{"id":4163,"date":"2020-09-13T11:46:42","date_gmt":"2020-09-13T10:46:42","guid":{"rendered":"https:\/\/micologica-barakaldo.org\/?p=4163"},"modified":"2020-09-19T11:29:08","modified_gmt":"2020-09-19T10:29:08","slug":"russula-gracillima","status":"publish","type":"post","link":"https:\/\/micologica-barakaldo.org\/eu\/russula-gracillima\/","title":{"rendered":"Russula gracillima"},"content":{"rendered":"

Caracteres macrosc\u00f3picos<\/em>. P\u00edleo de hasta 60 mm de di\u00e1metro, inicialmente convexo, pronto extendido y d\u00e9bilmente deprimido al centro; margen fino, trasl\u00facido, incurvado al principio, brevemente acanalado en la madurez; superficie pileica separable hasta un tercio del radio, viscida o un poco viscosa, lisa hacia el margen y un poco rugosa en el disco, de color rosa carm\u00edn, alrededor del disco pardo oliv\u00e1ceo, rosa lil\u00e1ceo, verdoso en la zona media. L\u00e1minas poco apretadas, con lam\u00e9lulas, intervenadas, anchas hasta x 5mm, adnato-libres, blanquecinas, despu\u00e9s crema p\u00e1lido; arista entera, concolor. Est\u00edpite de hasta 80 x 12 mm, m\u00e1s o menos cil\u00edndrico, fr\u00e1gil, un poco atenuado hacia la base, primero lleno, despu\u00e9s esponjoso, rugoso-venoso, blanquecino, manch\u00e1ndose de rosa carm\u00edn por zonas, griseando por alta humedad, superficie finamente rugosa. Contexto espeso, fr\u00e1gil, blanca, olor d\u00e9bil afrutado, sabor acre incluso en las l\u00e1minas. Reacciones macroqu\u00edmicas<\/em>: Guayaco positiva de intensidad media, Sulfato de hierro rosado poco intensa.<\/p>\n

Caracteres microsc\u00f3picos<\/em>. Basidi\u00f3sporas de 8,5-9,0 x 5,5-7,0 \u00b5m \/ Q = 1,3-1,4; obovoides u oblongas, con gruesa ap\u00edcula, con gruesas verrugas, con densidad moderada, aisladas o con escasos conectivos, de hasta x1,2\u00b5m, obtusas o c\u00f3nico obtusas. Esporada crema p\u00e1lido. Cistidios de hasta 90 x 15 \u00b5m, abundantes, subcil\u00edndricos o fusiformes, rematados en el \u00e1pice con un corto ap\u00e9ndice, con reacci\u00f3n negruzca m\u00e1s o menos en\u00e9rgica a la sulfovainillina. Pileipellis formada por: pelos cil\u00edndricos, obtusos, sinuosos, ramificados, de hasta x3\u00b5m, dermatocistidios numerosos, cilindr\u00e1ceos subfusiformes o subclaviformes, de hasta x10\u00b5m, poco tabicados, negruzcos a la sulfovainilla.<\/p>\n

Ecolog\u00eda<\/em>. En verano y principios de oto\u00f1o, exclusivamente bajo abedules (Betula<\/em>), en zonas muy h\u00famedas, de tendencia montana y subalpina.<\/em> \u00a0Distribuci\u00f3n<\/em>. Muy raro.<\/p>\n<\/div>

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<\/i>VER FICHA COMPLETA<\/span><\/a><\/div>
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