Leucocoprinus straminellus is a species of mushroom producing fungus in the family Agaricaceae. Like other Leucocoprinus species it may have originated in a tropical climate but now finds a home in plant pots, greenhouses and compost piles in many countries. Leucocoprinus straminellus is described as being similar to the more commonly known Leucocoprinus birnbaumii but it is smaller and a lighter shade of yellow with smaller spores that lack a germ pore.[2] It is also described as being superficially similar to Leucocoprinus fragilissimus but slightly more robust with flesh that is less translucent.
In 1887 the Italian mycologist Pier Andrea Saccardo classified it as Lepiota straminella.[4]
It was reclassified as Leucocoprinus straminellus by the Italian mycologists Roberto Narducci and Vincenzo Caroti in 1995.[5] However it is still sometimes referred to by its former name Leucocoprinus denudatus[6] which it acquired in 1951 when classified by the German mycologist Rolf Singer.
In 1999 the variant Leucocoprinus straminellus var. albus was described by the mycologists Vincenzo Migliozzi & Marcello Rava.[7] This is now considered a synonym.
Descriptionedit
Leucocoprinus straminellus is a small dapperling mushroom with thin whitish to pale yellow flesh.
Cap: 1.5-2.5 cm wide, ovoid to campanulate (bell shaped) maturing to convex or almost flat with age but retaining the umbo. The surface is whitish yellow with a darker yellow centre and the margins are striated. Stem: 2.4–5 cm tall tapering upwards from a swollen base. The stem ring is located towards the top of the stem (median-superior) but quickly disappears. Gills: Free with a collar, distant and white-cream. Spore print: White. Spores: Ellipsoid to spherical and smooth. Dextrinoid. 5-6 x 4-4.5 μm. Taste: Indistinct. Smell: Indistinct.[8]
The description of Leucocoprinus denudatus[9] (now considered a synonym) from 1981 includes the following details:
Cap: 1.6-2.4 cm wide. Ovoid to campanulate or hemispheric and expanding with age to become convex or flat. Pale greenish-yellow in colour with the centre presenting with a deeper colour. The cap edges are paler and have striations. The centre of the cap is velvety in texture whilst the rest of the cap is covered in a fine powdery substance (pruinose) when examined under a lens. Gills: Crowded and free, tinted pale yellow or the same colour as the cap. Stem: 1.5-4.5 cm long and 2-3mm thick at the top, 4-6mm at the base. Paler yellow than the cap with a small, membranous stem ring that is high up (superior). The stem texture is smooth or very finely pruinose when examined with a lens and the base is often covered with soil. Spores: Globose to subglobose to broadly ovoid, with a minute apiculus, lacking a germ pore. 3.6-4.5 x (3.6) 4-4.8 μm and rarely up to 6-8 x 5.2μm. Pale yellow to rust yellow in Melzer's reagent. Basidia: 24-36 x 5-8μm, narrowly clavate to nearly cylindrical.[10]
Dried specimens present with a brown umbo whilst the rest of the cap is yellow however dry immature specimens may develop brownish tones on the rest of the cap.[10]
Due to the similarities with Leucocoprinus flavescens these species may often be confused resulting in inconsistencies in descriptions.
Habitat and distributionedit
Specimens studied in 1981 where found in June at the University of Michigan Botanical Garden. They were growing in dense clusters. This was the first observation of the species in North America but it is more commonly found in Europe.[10]
Similar speciesedit
Leucocoprinus flavescens is described similarly with some sources suggesting they may be synonymous although they appear to have different sized spores and different coloured cap centres.[11]
Referencesedit
^"GSD Species Synonymy: Leucocoprinus straminellus (Bagl.) Narducci & Caroti". Species Fungorum. CAB International. Retrieved 2022-07-06.
^Dutta, Arun Kumar; Stallman, Jeffery Kirk; Bera, Soumili; Hoque, Enjamul; Paloi, Soumitra; Acharya, Krishnendu (April 2021). "Lepiotaceous fungi of West Bengal, India: two new species of Leucoagaricus". Mycological Progress. 20 (4): 493–507. doi:10.1007/s11557-021-01685-w. ISSN 1617-416X.
^Saccardo, P. A.; Traverso, G. B.; Trotter, A. (1887). Sylloge fungorum omnium hucusque cognitorum. Vol. 5. Patavii: sumptibus auctoris. p. 44.
