Mycena pseudopicta (J .E. Lange) Kühner, una rara especie graminícola creciendo
sobre Poaceae. Mycena pseudopicta, una rara especie de la sección Cinerellae Singer ex Maas Geest.,
encontrada en España, se describe e ilustra macro y microscópicamente. Esta especie se caracteriza por sus láminas muy decurrentes, por sus queilocistidios con largas y abundantes diverticulaciones y por su
hábitat sobre gramíneas en descomposición.Mycena pseudopicta (J .E. Lange) Kühner, a rare graminicolous species growing on
Poaceae. Mycena pseudopicta, a rare species from section Cinerellae Singer ex Maas Geest., ocurring in
Spain, is described and illustrated macro- and microscopically. It is characterized by its strongly
decurrent gills, its cheilocystidia with fairly long and coarse excrescences and its graminicolous habitat

Gabriel Moreno Horcajada

Michel Heykoop Fung-A-You

Mycena pseudopicta (J .E. Lange) Kühner, a rare graminicolous species growing on
Poaceae. Mycena pseudopicta, a rare species from section Cinerellae Singer ex Maas Geest., ocurring in
Spain, is described and illustrated macro- and microscopically. It is characterized by its strongly
decurrent gills, its cheilocystidia with fairly long and coarse excrescences and its graminicolous habitat.Mycena pseudopicta (J .E. Lange) Kühner, una rara especie graminícola creciendo
sobre Poaceae. Mycena pseudopicta, una rara especie de la sección Cinerellae Singer ex Maas Geest.,
encontrada en España, se describe e ilustra macro y microscópicamente. Esta especie se caracteriza por sus láminas muy decurrentes, por sus queilocistidios con largas y abundantes diverticulaciones y por su
hábitat sobre gramíneas en descomposición

