{"id":401,"date":"2018-02-07T19:33:00","date_gmt":"2018-02-07T19:33:00","guid":{"rendered":"http:\/\/www.centrodeestudiosmicologicosasturianos.org\/?p=401"},"modified":"2020-04-18T21:10:41","modified_gmt":"2020-04-18T20:10:41","slug":"rosellinia-helvetica-l-e-petrini-petrini-s-m-francis","status":"publish","type":"post","link":"https:\/\/www.centrodeestudiosmicologicosasturianos.org\/?p=401","title":{"rendered":"<h2 style=\"font-style: italic;display:inline;text-transform:none;\">  Rosellinia helvetica <\/h2><h4 style=\"font-style: normal;display:inline;\"> L.E. Petrini, Petrini &#038; S.M. Francis <\/h4>"},"content":{"rendered":"<div><b><i>Rosellinia helvetica<\/i><\/b> L.E. Petrini, Petrini &amp; S.M. Francis, <i>Sydowia<\/i> 41: 268 (1989)<u><\/u><u><\/u><\/div>\n<div><\/div>\n<div>Material estudiado: Valle de Lago, pista ganadera al lago del Valle (Somiedo) Asturias, 43\u00ba 3\u2019 32\u2019\u2019N; 6\u00ba 10\u2019 04\u2019\u2019O, 1.281 m, 7-IX-2016, <i>leg<\/i>. &amp; <i>det<\/i>. E. Rubio, ERD-6820.<u><\/u><u><\/u><\/div>\n<div style=\"width: 262px\" class=\"wp-caption alignleft\"><a style=\"clear: left; margin-bottom: 1em; margin-left: auto; margin-right: auto;\" href=\"https:\/\/4.bp.blogspot.com\/-7zqxlETxSE8\/WntRBN3W_cI\/AAAAAAAAJcc\/xBlbSpy8XsM_DB3BtnAkfuZSG-f03sRCgCLcBGAs\/s1600\/Rosellinia%2Bhelvetica%2BERD-6820.%2BValle%2Bde%2BLago%2Bal%2Blago%2Bdel%2BValle%2B%2528Somiedo%2529%252C%2B7-IX-2016%252C%2BFagus%2Bsylvatica.JPG\" target=\"_blank\" rel=\"noopener noreferrer\"><img loading=\"lazy\" decoding=\"async\" class=\"\" src=\"https:\/\/4.bp.blogspot.com\/-7zqxlETxSE8\/WntRBN3W_cI\/AAAAAAAAJcc\/xBlbSpy8XsM_DB3BtnAkfuZSG-f03sRCgCLcBGAs\/s400\/Rosellinia%2Bhelvetica%2BERD-6820.%2BValle%2Bde%2BLago%2Bal%2Blago%2Bdel%2BValle%2B%2528Somiedo%2529%252C%2B7-IX-2016%252C%2BFagus%2Bsylvatica.JPG\" alt=\"Rosellinia helvetica\" width=\"262\" height=\"162\" border=\"0\" data-original-height=\"995\" data-original-width=\"1600\" \/><\/a><p class=\"wp-caption-text\">Rosellinia helvetica ERD-6820. Valle de Lago al lago del Valle (Somiedo-Asturias), 7-IX-2016, Fagus sylvatica. Foto: Enrique Rubio<\/p><\/div>\n<div>\u00a0\u00a0\u00a0 Estromas superficiales de 600-1.100 \u00b5m de di\u00e1metro por 600-1.000 \u00b5m de altura, simples, hemisf\u00e9ricos o algo piriformes, con los ost\u00edolos papilados o c\u00f3nicos, en ocasiones aislados, pero habitualmente confluyentes, formando entonces masas prietas de muchos peritecios de color pardo negruzco, que crecen en ramas terminales decorticadas de <i>Fagus sylvatica<\/i> de 4-5 mm de di\u00e1metro, sobre un denso y persistente subiculum lanoso o groseramente aterciopelado de color pardo oscuro o pardo negruzco. Ectostroma carbon\u00e1ceo, fr\u00e1gil y de 60-70 \u00b5m de espesor. Anamorfo no observado.<u><\/u><u><\/u><\/div>\n<div style=\"width: 217px\" class=\"wp-caption alignright\"><a style=\"margin-left: auto; margin-right: auto;\" href=\"https:\/\/3.bp.blogspot.com\/-8JnOUgTLdZ4\/WntRAB9urEI\/AAAAAAAAJcU\/-DQxLH5nqdgkQj20nj4wW--Mq8Lim1U4gCLcBGAs\/s1600\/Rosellinia%2Bhelvetica%2BERD-6820.