^Narducci, R.; Caroti, V. (1995-11-23). "Leucocoprinus Straminellus (Basidiomycotina, Lepiotaceae), nome nuovo per Leucocoprinus Denudatus" (PDF). Atti della Società Toscana di Scienze Naturali - Memorie Serie B. 102: 49–50.
^"Kuo, M. (2015, August). Leucocoprinus flavescens. Retrieved from the MushroomExpert.Com". www.mushroomexpert.com. Retrieved 2022-07-06.
^Migliozzi, Vincenzo; Rava, Marcello (1999). "Due interessanti Leucocoprinus bianchi.Leucocoprines medioflavus var. niveus var.nov. e Leucocoprinus straminellus var. albus comb. nov". Micologia e vegetazione Mediterranea. pp. 23–32.
^ abcSmith, Helen V. (1981). "Some Species of Leucocoprinus which Grow in Greenhouses". Michigan botanist. National Agricultural Library U. S. Department of Agriculture. Ann Arbor : Michigan Botanical Club. p. 49.
^Kuo, M. (August 2015). "Leucocoprinus flavescens (MushroomExpert.Com)". www.mushroomexpert.com. Retrieved 2022-10-12.
April 12, 2024
leucocoprinus, straminellus, species, mushroom, producing, fungus, family, agaricaceae, like, other, leucocoprinus, species, have, originated, tropical, climate, finds, home, plant, pots, greenhouses, compost, piles, many, countries, described, being, similar,. Leucocoprinus straminellus is a species of mushroom producing fungus in the family Agaricaceae Like other Leucocoprinus species it may have originated in a tropical climate but now finds a home in plant pots greenhouses and compost piles in many countries Leucocoprinus straminellus is described as being similar to the more commonly known Leucocoprinus birnbaumii but it is smaller and a lighter shade of yellow with smaller spores that lack a germ pore 2 It is also described as being superficially similar to Leucocoprinus fragilissimus but slightly more robust with flesh that is less translucent Leucocoprinus straminellusScientific classificationDomain EukaryotaKingdom FungiDivision BasidiomycotaClass AgaricomycetesOrder AgaricalesFamily AgaricaceaeGenus LeucocoprinusSpecies L straminellusBinomial nameLeucocoprinus straminellus Bagl Narducci amp Caroti 1995 Synonyms 1 Agaricus straminellus Bagl 1865 Lepiota straminella Sacc 1887 Mastocephalus straminellus Kuntze 1891 Lepiota cepistipes var straminella Konrad amp Maubl 1924 Agaricus denudatus Rabenh 1867 Lepiota denudata Sacc 1887 Mastocephalus denutatus Kuntze 1891 Leucocoprinus denudatus Singer 1951 Hiatula denudata Singer 1951 Lepiota boudieri Gueg 1908 Lepiota gueguenii Sacc amp Traverso 1910 Leucocoprinus gueguenii Locq 1943 Leucocoprinus straminellusMycological characteristicsGills on hymeniumCap is campanulate or ovateHymenium is freeStipe has a ringSpore print is whiteEcology is saprotrophicEdibility is unknown Contents 1 Taxonomy 2 Description 3 Habitat and distribution 4 Similar species 5 ReferencesTaxonomy editIt was first described in 1865 by the Italian botanist Francesco Baglietto who classified it as Agaricus straminellus 3 In 1887 the Italian mycologist Pier Andrea Saccardo classified it as Lepiota straminella 4 It was reclassified as Leucocoprinus straminellus by the Italian mycologists Roberto Narducci and Vincenzo Caroti in 1995 5 However it is still sometimes referred to by its former name Leucocoprinus denudatus 6 which it acquired in 1951 when classified by the German mycologist Rolf Singer In 1999 the variant Leucocoprinus straminellus var albus was described by the mycologists Vincenzo Migliozzi amp Marcello Rava 7 This is now considered a synonym Description editLeucocoprinus straminellus is a small dapperling mushroom with thin whitish to pale yellow flesh Cap 1 5 2 5 cm wide ovoid to campanulate bell shaped maturing to convex or almost flat with age but retaining the umbo The surface is whitish yellow with a darker yellow centre and the margins are striated Stem 2 4 5 cm tall tapering upwards from a swollen base The stem ring is located towards the top of the stem median superior