Moreno Horcajada, Gabriel

Heykoop Fung-A-You, Michel

Hemeroteca Cientifica Catalana

Revista Catalana de Micologia, vol. 24: 271-275 ; 2002. Homenatge A. Rocabruna 271Figs. 1-14MYCENA PSEUDOPICTA (J.E. LANGE) KÜHNER, A RAREGRAMINICOLOUS SPECIES GROWING ON POACEAEG. MORENO and M. HEYKOOPDept. of Plant Biology (Botany), University of Alcal à. 28871 Alcalà de Henares, Madrid (Spain).To August Rocabruna in recognition of his greatcontribution to the Catalonian MycologyABSTRACT. Mycena pseudopicta (J .E. Lange) Kühner, a rare graminicolous species growing onPoaceae. Mycena pseudopicta, a rare species from section Cinerellae Singer ex Maas Geest., ocurring inSpa in, is described and illustrated macro- and microscopically. It is characterized by its stronglydecurrent gills, its cheilocystidia with fairly long and coarse excre scence s and its graminicolous habitat.Key words: Agaricales s.I., Tricholomataceae, Mycena pseudopicta, taxonom y, Spanish mycobiot a.RESUMEN. Mycena pseudopicta (J .E. Lange) Kühner, una rara especie graminícola creciendosobre Poaceae. Mycena pseudopicta, una rara especie de la sección Cinerellae Singer ex Maas Geest.,enco ntrada en España , se describe e ilustra macro y microscópicamente. Esta especie se caracteriza porsus laminas muy decurrentes, por sus quei locistidios con largas y abundantes diverticulaciones y por suhabitat sobre gramíneas en descomposici ón.INTRODUCTIONContin uing with our mycological studies on Iberian mediterranean areas , we describe in this shortnote a rare species of Mycena fruiting abundantly, especially at the end of winter after the rainfalls, onroots and dried leaves of several species of Poaceae. Basidiocarps are efimerous and depend on theenvironmental moisture and extreme cold temperatures. The genus Mycena shows a high diversity inthe Iberian Peninsula, which has enabled the recent publication of a series of papers dealing with thedescription of severa l new species, and the repOlt of a number of rare species in different localities ofSpain. Among these, let us mention the following: ESTEVE-RAVENTOS & VILLARREAL (1997),ESTEVE-RAVENTOS & ORTEGA (1999) , MORENO & HEYKOOP (1998, 2000) , MORENO etal. (1999) , VILLARREAL & ESTEVE-RAVENTÓS (2000) , VILLARREAL et al. (1998, 1999).The monography of MAAS GEESTERANUS (1992) is, to date , a reference work for theidentification of the European species of Mycena. Complementary books are those of MALENÇON& BERTAULT (1975), especially for mediterranean areas, SMITH (1947), KÜHNER (1938) andMAAS GEESTERANUS & MEIJER (1997 ). The material is kept at the herbarium ofthe Universityof Alcalà (AH).Mycena pseudopicta (J.E. Lange) Kühner, Encycl. Myco. 10: 363 (1938 )== Omphalia pseudopicta J.E. Lange , Dansk. bot. Ark. 6: 15 (1930)Basidiomata fasciculate to gregarious. Pileus 0.5-1 cm diam. , convex to conical , with an obtuseumbo , hygrophanous, rugulose, dark greyish when young , paler greyish at maturity , subviscid but notgelatinous. Lamellae 15-24 reaching the stipe, arcuate with a decurrent tooth to strongly decurrent,lamellulae present, whitish. Stipe 15-55 x 1-2 mm, cylindrical , fragile , pruino se at the apex,concolorous to pileus, paler toward s the apex and whitish at the base, subviscid but not gelatinous.Odour not distinctive to slightly of raw potatoes. Taste not distinctive.Spores 8-12-(12.5) x (4)-5-6 um, cylindrical to ellipsoid, hyaline , smooth, amyloid (Figs. 5-7).Basidia 2-spored (Figs. 3-4),20-30 x 6-7 um, sterigmata up to 6 urn in length . Cheilocystidia 32-62 x272 Revista Catalana de Micologia, vol. 24: 271-275 ; 2002. Homenatge A. RocabrunaTab le 1.Differences between M. pseudopicta, M. cinerella, M. concolor and M. subconcolor.Lamellae Basidia Lamellar-edge Pileipellis Habi tatMycena Ascending or 2-spored Homogeneous Not embedded in On vegetable debrispseudopicta arcuate , long gelatinous matter of different Poa ceae.decurrentMycena Ascendin g or 4-spored homogeneous Somewhat Terrestrial amongcinerella arcuate , decurrent and 2- embedded in moss, fallen leaves ofwith a tooth spored gelatinous matter deciduous trees, andneedles of conifersMycena Ascendin g or 4-spored Heterogeneous Read ily gelatinized Growing inconco lor arcuate , association withsubhorizontal Spha gnum or peatMycena Subhorizontal, 4-spored Heterogeneou