%2BEsporas%2Bx%2B1000%2B%25282%2529.%2BValle%2Bde%2BLago%2Bal%2Blago%2Bdel%2BValle%2B%2528Somiedo%2529%252C%2B7-IX-2016%252C%2BFagus%2Bsylvatica.JPG\" target=\"_blank\" rel=\"noopener noreferrer\"><img loading=\"lazy\" decoding=\"async\" class=\"\" src=\"https:\/\/3.bp.blogspot.com\/-8JnOUgTLdZ4\/WntRAB9urEI\/AAAAAAAAJcU\/-DQxLH5nqdgkQj20nj4wW--Mq8Lim1U4gCLcBGAs\/s400\/Rosellinia%2Bhelvetica%2BERD-6820.%2BEsporas%2Bx%2B1000%2B%25282%2529.%2BValle%2Bde%2BLago%2Bal%2Blago%2Bdel%2BValle%2B%2528Somiedo%2529%252C%2B7-IX-2016%252C%2BFagus%2Bsylvatica.JPG\" alt=\"Rosellinia helvetica \" width=\"217\" height=\"326\" border=\"0\" data-original-height=\"1504\" data-original-width=\"1000\" \/><\/a><p class=\"wp-caption-text\">Rosellinia helvetica ERD-6820. Esporas x 1000. Valle de Lago al lago del Valle (Somiedo), 7-IX-2016, Fagus sylvatica Foto: Enrique Rubio<\/p><\/div>\n<div>\u00a0\u00a0\u00a0 Ascos estrechamente cil\u00edndricos, atenuados hacia una base m\u00e1s o menos larga, de 172-230 x 11-12 \u00b5m, con una <i>pars sporifera<\/i> de 157-175 \u00b5m y unos est\u00edpites de 30-75 \u00b5m. Dichos ascos contienen ocho asc\u00f3sporas en disposici\u00f3n oblicuamente uniseriada y est\u00e1n provistos de un conspicuo aparato apical urniforme y euamiloide en el reactivo de Melzer, de 6-8 x 5-7 \u00b5m. Asc\u00f3sporas de (21-)23(-25) x (9-)10(-11) \u00b5m; Q = (1,9-)2,3(-2,7); elipsoidales, asim\u00e9tricas, con un lado convexo y otro aplanado y los polos ligeramente agudizados; inicialmente hialinas, m\u00e1s tarde oliv\u00e1ceas y de color pardo oscuro en la madurez plena, habitualmente multigutuladas, provistas de una hendidura germinativa bien visible, m\u00e1s o menos recta, situada en el lado menos convexo de la espora, que abarca la totalidad de la longitud esporal. Las esporas son unicelulares y no poseen ap\u00e9ndice gelatinoso alguno, pero se encuentran rodeadas por un ancho envoltorio mucoso, s\u00f3lo bien visible mediante el empleo de la tinta china diluida, aunque parcialmente tambi\u00e9n en el reactivo de Melzer, que inicialmente rodea por igual y de manera difusa a toda la espora, pero que posteriormente parece limitarse a los polos y a la regi\u00f3n ventral de la misma. En esporas j\u00f3venes, reci\u00e9n expulsadas del asco, puede llegar a alcanzar 6-7 \u00b5m de anchura, mientras que en esporas m\u00e1s maduras, el envoltorio mucoso se circunscribe m\u00e1s al contorno esporal, disminuye su tama\u00f1o, y alcanza 2,5-3 \u00b5m de espesor en los polos, mientras que en la regi\u00f3n ventral de la espora es menos ancho y solo llega a las 2 \u00b5m de anchura. Par\u00e1fisis abundantes, hialinas, multigutuladas, atenuadas hacia un \u00e1pice de hasta 2 \u00b5m de anchura y de hasta 9 \u00b5m de anchura en la base, dispersas por una matriz gelatinosa. <u><\/u><u><\/u><\/div>\n<div style=\"width: 164px\" class=\"wp-caption alignleft\"><a style=\"margin-left: auto; margin-right: auto;\" href=\"https:\/\/1.bp.blogspot.com\/-ihzwMi-208w\/WntRACB2tsI\/AAAAAAAAJcQ\/pWy8q9srYf8Dskx2nyIt7kz-xsqUOd6lQCLcBGAs\/s1600\/Rosellinia%2Bhelvetica%2BERD-6820.