Full name: Psathyrella splendens Corner (1994) ["1993"]
Published: Gardens Bulletin Singapore 45 (2): 341 (1994) ["1993"]
Taxonomic status: Heterotypic synonym of H. parvisporum
Notes: Nom. inval. Art. 40.7 - Shenzhen, no herbarium given in protologue.

Types: SINGAPORE: Pierce Reservoir (approx. 1.3712°N, 103.826°E, alt. approx. 25 m a.s.l.) on soil in tropical woodland, 9 Mar. 1930, E.J.H. Corner (Holotype. herbarium acc. no. E 00204810, HJB19597).

Homotypic synonyms: Lacrymaria splendens Voto (2019); Lacrymaria splendens S.M.L. Lee & Voto (2020)

Original diagnosis: Pileus 5-15 cm latus, convexus deln fere planus, siccus, primo badiofulvus, minute subtomentosus, dein pallide ochraceifulvus, appresse squamulosus, veil pannis fuscis vel pallidis sparsis in zonis concentricis obtectus, disco castaneo-umbrino subtomentoso. Stipes 7-18 cm x 5-18 mm ad apicem, 6-25 mm ad basim fusiformi-bulbosum, flrmus, solidus vel in aetate flstulosus, albus dein subochraceus vel brunneolus, sub annulum veil pannis subfuscis peronatus, superne albipruinosus. Annulus crassus lanneus albus, 5-12 mm sub stipitis apice. Lamellae brevlter decurrentes, raro sinuatoadnatae, confertae, 70-100 primariae 3.5-8 mm latae, ordinibus 4(-5), albae dein subincarnatae, ultimo vinacei-brunneae, acie lacrymanti. Caro 5-11 mm crassa In pile! centro, firma alba. Odor fragrans, haud fortis. Sporae 6.5-8 x5-7 μm, in cumulo alte vlnaceibrummeae, ovoideae verruculosae, verrucis 0.2-0.3 μm altis in exosporio inclusis, sine macula adaxiall. Cheilocystidia 35-70 x 7-14 μm, clavata, ut lamellae acie sterili. Pleurocystidia nulla. Superficies pilei pseudoparenchymatlca. Ad terram in silva solitaria vel gregaria. Peninsula Malayana, Borneo.

English translation: Pileus 5-15 cm broad, convex then generally applanate, dry, at first bay-fulvous, minutely subtomentose, then pale ochraceous-fulvous, appressedly squamulose, covered here and there with pale or fuscous patches of veil in concentric zones, chestnut brown subtomentose on the disc. Stipe 7-18 cm x 5-18 mm at the apex, 6-25 mm at the bulbous-fusiform base, firm, solid or fistulose with age, white then pale ochraceous or brownish, below the annulus peronate with darkish velar patches, white pruinose above. Annulus thick, woolly, white, 5-12 mm below the stipe apex. Lamellae shortly decurrent, rarely sinuate to adnate, crowded, 70-100 entire lamellae, 3.5-8 mm broad, 4 (-5) length ranks, white then pale pinkish, finally vinaceous-brown, with beaded edge. Context 5-11 mm thick in the pileus centre, firm, white. Smell fragrant, not at all strong. Spores 6.5-8 x 5-7 μm, deep vinaceous-brown in mass, ovoid, verruculose, warts 0.2-0.3 μm high enclosed in the exosporium, lacking an adaxial plage. Cheilocystidia 35-70 x 7-14 μm, clavate, hence the lamellar edge is sterile. Pleurocystidia none. The surface of the pileus is pseudoparenchymatous. Solitary or gregarious on the ground in wood. Malay Peninsula, Borneo.

Commentary: During the course of this research, and our efforts to find relevant information about Hebeloma recorded from the Malay Peninsula, we came across a paper by E.J.H. Corner (1993), effectively published 1994 (Corner 1994 [“1993”]), where he described five new Psathyrella species from the Malay Peninsula. These taxa have ornamented spores, and Corner followed Pegler and Young (1992), who also included a few species with ornamented spores in Psathyrella. Furthermore, P. splendens has a membranous persisting veil forming a conspicuous annulus, a feature excluding its position in the current circumscription of genus Psathyrella (Örstadius et al. 2015). This and two other of the new species, according to Corner (1994 [“1993”]), do not fit well within the genus. On the one hand, their robust stature might suggest they should be placed in Lacrymaria Pat. (which Voto (2019) did for all five of the Corner (1994 [“1993”]) taxa), but while the spores of Lacrymaria are black or certainly very dark in mass, at least the three collections with ornamented spores have fuscous purple or vinaceous brown spores. Also, Lacrymaria spores have a germ pore, not seen in these collections. It is now clear that these three species belong to the genus Hebeloma. Based on the spore color in fresh material, they are members of H. sect. Porphyrospora. Unfortunately, the publication of two of these species is invalid under Art. 40.7 of the International Code (Turland et al. 2018), as the published description does not specify the herbarium in which the types are conserved. It does appear that two of these three species, Psathyrella splendens and P. verrucispora, have been described and classified within Hebeloma since Corner’s publication, as H. parvisporum and H. lactariolens, originally published as Alnicola lactariolens. See Hebeloma parvisporum Sparre Pedersen, Læssøe, Beker & U. Eberh.

Full name: Lacrymaria splendens Voto (2019)
Published: Rivista Micologica Romana, Bolletino dell'Associazione Micologica Ecologica Romana 107: 95 (2019)
Taxonomic status: Heterotypic synonym of H. parvisporum
Notes: Nom. inval. Art. 40.7 - Shenzhen. This could be regarded as a replacement name for Psathyrella splendens Corner, nom. invalid. Art. 40.7, but is also invalid.

Types: SINGAPORE: Pierce Reservoir (approx. 1.3712°N, 103.826°E, alt. approx. 25 m a.s.l.) on soil in tropical woodland, 9 Mar. 1930, E.J.H. Corner (Holotype. herbarium acc. no. E 00204810, HJB19597).

Homotypic synonyms: Lacrymaria splendens S.M.L. Lee & Voto (2020)

Homotypic synonym of: Psathyrella splendens Corner (1994) ["1993"]

Commentary: This is: = Hebeloma parvisporum Sparre Pedersen, Læssøe, Beker & U. Eberh. See Psathyrella splendens Corner.

Full name: Lacrymaria splendens S.M.L. Lee & Voto (2020)
Published: Rivista Micologica Romana, Boll. AMER 110 (2): 90 (2020)
Taxonomic status: Heterotypic synonym of H. parvisporum
Notes: This could be regarded as a replacement name for Psathyrella splendens Corner and Lacrymaria splendens Voto, both noms. inval. Art. 40.7.

Types: SINGAPORE: Pierce Reservoir (approx. 1.3712°N, 103.826°E, alt. approx. 25 m a.s.l.) on soil in tropical woodland, 9 Mar. 1930, E.J.H. Corner (Holotype. herbarium acc. no. E 00204810, HJB19597).

Homotypic synonym of: Psathyrella splendens Corner (1994) ["1993"]; Lacrymaria splendens Voto (2019)

Commentary: This is: = Hebeloma parvisporum Sparre Pedersen, Læssøe, Beker & U. Eberh. See Psathyrella splendens Corner.