s Not embedded in Terrestrialsubconcolor subdecurrent gelatinou s matter6-11 urn, forming a sterile band (lamellar edge homogeneous), clavate, covered with numerous,unevenly spaced, rather coarse , simple to furcate, curved excrescences 4-25 x 2-4 um (Figs. 8-12).Pleurocystidia absent. Hymenophoral trama dextrinoid. Hyphae of the pileipellis 5-7 um wide,covered with simple and more or less short excrescences 3-6 x 1.5-3 um (Figs. 1-2). Hyphae of thecortical layer of the stipe 3-5 um wide, diverticulate, excrescences 2-5 x 1-3 um, terminal cells(caulocystidia) abundant at the apex, 13-14 urn wide, filiform to clavate and diverticulate. Clampconnection s absent.HABITAT. On root rests and basal leaves of Da ctylis glomerata subsp. hispanica (Roth) Nyman.MATERIAL EXAMINED. SPAIN: Madrid, Alcalà de Henares, campus de la Facultad de Biología, on roots and leaves ofDactylis glomerata subsp. hispanica, 28-1-2002, leg. G. Moreno and 1. Rejos, AH 19372.- Campus de la Facultad deBiología, on roots and leaves of D. glomerata subsp. hispanica , 10-11-1988, leg. 1. Alvarez and C. Bartolomé, AH11613.DISCUSSION. M. pseudopicta (lE. Lange) Kühner represents a rare species belonging to sectionCinerellae Singer ex Maas Geest. It is characterized by the greyish colours of both the pileus andstipe, its strongly decurrent gills, its coarse ly diverticulate cheilocystidia, the absence of pleurocy stidiaand its fructification on graminicolous debris. There are further species of Mycena with decurrentlamellae , belonging to other sections. One such section is Fuliginellae (A.H. Sm. ex Singer) MaasGeest., including species like M. geesteranii Heykoop , Esteve-Rav. et G. Moreno (HEYKOOP et al. ,1992), which differs from section Cinerellae because of the lamellar-edge wich is separable as anelastic-tough thread. Another section including species with invariably arcuate lamellae(V1LLARREAL et al. , 1999) is Insignes Maas Geest. emend. Villarreal , Heykoop et Maas Geest. It,nevertheless, differs from Cinerellae because its members have differently shaped cheilo- andcaulocystidia, pileipellis and stipitipellis always gelatinized and different habitat.Other members of section Cine rellae (MAAS GEESTERANUS, 1986), such as M. concolor(l E. Lange) Kühner and M. subconcolor A.H. Sm., share some macroscopic similarities withM. pseudopicta. M. concolor, a species which has been illustrated by EMMETT (1992), differs,however , from M. pseudopicta because of its typical fructification in association with Sphagnum andits narrower spores. On the other hand, M. subco ncolor differs from M. pseudopicta in havingsubhorizontal lamellae and quite different cheilocystidia.Another species which seems close to M. pseudopicta is M. cine rella. Both share the presence ofcheilocystidia of the "c inerellae -type" . M. cinerella, however, differs in having a strong farinaceousodour , less decurrent lamellae and different habitat. The differences between M. pseudopicta,M. cine rella , M. concolor and M. subconcolor are tabulated in Table 1.Finally, M. belliae (Johnst. in Berk.) P.D. Orton , which belongs to sect. Calamophilae Maas Geest.,because of it decurrent lamellae, pruinose stipe and graminicolous habitat on dead culms ofRevista Catalana de Micologia, vol. 24: 27 1-275; 2002 . Homenatge A. Rocabruna 273Figs. 1-14. Mycena pseudopicta (lE. Lange ) Kühner (AH 19372). 1-2. Pileipelli s; 3-4. bisporic basidia ; 5-7.spores; 8. cheilocystidia; 9-12. detail of cheilocy stidia ; 13-14. caulocy stidia at the apex of stipe.274 Revista Catalana de Micolog ia, vol. 24: 27 1-275; 2002. Homenatge A. RocabrunaPhragmites australis shows some macroscopic similarities with M. pseudopicta. It, however , differsby its reddish brown pileus, completely different cheilocystidia, gelatinized pileipellis and stipitipellisand its stipe arising from a mycelial patch.M. pseudopicta is known from Denmark (MAAS GEESTERANUS, 1986), Iceland (LANGE, 1949),Greenland (LANG~, 1955; probably doubtful) and Spain. In our "country it ,has been reported byMENDAZA & DIAZ (1987), MORENO et al. (1990), ANDRES-RODRIGUEZ et al. (1990),ROBICH (1994), GÓMEZ-BUSUTIL et al. (1996) and VILA & LLIMONA (1998), on differentgramineae or woody rests but generally in open areas of grasslands. The records of MALENÇON &BERTAULT (1975) must be considered as doubtful, since the gills were reported to be "largementadnées-subdécurrentes mais non triangulaires". Reexamination of their material must be carried out toconfirm their identity.ACKNOWLEDGMENTSThis work has been partly financed by the Research Project "Flora Micológ ica Ibérica IV" DGICYTPB98-0538-C04-02, granted by the "Dirección General de Investigación Científica y Técnica(Ministerio de Educación y Ciencia)".LITERATURE CITEDANDRÉS -RODRÍGU EZ, J., LLAMAS-FRADE , B., TERRÓN-ALFONSO , A., SANCHEZ-RODRÍGUEZ, J.A., GARCÍA-PRIETO, O., ARROJO -MARTÍN , E. & T. PÉREZ -JARAUTA (1990).