bitunicate, fissitunicate, (ob-)clavate to fusiform, short pedicellate, with a non-amyloid ocular chamber. Ascospores irregularly arranged to uni- or biseriate, fusiform-ellipsoid to oblong, grey-brown, 1–5-septate to small muriform, with eusepta and rectangular lumina or with thickened distosepta making the lumina appear halter-shaped, wall smooth to finely granular ornamented, not constricted at the septa or rarely with constrictions. Pycnidia known from a few species, immersed to erumpent, visible as black dots. Conidia fusiform, aseptate, bacillar, hyaline, 4–5 × 0.8 µm.

Chemistry: no substances detected by TLC.

Type species: Bogoriella subpersicina Zahlbr., Annals Cryptog. Exot. 1: 111 (1928) [= Bogoriella decipiens (Müll. Arg.) Aptroot & Lücking]. Sequence data for Bogoriella decipiens: mtSSU: MT968881.

Notes: Aptroot and Lücking (2016) adopted the name Bogoriella for more or less lichenized, tropical species previously classified in the genus Mycomicrothelia (Hawksworth 1985). The expanded molecular phylogeny now available shows that these taxa form several lineages (Fig. 77): two in a paraphyletic grade formed by the most basally diverging lineages, and three in a distant clade, forming several lineages on long branches. One of these had been named Novomicrothelia (Aptroot and Lücking 2016; Lücking et al. 2016), whereas a second clade of previously unpublished sequences includes the type species of Bogoriella, together with a new taxon, both with small muriform ascospores, one with eusepta and the other with peculiar distosepta (Fig. 79a–d). The third clade is formed by the recently described species Novomicrothelia pandanicola S.N. Zhang & K.D. Hyde (Zhang et al. 2017b). In the original analysis, nuLSU sequence data suggested a phylogenetic position of the latter close to N. oleosa, prompting inclusion in that genus. Our expanded phylogeny based on new mtSSU data showed that the genus Bogoriella, for which no data were originally available (Zhang et al. 2017b), is nested within Novomicrothelia sensu lato. Novomicrothelia pandanicola forms small, rather narrow (20–35 × 7–10 µm, about 3–3.5 times as long as broad), muriform ascospores with thin walls and septa and constrictions at the septa, whereas in the Bogoriella sensu stricto clade the ascospores are broadly ellipsoid (20–30 × 12–16 µm, about 1.5–2 times as long as broad) and muriform with either thin or conspicuously thickened walls and septa. Novomicrothelia sensu stricto has thin-walled, 1-septate ascospores without constrictions.