Nuevas citas de Epigloea Zukal en Espana.
The genus Epigloea Zukal comprises twelve species worldwide, seven of which were previously recorded from the Iberian Peninsula (Perez-Ortega & Barreno 2006). Epigloea lives in association with algal films and it is still unclear the specificity of the relationship of the fungus with the algae since it is common to find different algal species below the fungal ascomata. Although it was previously thought to be a lichen, modern works treat it as a highly adapted biotrophic parasitism (Dobbeler 1984). However it continues to be looked for by lichenologists, although collections of Epigloea are rare because due to its small size and its ephemeral nature it is commonly overlooked.
The genus was monographed by Dobbeler (1984) and species occurring in the Iberian Peninsula were treated in Perez-Ortega & Barreno (2006). Based on recent collections carried out in different areas of the Iberian Peninsula, I present here new records for three of the species known from the Iberian Peninsula, expanding their distribution ranges southwards.
Epigloea filifera Dobbeler
The specimens fit well with the descriptions found in the literature (Dobbeler 1984). Material from Burgos was found on algal films on soil overgrowing unidentified Cladonia mats in Quercus rotundifolia forest; other lichen species members also of the this terricolous community were Cetraria aculeata, Cladonia convoluta, Diploschistes diacapsis, Toninia sedifolia and Xanthoparmelia pseudohungarica. Specimens from Madrid were richer and were collected on algal films on the top of siliceous boulders, overgrowing bryophytes and unidentified Cladonia squamules; other lichen species growing on the top of these boulders and within bryophytes were Polychidium muscicola and Massalongia carnosa. Up to now, E. filifera was only known in the Iberian Peninsula from Asturias. These records represent floristic novelties for Castilla y Leon and Madrid.
Specimens examined: SPAIN: Castilla y Leon, Burgos: Riocavado de la Sierra, 5 km NE of Riocavado, thallus slope, 1353 m, 42[degrees] 9' 54"N, 3[degrees] 12' 29" W, 22-V-2006, S. Perez-Ortega, (herb. Perez-Ortega). Madrid: El Escorial, granitic boulders around the Silla de Felipe II, 1069 m, 40[degrees] 33'59" N, 4[degrees] 9' 14" W, 1-X-2008, S. Perez-Ortega & M. Vivas, (herb. Perez-Ortega).
Epigloea cf. medioincrassata (Grumman) Dobbeler
The specimen was collected on algal films overgrowing bryophytes (Grimmia sp.) on granitic boulders. The material shows some divergent characters regarding the descriptions provided in Dobbeler (1994). Ascospores are 3 to 4-septate and slightly smaller: 20-27 x 3.5-5.5 [micro]m vs. (18-)24-33(-38) x 3.5-5 [micro]m. However, the most striking differences between typical E. medioincrassata and our specimens are the lack of appendages at the end of the ascospores and that these ends are not pointed but roundish. Material is too scant for a more careful study, preventing further comparisons. New collections of this deviant taxon will decide whether it represents a new taxon or not. In the Iberian Peninsula, E. medioincrassata was known so far from Asturias. New to Castilla y Leon.
Specimens examined: SPAIN: Castilla y Leon, Avila: Puerto de Mijares, granitic outcrops close to the road AV-901, 1440-1570 m, 40[degrees]19'43" N, 4[degrees]49'22", 28-IV-2008, S. Perez-Ortega et al. (herb. Perez-Ortega).
Epigloea soleiformis Dobbeler
This species is likely the most frequently collected species of the genus. It was found growing on algal films, which were covering bryophytes and squamules of the primary thallus of an unidentified Cladonia species growing in the north side of a granitic boulder, forming large patches. Previously known only from Asturias in the Iberian Peninsula (Perez-Ortega & Barreno 2006). New to Castilla y Leon.
Specimens examined: SPAIN: Castilla y Leon, Burgos: Quintanar de la Sierra, siliceous boulders close to Arlanza river, 1196 m, 41[degrees]59'59" N, 3[degrees]0'57" W, 7 VII 2007, S. Perez-Ortega (herb. Perez-Ortega).
I am very obliged to the project ANT-COMPLEX (CGL2006-12179-CO2-01, MEC, Spain) for support.
Dobberler, P. 1984. Symbiosen zwischen Gallertalgen und Gallertpilzen der Gattung Epigloea (Ascomycetes). Beih. Nova Hedwigia 79: 203-239.
Perez-Ortega, S. & Barreno, E. 2006. The genus Epigloea Zukal in the Iberian Peninsula. Nova Hedwigia 83: 523-531.
Departamento de Biologia Vegetal II, Facultad de Farmacia, Universidad Complutense de Madrid, Plaza Ramon y Cajal s/n, E-28040 Madrid, Spain. email@example.com
Recibido: 11 febrero 2009. Aceptado: 6 marzo 2009
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