{"id":4055,"date":"2020-09-02T21:32:05","date_gmt":"2020-09-02T20:32:05","guid":{"rendered":"https:\/\/micologica-barakaldo.org\/?p=4055"},"modified":"2020-12-16T22:32:12","modified_gmt":"2020-12-16T21:32:12","slug":"leucoagaricus-americanus","status":"publish","type":"post","link":"https:\/\/micologica-barakaldo.org\/eu\/leucoagaricus-americanus\/","title":{"rendered":"Leucoagaricus americanus"},"content":{"rendered":"

=Leucoagaricus bresadolae<\/em>\u00a0(Schulzer) Bon & Boiffard,\u00a0Docums Mycol.<\/em>\u00a07(nos 27-28): 15. 1977<\/p>\n

=Leucocoprinus bresadolae<\/em>\u00a0(Schulzer) Wasser, in Gams,\u00a0Kl. Krypt.-Fl.<\/em>, Bd\u00a0II\u00a0b\/2, ed. 4 (Stuttgart)\u00a02b\/2: 221. 1978<\/p>\n

Caracteres macrosc\u00f3picos<\/em>. P\u00edleo de hasta 120 mm de di\u00e1metro, al principio tronco-c\u00f3nico, despu\u00e9s convexo, finalmente aplanado, pero con umb\u00f3n obtuso; margen espeso, estriado en la madurez; superficie pileica cubierta de escamas conc\u00e9ntricas de color primero marr\u00f3n lil\u00e1ceo, marr\u00f3n viol\u00e1ceo y despu\u00e9s marr\u00f3n rojo oscuro, se disocian y separan en la madurez dejando ver un fondo crema blanquecino, el disco permanece de color marr\u00f3n rojizo, en las roturas o al frotamiento toma una tonalidad amarillo azafr\u00e1n, que despu\u00e9s es naranja rojizo sucio. L\u00e1minas apretadas, con lam\u00e9lulas, libres, ventricosas, de color blanquecino o crema, se manchan de amarillo naranja al frotar; arista horadada y concolor. Est\u00edpite de hasta 120 x 15 mm, fusiforme, bulboso y terminado en punta, primero lleno, despu\u00e9s hueco, fibrilloso, blanquecino, progresivamente y desde la base toma una tonalidad marr\u00f3n rojizo oscuro, al frotar se mancha de amarillo azafr\u00e1n; anillo membranoso, no muy persistente, blanquecino, marr\u00f3n oscuro en el margen. Contexto escaso, espeso en el disco, blanquecino, que, al corte, toma primero un intenso color amarillo azafr\u00e1n y despu\u00e9s marr\u00f3n naranja; olor agradable, sabor un poco acidulado.<\/p>\n

Caracteres microsc\u00f3picos<\/em>. Basidi\u00f3sporas de 9,0-12,5 x 6,0-7,0 \u03bcm, Q = 1,3-1,8; de ovoidales a el\u00edpticas, dextrinoides, metacrom\u00e1ticas, con poro germinativo, hialinas, con pared gruesa, gutuladas. Queilocistidios de hasta 100 x 20 \u03bcm, cil\u00edndricos, fusiformes, lageniformes sinuosos, gris verdosos con NH3, con cuello corto o alargado. Pileipellis formada por hifas m\u00e1s o menos erectas de hasta 160 x 15 \u03bcm, flexuosas, subfusiformes, con pigmentaci\u00f3n marr\u00f3n, juntas sin f\u00edbulas.<\/p>\n

Ecolog\u00eda<\/em>. En verano y oto\u00f1o en prados, parques y jardines, en el suelo o sobre hierba seca y cortada, normalmente de forma cespitosa. Distribuci\u00f3n<\/em>.\u00a0 Poco com\u00fan.<\/p>\n<\/div>

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