%2BEsporas%2Bx%2B1000.%2BValle%2Bde%2BLago%2Bal%2Blago%2Bdel%2BValle%2B%2528Somiedo%2529%252C%2B7-IX-2016%252C%2BFagus%2Bsylvatica.JPG\" target=\"_blank\" rel=\"noopener noreferrer\"><img loading=\"lazy\" decoding=\"async\" class=\"\" src=\"https:\/\/1.bp.blogspot.com\/-ihzwMi-208w\/WntRACB2tsI\/AAAAAAAAJcQ\/pWy8q9srYf8Dskx2nyIt7kz-xsqUOd6lQCLcBGAs\/s400\/Rosellinia%2Bhelvetica%2BERD-6820.%2BEsporas%2Bx%2B1000.%2BValle%2Bde%2BLago%2Bal%2Blago%2Bdel%2BValle%2B%2528Somiedo%2529%252C%2B7-IX-2016%252C%2BFagus%2Bsylvatica.JPG\" alt=\"Rosellinia helvetica\" width=\"164\" height=\"247\" border=\"0\" data-original-height=\"1504\" data-original-width=\"1000\" \/><\/a><p class=\"wp-caption-text\">Rosellinia helvetica ERD-6820. Esporas x 1000. \u00a0Valle de Lago al lago del Valle (Somiedo), 7-IX-2016, Fagus sylvaticaFoto: Enrique Rubio<\/p><\/div>\n<div>OBSERVACIONES<u><\/u><u><\/u><\/div>\n<div><\/div>\n<div><i>Rosellinia helvetica<\/i> es un taxon descrito hace algunos a\u00f1os por PETRINI &amp; al. (1989), que forma parte del complejo de <i>R. mammaeformis<\/i> y que se caracteriza por sus estromas c\u00f3nicos situados sobre un abundante y persistente subiculum y por sus caracteres esporales. Las medidas esporales de nuestra recolecci\u00f3n: 21-25 x 9-11 \u00b5m, muestran esporas algo m\u00e1s anchas que las otorgadas por PETRINI &amp; <i>al<\/i>. (<i>op. cit<\/i>.): 19,8-21,6-24,3 x 6,8-7,7-9 \u00b5m, pero de 18-25 x 6,3-11 en un trabajo posterior (PETRINI, 2013), y por FOURNIER &amp; MAGNI (2002): 20-24.5 x 6.8-9.5 \u00b5m.<u><\/u><u><\/u><\/div>\n<div>\n<p>Sus diferencias con <i>R. mammiformis<\/i>, tax\u00f3n del que parece alejarse por su persitente subiculum y por una mayor anchura esporal, y que figura incluso en un grupo morfol\u00f3gico diferente en los estudios de PETRINI &amp; PETRINI (2005). La distribuci\u00f3n de <i>Rosellinia helvetica<\/i> p<\/p>\n<div style=\"width: 277px\" class=\"wp-caption alignright\"><a style=\"margin-left: auto; margin-right: auto;\" href=\"https:\/\/3.bp.blogspot.com\/-nKlFWRhoo7k\/WntRAtn9IXI\/AAAAAAAAJcY\/vSMK02MRZbojOEnVoTY2Af2FVizxQn1RQCLcBGAs\/s1600\/Rosellinia%2Bhelvetica%2BERD-6820.%2BMicrograf%25C3%25ADa.%2BValle%2Bde%2BLago%2Bal%2Blago%2Bdel%2BValle%2B%2528Somiedo%2529%252C%2B7-IX-2016%252C%2BFagus%2Bsylvatica.JPG\" target=\"_blank\" rel=\"noopener noreferrer\"><img loading=\"lazy\" decoding=\"async\" class=\"\" src=\"https:\/\/3.bp.blogspot.com\/-nKlFWRhoo7k\/WntRAtn9IXI\/AAAAAAAAJcY\/vSMK02MRZbojOEnVoTY2Af2FVizxQn1RQCLcBGAs\/s640\/Rosellinia%2Bhelvetica%2BERD-6820.%2BMicrograf%25C3%25ADa.