Full name: Agaricus repandus Schumach. (1803)
Published: Enumeratio Plantarum, in Partibus Sællandiae Septentrionalis et Orientalis Crescentium 2: 321 (1803)
Taxonomic status: We have not been able to unambiguously determine the current genus of this name.
Notes: Nom. illegit. (Art 53.1 - Melbourne), non Agaricus repandus Bull., Herb. Fr. 9: tab. 423 fig. 2 (1789): Fr., Syst. Mycol. 1: 255 (1821). Replacement name Hebeloma sinapizans var. repandum Sacc. (1887).

Types: Not designated. Described from Denmark, Birkeröd in pine forest in September.

Homotypic synonyms: Hebeloma repandum (Sacc.) Konrad & Maubl. (1937)

Homotypic synonym of: Hebeloma sinapizans var. repandum Sacc. (1887)

Original diagnosis: Agaricus repandus, solitarius, subviscosus, pileo carnoso convexo luteo-alutaceo, vertice ferrugineo, margine sulcato tuberculosis repando inciso lobato obscuriore; lamellis carne pilei aequalibus laxis repandis; longioribus arcuatim adnatis subdecurrentibus, ochraceo-cinnamomeis; stipites longo crasso utrinque subdilatato substriato albido-livido carnoso-fibroso. An idem cum Ag. subrepando Pers., Syn. Pag. 300? Ag. crustiliniformis Bull. 4. 308 quoad formam pilei. In graminosis pineti (Birkeröd). September. Caro pilei dilute ochracea, stipites alba. Pileus 3-3.5 poll. latus, 2 unc. altus. Stipes 4.5 poll. longus, 1 poll & ultra crassus.

English translation: Agaricus repandus, solitary, slightly viscid, pileus fleshy, convex, claybuff, at apex (centre) rusty brown, with grooved, warty, uneven lobed-wavy, incised, darker margin; lamellae loosened from the flesh of the pileus, wavy, long arcuate-adnate subdecurrent, ochre-cinnamom coloured; stipe long, thick, somewhat compressed, substriate, whitish lead-coloured, fleshy-fibrous. Similar to Agaricus subrepandus Pers., Syn. page 300? Similar to Agaricus crustuliniformis Bull. 4: 308 in the shape of the pileus. In grassy pine forest (Birkeröd). September. Flesh of the pileus diluted ochre; stipe white. Pileus 7.5–9 cm broad, 5 cm high. Stipe 11 cm long, about 2.5 cm and more broad.

Commentary: The name Agaricus repandus was used by Schumacher in Hornemann’s (1813) “Flora danica” with a plate (Hæfe 25, pl. 1497) and the indication that he considered it a variety of A. sinapizans. The plate shows a mushroom that is not obviously H. sinapizans. The lamellae are described as subdecurrent which would be very unusual for Hebeloma sinapizans and, indeed, for any Hebeloma. We are not able, unambiguously, to interpret this species.