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Hymenoscyphus
Salvador Tello,
06-01-2014 20:13
He encontrado este Hymenoscyphus sobre tallos secos de Sambucus ebulus. Pienso que podría ser Hymenoscyphus caudatus, pero creo que las esporas deberían ser más scutuloid y no se si es posible en este sustrato. ¿Que os parece?
Apotecios gregarios o solitarios, blancos, estipitados, hasta de 4 mm, con el borde revoluto de jóvenes y planos o convexos cuando están maduros, creciendo en tallos secos de Sambucus ebulus. Ascas de (112,46) 115,05 - 123,78 (129,31) x (11,88) 12,50 - 13,19 (13,36) µm; Me = 119,83 x 12,79 µm, inoperculadas, octospóricas, cilindrico-claviformes, generalmente curvadas, con el ápice amiloide, sin crozier en la base. Esporas de (15,20) 16,25 - 18,66 (19,48) x (5,36) 5,65 - 6,34 (6,50) µm; Me = 17,50 x 6,02 µm ; Qe = 2,91, biseriadas, lisas, hialinas, estrechadas ligeramente en el centro, con numerosas gotitas de aceite en su interior. Paráfisis cilíndricas, septadas en su parte inferior, con numerosas gotitas no muy refringentes en el segmento superior.
Gracias.
Saludos.
Salvador.
Imagen2-0020.jpg
Hans-Otto Baral,
06-01-2014 22:18
Re : Hymenoscyphus
Hi salvador
when neglecting the substrate then I would be sure this is H. sparsus. Typical is that the spores are practically not scutuloid, the internal guttules rather small, and the droplets in the paraphyses restricted to the apical part. But that species occurs on leaves, mainly of Quercus, also Fagus etc. But when growing on petioles of Robinia etc., why not on herbs? Hmmm. Also I know H, sparsus rarely exceeding 1 mm diam., have you a scale for your macro? 4 mm would be extreme.
Zotto
when neglecting the substrate then I would be sure this is H. sparsus. Typical is that the spores are practically not scutuloid, the internal guttules rather small, and the droplets in the paraphyses restricted to the apical part. But that species occurs on leaves, mainly of Quercus, also Fagus etc. But when growing on petioles of Robinia etc., why not on herbs? Hmmm. Also I know H, sparsus rarely exceeding 1 mm diam., have you a scale for your macro? 4 mm would be extreme.
Zotto
Salvador Tello,
06-01-2014 22:43
Re : Hymenoscyphus
Perdona Zotto, ha sido un error mio, acabo de medirlos y en realidad llegan hasta 1 mm, he confundido las medidas con otros H. scutula que he cogido en el mismo sustrato.
Hans-Otto Baral,
06-01-2014 22:45
Re : Hymenoscyphus
Gracias