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Kretzschmaria Deusta Deusta Kretzschmaria 5 De 1 Página 20170607/20170702 © Demetrio Merino Alcántara [email protected] Condiciones de uso Kretzschmaria deusta (Hoffm.) P.M.D. Martin, Jl S. Afr. Bot. 36(2): 80 (1970) Anamorfo Telemorfo Xylariaceae, Xylariales, Xylariomycetidae, Sordariomycetes, Pezizomycotina, Ascomycota, Fungi ≡ Discosphaera deusta (Hoffm.) Dumort., Comment. bot. (Tournay): 91 (1822) ≡ Hypoxylon deustum (Hoffm.) Grev., Fl. Edin.: pl. 324, fig. 2 (1828) ≡ Hypoxylon deustum f. conidiophorum (Bres.) Hendr., Publ. Inst. nat. Étude agron. Congo belge, Sér. sci. 35: 7 (1948) ≡ Hypoxylon deustum (Hoffm.) Grev., Fl. Edin.: pl. 324, fig. 2 (1828) f. deustum = Hypoxylon magnosporum Lloyd, Mycol. Writ. 6(Letter 65): 1054 (1920) [1921] = Hypoxylon ustulatum Bull., Hist. Champ. Fr. (Paris) 1: 176 (1791) ≡ Nemania deusta (Hoffm.) Gray, Nat. Arr. Brit. Pl. (London) 1: 516 (1821) = Nemania maxima (Weber) House, N.Y. St. Mus. Bull. 266: 48 (1925) ≡ Sphaeria albodeusta Wahlenb., Fl. Suecica 2: 1001 (1826) ≡ Sphaeria deusta Hoffm., Veg. Crypt. 1: 3 (1787) ≡ Sphaeria deusta Schumach., Enum. pl. (Kjbenhavn) 2: 163 (1803) = Sphaeria maxima Bolton, Hist. fung. Halifax, App. (Huddersfield) 3: 181 (1792) [1791] = Sphaeria maxima Weber, Spicil. fl. goetting.: 286 (1778) = Sphaeria versipellis Tode, Fung. mecklenb. sel. (Lüneburg) 2: 55 (1791) ≡ Stromatosphaeria deusta (Hoffm.) Grev., Fl. Edin.: 355 (1824) ≡ Ustulina deusta (Hoffm.) Lind, Danish Fungi (Copenhagen): 252 (1913) = Ustulina maxima (Weber) Wettst., Verh. zool.-bot. Ges. Wien 35: 592 (1885) = Ustulina vulgaris Tul. & C. Tul., Select. fung. carpol. (Paris) 2: 23 (1863) = Ustulina vulgaris f. conidiophora Bres., Fl. Bas- et Moyen-Congo 3(3): 328 (1912) = Ustulina vulgaris Tul. & C. Tul., Select. fung. carpol. (Paris) 2: 23 (1863) f. vulgaris Material estudiado: España, Asturias, Pola de Somiedo, Caunedo-Hayedo La Peral, 29TQH2369, 1.566 m, sobre tocón de Fagus sylvatica cubierto de musgo, 7-VI-2017, leg. Dianora Estrada, Marcote, Enrique Arconada y Demetrio Merino, JA-CUSSTA: 8886. Descripción macroscópica: Anamorfo: Crustáceo, de color grisáceo con los bordes blanquecinos. Telemorfo: Estroma crustáceo, irregular, de medidas muy variables llegando a formar grandes costras, carbonáceo, frágil, de color marrón oscuro a negro. Peritecios numerosos, globosos, inmersos en el estroma, con pared interior rugosa y furfurácea, de 0,1-0,3 × 0,1-0,3 mm; Q = 1,0-1,2; N = 29; Me = 0,2 × 0,2 mm; Qe = 1,1. Estoma cónico, emergente de la superficie del estroma. Ostiolo cilíndrico. Olor inapreciable. Descripción microscópica: Anamorfo: Conidióforos en empalizada, de paredes gruesas, con hifas septadas. Conidios elipsoidales a cilíndricos, agudos en uno de sus extremos y redondeados en el otro, de (5,5-)6,5-8,6(-8,9) × (2,0-)3,0-4,0(-4,9) µm; Q = (1,6-)1,8-2,6(-3,3); N = 42; Me = 7,5 × 3,5 µm; Qe = 2,2. Contexto de textura intrincada. Kretzschmaria deusta 20170607/20170702 Página 1 de 5 Descripción microscópica: Telemorfo: Ascas no observadas, descritas como cilíndricas, uniseriadas, octospóricas y con anillo apical amiloide. Ascosporas cilíndricas a filiformes, truncadas por uno de sus lados, con línea germinativa longitudinal, de color marrón oscuro a negro, de (25,7 -)28,4-34,1(-39,4) × (6,7-)7,0-9,6(-10,8) µm; Q = (2,9-)3,2-4,6(-5,3); N = 103; Me = 30,9 × 8,1 µm; Qe = 3,9. Paráfisis no observa- das, citadas como filiformes. A. Conidios. B. Conidióforos. Kretzschmaria deusta 20170607/20170702 Página 2 de 5 C. Contexto anamorfo. D. Peritecios. Kretzschmaria deusta 20170607/20170702 Página 3 de 5 D. Peritecios. Kretzschmaria deusta 20170607/20170702 Página 4 de 5 E. Esporas. Observaciones Aunque también puede crecer en otros planifolios, abunda especialmente en Fagus sylvatica. Se diferencia de las especies del género Hypoxylon en su desarrollo crustáceo y en el gran tamaño de las esporas (BREITENBACH & KRÄNZLIN, 1983:272 como Ustulina deusta). Otras descripciones y fotografías BREITENBACH J. & F. KRÄNZLIN (1983). Fungi of Switzerland Vol. 1. Ascomycetes. Mykologia Luczern. Pág. 272 como Ustulina deusta. Salvo indicación en contrario, las fotos están realizadas por Demetrio Merino. Kretzschmaria deusta 20170607/20170702 Página 5 de 5 .
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