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Calycellina en hojas de Malus domestica
Javier Ormad,
29-12-2014 21:06
Hola a todos. Os presento esta posible Calycellina (No tengo claro las diferencias con Calycina, aunque aquí el excípulo es de textura angularis, que descartaría Calycina)
En superficie de hojas de Malus domestica, muy deterioradas. Apotecios blancos, disciformes hasta 3 mm de Ø, de consistencia cereo-gelatinosa, sin pie manifiesto, adosadas a sustrato.
Ascas claviformes, monoseriadas, 8 esporas, IKI+ puntiformes, con croziers +, de 60-85 x 8 micras. Ascosporas largamente elípticas, algunas con un lateral recto y el otro curvado y pequeñas gútulas en extremos esporales, lisas, hialinas, posible un septo en espora madura, de 11-16 x 3-4 micras. Parafisis estrechamente cilíndicas, con VBs de considerable tamaño. Excípulo medial con células angulares, globosas y subglobosas, con pigmento amarillento en algunas zonas. Pelos con 2-3 células e inclusiones gutulares. Podría encajar con Calycellina populina, pero las esporas son mucho mayores.
¿Qué os parece?
Saludos
Hans-Otto Baral,
29-12-2014 21:17
Re : Calycellina en hojas de Malus domestica
I suppose Calycellina populina. Spore size is rather variable in the samples in my files. Maybe there are different species (one being rubescens), but the limits are not clear.
The elongate-truncate conidia might be the Chalara state of it.Tadaeusz Kowalski obtained the anamorph in his cultures from ash petioles. The conidia are formed from brown cylindrical phialides in sporodochial conidiomata looking as black irregular areas on the agar or natural substrate surface. Perhaps they can also be found here because of the presence of these conidia?
The apodiameter of 3 mm is erroneous, do you mean 0.3 mm?
Zotto
The elongate-truncate conidia might be the Chalara state of it.Tadaeusz Kowalski obtained the anamorph in his cultures from ash petioles. The conidia are formed from brown cylindrical phialides in sporodochial conidiomata looking as black irregular areas on the agar or natural substrate surface. Perhaps they can also be found here because of the presence of these conidia?
The apodiameter of 3 mm is erroneous, do you mean 0.3 mm?
Zotto
Javier Ormad,
30-12-2014 00:22
Re : Calycellina en hojas de Malus domestica
En los especimenes mostrados, llegan a 0.5 mm, pero creo haber encontrado de mayor tamaño.
La verdad es que las medidas esporales recopiladas llegan hasta 10 x 3 micras, pero en mi recolección de 11-16 x 3-4 micras; es algo, por lo menos, notorio. Tengo visto C. populina en Populus sp. y la macro es menos consistente. Está claro que practicamente lo que no cuadra son las medidas esporales, pero...... no se??
Saludos
La verdad es que las medidas esporales recopiladas llegan hasta 10 x 3 micras, pero en mi recolección de 11-16 x 3-4 micras; es algo, por lo menos, notorio. Tengo visto C. populina en Populus sp. y la macro es menos consistente. Está claro que practicamente lo que no cuadra son las medidas esporales, pero...... no se??
Saludos
Hans-Otto Baral,
30-12-2014 10:15
Re : Calycellina en hojas de Malus domestica
yes, usually spore i length is given as 8-12 for C. populina. But Ellis & Ellis say 10-14, and there you see the problem. maybe they mixed something, but these values overlap, and given that they all refer to the dead state, they do not offer a good taxonomic split.
I also noticed macroscopic variation but cannot say for sure that a correlation with spore size exists. But it would take too much time to make up my mind.
Zotto
I also noticed macroscopic variation but cannot say for sure that a correlation with spore size exists. But it would take too much time to make up my mind.
Zotto