Fungalpedia – Note 942, Leucoagaricus

 

Leucoagaricus. Locq.

Citation when using this data Manawasinghe IS et al. 2022 – Fungalpedia, Basidiomycota.

Index Fungorum, Facesoffungi, MycoBank, GenBank., Fig 1

Classification: Agaricaceae, Agaricales, Agaricomycetidae, Agaricomycetes, Agaricomycotina, Basidiomycota, Fungi

Leucoagaricus have 135 estimated species, and the type species is Leucoagaricus rubrotinctus (He et al. 2019). Species of Leucoagaricus are terrestrial and saprotrophic, and species are distributed in both tropical and temperate regions (Kirk et al. 2008). Several new species have been described from Asia, such as India (Kumar & Manimohan 2009), China (Liang et al. 2010, Ge et al. 2015, Yang & Ge 2017, Yuan et al. 2014, Yu et al. 2016), Pakistan (Hussain et al. 2018, Qasim et al. 2015), and Laos (Sysouphanthong et al 2018). In this paper, we introduce two new Leucoagaricus species from Laos and Thailand. In the phylogenetic analysis, Lepiota flammeotincta, Lep. fuliginescens and Lep. decorata are placed in the Leucoagaricus. Vellinga (2004) indicated that Leucoagaricus and Leucocoprinus are in the Leucoagaricus/Leucocoprinus clade. Furthermore, Vellinga (2006, 2010) studied on type specimens of Lep. flammeotincta, Lep. fuliginescens and Lep. decorate and mentioned these taxa fit to Leucoagaricus than Lepiota because of their absence of clamp-connections. This is further confirmed in molecular phylogenetic analysis as them to be in Leucoagaricus/Leucocoprinus clade. Thus, we recommend that Lepiota flammeotincta, Lepiota fuliginescens and Lepiota decorata should be moved to genus Leucoagaricus. 

Type species: Leucoagaricus rubrotinctus (Peck) Singer 1948 (Designated by Redhead, Index Fungorum 315: 1. 2016).

Other accepted species: Species Fungorum – search Leucoagaricus.

 

 

Figure 1 – Leucoagaricus croceus (MFLU19-1331, holotype). a–c Basidiomata. d Basidiospores.

 

References

Ge ZW, Yang ZL, Qasim T, Nawaz R et al. 2015 – Four new species in Leucoagaricus (Agaricaceae, Basidiomycota) from Asia. Mycologia 107, 1033–1044.

He MQ, Zhao RL, Hyde KD, Begerow D et al. 2019 – Notes, outline and divergence times of Basidiomycota. Fungal Diversity 99, 105–367.

Hussain S, Jabeen S, Khalid AN, Ahmad H et al. 2018 – Underexplored regions of Pakistan yield five new species of Leucoagaricus. Mycologia 110, 387–400.

Kirk PM, Cannon P, Minter D, Stalpers J. 2008 – Ainsworth & Bisby’s dictionary of the fungi, 10th edn. CAB International, Wallingford, UK.

Kumar TKA, Manimohan P. 2009 – The genera Leucoagaricus and Leucocoprinus (Agaricales, Basidiomycota) in Kerala State, India. Mycotaxon 108, 385–428.

Liang JF, Yang ZL, Xu JP, Ge ZW. 2010 – Two new unusual Leucoagaricus species (Agaricaceae) from tropical China with blue-green staining reactions. Mycologia 102, 1141–1152.

Qasim T, Amir T, Nawaz R, Niazi A et al. 2015 – Leucoagaricus lahorensis, a new species of L. sect. Rubrotincti. Mycotaxon 130, 533–541.

Sysouphanthong P, Bouamanivong S, Salichanh T, Xaybouangeun N et al. 2018 – Leucoagaricus houaynhangensis (Agaricaceae), A new yellowish-green species from Lao People’s Democratic Republic. Chiang Mai Journal of Science 45, 1287–1295.

Vellinga EC. 2004 – Genera in the family Agaricaceae – Evidence from nrITS and nrLSU sequences. Mycological Research 108, 354–377.

Vellinga EC. 2006 – Lepiotaceous fungi in California, U.S.A. – 3. Pink and lilac species in Leucoagaricus sect. Piloselli. Mycotaxon 98, 213–224.

Vellinga EC. 2010 – Lepiotaceous fungi in California, U.S.A. Leucoagaricus sect. Piloselli. Mycotaxon 112, 393–444. 

Yang ZL, Ge ZW. 2017 – Six new combinations of lepiotaceous fungi from China. Mycosystema 36, 542–551.

Yu F, Liang JF, Ge ZW, Li YK. 2016 – Morphological and molecular evidence for a new species of Leucoagaricus from China. Sydowia 68, 41–47.

 

Entry by

Ishara Sandeepani Manawasinghe, Innovative Institute for Plant Health, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, PR of China

 

Published online 3 October 2025

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