Micropsalliota
Introduction '''''Micropsalliota''''' is a genus of small agaric fungi in the family Agaricaceae. The genus contains about 60 species, most of which are found in tropical areas.
Taxonomy The genus was circumscribed by Austrian mycologist Franz Xaver Rudolf von Höhnel in 1914 with ''Micropsalliota pseudovolvulata'' as the type species. This species was collected in 1907 by Höhnel in the Bogor Botanical Gardens in Bogor, Indonesia. The generic name refers to the similarity of the slender fruitbodies to those in ''Psalliota'' (a genus that has since been synonymized with ''Agaricus''). Emendations were made to the genus in 1969 by Pegler and Rayner, and then in 1976 by Heinemann. Molecular phylogenetics has shown that the genus represents a monophyletic lineage in the family Agaricaceae that is sister to the genus ''Hymenagaricus''.
Description ''Micropsalliota'' fruitbodies have a ring on the stipe, free gill attachment, and brown spores. ''Micropsalliota'' is distinguished from similar genera with dark spore prints by its small- to medium-sized fruit bodies, ellipsoid to cymbiform (boat-shaped) basidiospores with an apical thickening in the endosporium, cheilocystidia that are often capitate (ending in a distinct compact head) or nearly so, and pileipellis hyphae encrusted with a pigment that turns olive to green after application of NH4OH.
Ecology and distribution About 40 ''Micropsalliota'' species have been described by Belgian mycologist Paul Heinemann and colleagues from the tropics of Africa, America, India, Indonesia, and Malaysia. Eleven new species from Thailand were added in 2010. ''Micropsalliota pseudoglobocystis'' is the first species of the genus reported from China. A new species ''Micropsalliota albofelina'' was described in 2021, it is also the first record of this genus in Vietnam.
Species , Index Fungorum accepts 70 species of ''Micropsalliota'':*''M. alba'' Heinem. & Little Flower 1983 – Kerala*''M. albella'' M.Q. He & R.L. Zhao 2020 – Thailand*''M. albofelina'' D.D. Ivanova & O.V. Morozova 2021 – Vietnam*''M. albonuda'' (Beeli) Heinem. 1988 – Kerala*''M. albosericea'' Heinem. & Leelav. 1991*''M. allantoidea'' R.L.Zhao, Desjardin, Soytong & K.D.Hyde 2010 – Thailand*''M. arginea'' (Berk. & Broome) Pegler & R.W.Rayner 1969*''M. arginophaea'' Heinem. 1980 – Peninsular Malaysia*''M. atropurpurea'' Heinem. 1988 – Zaire*''M. avellanea'' Heinem. & Little Flower 1983 – Kerala*''M. bambusicola'' (Heinem.) Heinem. 1988*''M. bifida'' R.L.Zhao, Desjardin, Soytong & K.D.Hyde 2010 – Thailand*''M. bogoriensis'' Heinem. 1983 – Java*''M. brunneola'' Heinem. 1980 – Peninsular Malaysia*''M. brunneosperma'' (Singer) Pegler 1969*''M. brunneosquamata'' Linda J. Chen, R.L. Zhao & K.D. Hyde 2016 – Thailand*''M. campestroides'' (Heinem. & Gooss.-Font.) Heinem. 1988*''M. cardinalis'' Heinem. 1989 – Argentina*''M. cephalocystis'' (Heinem.) Heinem. 1977*''M. cinnamomeopallida'' Singer 1982 – Costa Rica*''M. cornuta'' Har. Takah. & Taneyama 2016 – Japan*''M. cortinata'' (Heinem.) Heinem. 1988*''M. cymbispora'' Heinem. & Little Flower 1983 – Kerala*''M. cystidiosa'' Natarajan & Manjula 1982 – Tamil Nadu*''M. delicatula'' R.L. Zhao, J.X. Li & M.Q. He 2021 – China*''M. dentatomarginata'' R.L. Zhao, J.X. Li & M.Q. He 2021 – China*''M. digitatocystis'' R.L. Zhao, J.X. Li & M.Q. He 2021 – China*''M. elata'' Heinem. 1988 – Senegal*''M. endophaea'' Heinem. 1988 – Senegal*''M. erythrospila'' (Berk. & Broome) Pegler 1986*''M. furfuracea'' R.L. Zhao, Desjardin, Soytong & K.D. Hyde 2010 – Thailand*''M. geesterani'' (Bas & Heinem.) R.L. Zhao & L.A. Parra 2015 – Netherlands*''M. globocystis'' Heinem. 1980 – Singapore*''M. gracilis'' Heinem. 1980 – Singapore*''M. heinemaniana'' Guzm.-Dáv. 1992 – Mexico*''M. heterocystis'' Heinem. 1988 – Zaire*''M. ianthina'' Heinem. 1980 – Singapore*''M. laeta'' Heinem. 1980 – Singapore*''M. lateritia'' Heinem. 1980 – Singapore*''M. luteotacta'' Heinem. 1988 – Zaire*''M. lutescens'' Heinem. 1980 – Singapore*''M. malabarensis'' Heinem. & Little Flower 1983 – Kerala*''M. megarubescens'' R.L.Zhao, Desjardin, Soytong & K.D.Hyde 2010 – Thailand*''M. megaspora'' R.L.Zhao, Desjardin, Soytong & K.D.Hyde 2010 – Thailand*''M. ochracea'' Heinem. 1980 – Singapore*''M. pholiotinoides'' Heinem. 1983 – Zaire*''M. pilicystis'' Heinem. 1980 – Singapore*''M. pleurocystidiata'' Heinem. & Little Flower 1983 – Kerala*''M. plumaria'' (Berk. & Broome) Höhn. 1914*''M. pruinosa'' Heinem. 1989 – Rio de Janeiro*''M. pseudoarginea'' Heinem. 1982 – Papua New Guinea*''M. pseudoglobocystis'' Li Wei & R.L. Zhao 2015 – China*''M. pseudovolvulata'' Höhn. 1914*''M. pudica'' Heinem. & Leelav. 1991 – Kerala*''M. pulverulenta'' Heinem. & Leelav. 1991 – Kerala*''M. purpurea'' Singer 1977 – Ecuador*''M. purpureobrunneola'' M.Q. He & R.L. Zhao 2020 – Thailand*''M. pusillissima'' R.L.Zhao, Desjardin, Soytong & K.D.Hyde 2010 – Thailand*''M. repanda'' Heinem. 1980 – Singapore*''M. roseipes'' Heinem. 1980 – Peninsular Malaysia*''M. roseovinaceus'' Pegler 1982 – Martinique*''M. rubrobrunnescens'' R.L.Zhao, Desjardin, Soytong & K.D.Hyde 2010 – Thailand*''M. subalba'' Heinem. & Little Flower 1983 – Kerala*''M. subalpina'' Guzm.-Dáv. & Heinem. 1994 – Mexico*''M. subarginea'' Heinem. 1980 – Singapore*''M. suthepensis'' R.L.Zhao, Desjardin, Soytong & K.D. Hyde 2010 – Thailand*''M. ventricocystidiata'' Al-Sadi & S. Hussain 2022 – Oman*''M. vinaceoumbrina'' (A.H.Sm.) Heinem. 1977 – Texas*''M. violaceosquamulosa'' (R.E.D.Baker & W.T.Dale) Heinem. 1980 – Trinidad-Tobago*''M. xanthorubescens'' Heinem. 1980 – Singapore
See also *List of Agaricales genera*List of Agaricaceae genera
References