%2BValle%2Bde%2BLago%2Bal%2Blago%2Bdel%2BValle%2B%2528Somiedo%2529%252C%2B7-IX-2016%252C%2BFagus%2Bsylvatica.JPG\" alt=\"Rosellinia helvetica \" width=\"277\" height=\"415\" border=\"0\" data-original-height=\"1600\" data-original-width=\"1068\" \/><\/a><p class=\"wp-caption-text\">Rosellinia helvetica ERD-6820. Micrograf\u00eda. \u00a0Valle de Lago al lago del Valle (Somiedo), \u00a07-IX-2016, Fagus sylvatica. Foto: Enrique Rubio<\/p><\/div>\n<p>arece limitada a Europa: Suiza, Francia (Pirineos Atl\u00e1nticos), Suecia y Ucrania (PETRINI, 2013), y a la madera no corticada de dicotiled\u00f3neas en bosques montanos, particularmente de <i>Fagus sylvatica<\/i>, aunque tambi\u00e9n ha sido observada sobre <i>Salix viminalis<\/i> y <i>Carpinus betulus<\/i> (PETRINI, 2013).<u><\/u><u><\/u><\/p>\n<\/div>\n<div><\/div>\n<div><span lang=\"EN-US\">BIBLIOGRAF\u00cdA<u><\/u><u><\/u><\/span><\/div>\n<div><\/div>\n<div><span lang=\"EN-US\" style=\"font-size: 10pt;\">FOURNIER J. &amp; MAGNI J.-F. (2002). Pyrenomycetes from Southwestern<u><\/u><u><\/u><\/span><\/div>\n<div><span style=\"font-size: 10pt;\">France. <a href=\"http:\/\/pyrenomycetes.free.fr\/rosellinia\/html\/Rosellinia_helvetica.htm\" target=\"_blank\" rel=\"noopener noreferrer\" data-saferedirecturl=\"https:\/\/www.google.com\/url?hl=es&amp;q=http:\/\/pyrenomycetes.free.fr\/rosellinia\/html\/Rosellinia_helvetica.htm&amp;source=gmail&amp;ust=1518117174157000&amp;usg=AFQjCNEM2s1lJtH9XmBlZ-MbDPHQAtW2ww\">http:\/\/pyrenomycetes.free.fr\/<wbr \/>rosellinia\/html\/Rosellinia_<wbr \/>helvetica.htm<\/a>. Consultado el 29-IX-2016.<u><\/u><u><\/u><\/span><\/div>\n<div><span style=\"font-size: 10pt;\">\u00a0<\/span><\/div>\n<div><span lang=\"EN-US\" style=\"font-size: 10pt;\">PETRINI, L.E. (2013). <i>Rosellinia<\/i>&#8211; a world monograph. <i>Bibliotheca Mycologica<\/i> Band 205: 1-342.<u><\/u><u><\/u><\/span><\/div>\n<div><span style=\"font-size: 10pt;\">\u00a0<\/span><\/div>\n<div><span style=\"font-size: 10pt;\"><span lang=\"EN-US\">PETRINI, L.E. &amp; O. PETRINI (2005). Morphological studies in <i>Rosellinia<\/i> (<i>Xylariaceae)<\/i> : the first step towards a polyphasic taxonomy. <\/span><i>Mycol. Res.<\/i> 109 (5): 569\u2013580<u><\/u><u><\/u><\/span><\/div>\n<div><span style=\"font-size: 10pt;\">\u00a0<\/span><\/div>\n<div><span style=\"font-size: 10pt;\">PETRINI, L.E., O. PETRINI &amp; S.M. FRANCIS (1989). <span lang=\"EN-US\">On <i>Rosellinia mammaefortnis <\/i>and other related species. <\/span><i>Sydowia<\/i> 41: 257-276.<\/span><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Rosellinia helvetica L.E. Petrini, Petrini &amp; S.M. Francis, Sydowia 41: 268 (1989) Material estudiado: Valle<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11,2434,35],"tags":[2813],"class_list":["post-401","post","type-post","status-publish","format-standard","hentry","category-ascomycota","category-clase-sordariomycetes","category-orden-xylariales","tag-genero-rosellinia"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Rosellinia helvetica  L.E. Petrini, Petrini &amp; S.M. 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