but quickly disappears Gills Free with a collar distant and white cream Spore print White Spores Ellipsoid to spherical and smooth Dextrinoid 5 6 x 4 4 5 mm Taste Indistinct Smell Indistinct 8 The description of Leucocoprinus denudatus 9 now considered a synonym from 1981 includes the following details Cap 1 6 2 4 cm wide Ovoid to campanulate or hemispheric and expanding with age to become convex or flat Pale greenish yellow in colour with the centre presenting with a deeper colour The cap edges are paler and have striations The centre of the cap is velvety in texture whilst the rest of the cap is covered in a fine powdery substance pruinose when examined under a lens Gills Crowded and free tinted pale yellow or the same colour as the cap Stem 1 5 4 5 cm long and 2 3mm thick at the top 4 6mm at the base Paler yellow than the cap with a small membranous stem ring that is high up superior The stem texture is smooth or very finely pruinose when examined with a lens and the base is often covered with soil Spores Globose to subglobose to broadly ovoid with a minute apiculus lacking a germ pore 3 6 4 5 x 3 6 4 4 8 mm and rarely up to 6 8 x 5 2mm Pale yellow to rust yellow in Melzer s reagent Basidia 24 36 x 5 8mm narrowly clavate to nearly cylindrical 10 Dried specimens present with a brown umbo whilst the rest of the cap is yellow however dry immature specimens may develop brownish tones on the rest of the cap 10 Due to the similarities with Leucocoprinus flavescens these species may often be confused resulting in inconsistencies in descriptions Habitat and distribution editSpecimens studied in 1981 where found in June at the University of Michigan Botanical Garden They were growing in dense clusters This was the first observation of the species in North America but it is more commonly found in Europe 10 Similar species editLeucocoprinus flavescens is described similarly with some sources suggesting they may be synonymous although they appear to have different sized spores and different coloured cap centres 11 References edit GSD Species Synonymy Leucocoprinus straminellus Bagl Narducci amp Caroti Species Fungorum CAB International Retrieved 2022 07 06 Dutta Arun Kumar Stallman Jeffery Kirk Bera Soumili Hoque Enjamul Paloi Soumitra Acharya Krishnendu April 2021 Lepiotaceous fungi of West Bengal India two new species of Leucoagaricus Mycological Progress 20 4 493 507 doi 10 1007 s11557 021 01685 w ISSN 1617 416X Species Fungorum Agaricus straminellus Bagl Comm Soc crittog Ital 2 fasc 2 263 1865 www speciesfungorum org Retrieved 2022 07 22 Saccardo P A Traverso G B Trotter A 1887 Sylloge fungorum omnium hucusque cognitorum Vol 5 Patavii sumptibus auctoris p 44 Narducci R Caroti V 1995 11 23 Leucocoprinus Straminellus Basidiomycotina Lepiotaceae nome nuovo per Leucocoprinus Denudatus PDF Atti della Societa Toscana di Scienze Naturali Memorie Serie B 102 49 50 Kuo M 2015 August Leucocoprinus flavescens Retrieved from the MushroomExpert Com www mushroomexpert com Retrieved 2022 07 06 Migliozzi Vincenzo Rava Marcello 1999 Due interessanti Leucocoprinus bianchi Leucocoprines medioflavus var niveus var nov e Leucocoprinus straminellus var albus comb nov Micologia e vegetazione Mediterranea pp 23 32 Buczacki Stefan 2012 Collins fungi guide London Collins ISBN 978 0 00 724290 0 OCLC 793683235 Species Fungorum Leucocoprinus denudatus Sacc Singer Lilloa 22 424 1951 1949 www speciesfungorum org Retrieved 2022 07 22 a b c Smith Helen V 1981 Some Species of Leucocoprinus which Grow in Greenhouses Michigan botanist National Agricultural Library U S Department of Agriculture Ann Arbor Michigan Botanical Club p 49 Kuo M August 2015 Leucocoprinus flavescens MushroomExpert Com www mushroomexpert com Retrieved 2022 10 12 Retrieved from https en wikipedia org w index php title Leucocoprinus straminellus amp oldid 1194761593, wikipedia, wiki, book, books, library,