- Guia de hongos de la Península Ib érica (noroestepen insular, León) . Celarayn editorial. León. 578 pp.EMMETT, E.E. (1992).- British Mycena species 3. The My cologist 6(4): 165-173.ESTEVE- RAVENTÓS , F. & M. VILLARREAL (1997).- Mycena quercophila, a new species of Mycena section Polyadelphiagrowing on Quercus ilex 1eaves. Osterr. Z. Pilzk: 6: 67-70.ESTEVE-RAVENTÓS, F. & A. ORTEGA (1999).- Two new agarics found in Anda1ucia (Peninsular Spain). Mycotaxon 71:95- 103.GÓMEZ-BUSUTlL, S., ESTEVE-RAVENTÓS, F., GARCÍA-ESCOLAR, P. & M. HEYKOOP (1996).- Catalogo micológicopreliminar del Parque Natural de las Hoces del río Duratón (Segovia, España) y alrededores. Bol. Soc. Micol. Madrid 21:273-29 1.HEYKOOP, M., ESTEVE-RAVENTÓS, F. & G. MORENO (1992).- Mycena geesterani sp. nov. in Peninsular Spain.Mycotaxon 45: 301-305.KÜHNER, R. (1938).- Le genre Mycena (Fries). Étude cytologique et systématique des espèces d 'europe et d 'Am érique duNord. Paul Lechevalier Editeur. Paris. 7 10 pp.LANGE, M. (1949).- Hatsvampe fra Island. Med noter om svampefloret paa Hekla efter udbruddet 1947. Bot. Tidsskr. 48: 294-298.LANGE, M. (1955).- Macromycetes. Part n.Greenland Agaricales...etc. Meddr Grenland 147 (1 1).MAAS GEESTERANUS, R.A (1986).- Conspectus ofthe Mycenas ofthe Northem Hemisphere-7. Section Cinerellae. Proc.Kon. Ned. Akad. Wet. 89(2): 183-20 1.MAAS GEESTE RANUS, R.A. (1992).- Mycenas of the Northern Hemisphere. 2 Vols. Kon. Ned. Akad. Wet. Verh. Afd. Nat. TI90.MAAS GEESTERANUS, R.A. & A.A.R. MEUER (1997).- Mycenae paranaenses. Kon. Ned. Akad. Wet., Verhand. Afd. Nat.2 (97): 1-164.MALENÇ ON, G. & R. BERTAULT (1975).- Flore des champignons sup érieurs du Maroc 2. Trav. Inst. Seient. Chérif. et dela Faculté des Sciences de Rabat. 540 pp.MENDAZA, R. & E. DÍAZ (1987).- Las setas. Guia fo togrdfica y desc riptiva. Iberduero. Vizcaya. 932 pp.MORENO, G. & M . HEYKOOP (1998).- Mycena cistophila, a new mediterranean species from Spain. Osterr. Z. Pilrk. 7: 29-32.MORENO, G. & M. HEYKOOP (2000).- Due nuove specie di Mycena della vegetazione mediterranea iberica. Rivista diMicologia. Boll. Assoc. Micol. Bresadola 4: 303-3 13.MORENO G., HEYKOOP , M. & L. ROMERO DE LA OSA (1999).- Mycena gladiocystis, a rare foliicolous species growingon Querc us ilex. Osterr. Z. Pilzk. 8: 9- 13.MORENO, G., ESTEVE-RAVENTÓS, F., !LLANA, C. & M. HEYKOOP (1990).- More agarics from xerophytic grasslandsin central Spain. Mycol. Res. 94: 78 1-788.ROBICH G. (1994).- Alcune interessanti Mycena. Butll. Soc. Catalana Mi col. 16-17: 33-46.Revista Catalana de Micologia, vol. 24: 271-275; 2002. Homenatge A. Rocabruna 275SMITH , A.H. (1947 ).- North American species of Mycena. Ann Arbor. Univ. Michigan press, London. Oxford Univ. press.521 pp.VILA, 1. & X. LLIMONA (1998 ).- Els fongs del Parc Natural del Cap de Creus i Serra de Verdera (Girona). 1. Espèciesxeròfiles de llocs oberts, amb Cistus i gramínies. Revista Catalana Micol. 21: 125-136.VILLARREAL, M. & F. ESTEVE-RAVENTÓS (2000).- Mycena roseoquercina, a new foliicolous species of Quercus ilex.Osterr.Z. Pilrk. 9: 23-26.VILLARREAL, M., HEYKOOP, M., ESTEVE-RAVENTÓS, F. & R.A. MAAS GEESTERANUS (1998) .- Further newspecies of Mycena and a new section from Spain. Persoonia 16(4): 527-535.VILLARREAL, M., HEYKOOP, M. & R.A. MAAS GEESTERANUS (1999).- Further new species of Mycena from Spain n.Persoonia 17: 235-244.Mycena pseudopicta (J .E. Lange) Kühner

Mycena pseudopicta (J.E. Lange) Kühner, a rare graminicolous species growing on Poaceae

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Mycena pseudopicta (J.E. Lange) Kühner, a rare graminicolous species growing on Poaceae

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