Felipes leucopellaeus (Ach.) Frisch & G. Thor

in Frisch & al., Taxon, 63: 738, 2014. Basionym: Spiloma melaleucum var. leucopellaeum Ach. - Lichenogr. Univ.: 138, 1810.
Synonyms: Arthonia leucopellaea (Ach.) Almq.; Arthonia marmorata Nyl.; Arthonia melaleuca sensu Malme; Arthonia schaereri A. Massal.; Melaspilea associata Norman; Trachylia leucopellaea (Ach.) Eitner
Distribution: N - Frl. C - Sar (Cossu 2013).
Description: Thallus crustose, white to pale yellowish white, smooth to granulose or arachnoid, sometimes inapparent, the thallus hyphae K/I-. Apothecia 1-2 mm across, irregularly rounded to weakly lobed or star-shaped, sometimes short-lirelliform, with a dark brown to black, but more or less grey pruinose disc, and a somewhat arachnoid, slightly prominent, whitish marginal zone. Epithecium brown, K+ yellowish green; hymenium colourless to pale yellowish brown, 25-60 μm high; paraphysoids brown-walled, 1-1.5 μm thick in lower part, theapical cells up to 2.5 μm wide, without a dark cap; hypothecium dark brown. Asci 8-spored, broadly clavate, semi-fissitunicate, with a large apical dome, a distinct ocular chamber, anda K/I+ blue ring. Ascospores 3-4-septate, hyaline (but overmature spores often brownish), oblong-ovoid, (9-)12-17(-19) x 3-5 µm, with almost equal cells. Photobiont trentepohlioid. Spot tests: thallus K+ pale yellow to brownish orange, C-, KC-, P-, UV-. Chemistry: two unknown substances in thallus.
Note: on bark of conifers in old-growth forests under suboceanic climatic conditions; widespread in the temperate to boreal zones of the Holarctic region, in the Alps mainly in the montane belt, but lacking in the central Alps with more continental climate conditions. The species is included in the Italian red list of epiphytic lichens as “Critically Endangered” (Nascimbene & al. 2013c).
Growth form: Crustose
Substrata: bark
Photobiont: Trentepohlia
Reproductive strategy: mainly sexual
Most common in areas with a humid-warm climate (e.g. most of Tyrrenian Italy)

Commonnes-rarity: (info)

Alpine belt: absent
Subalpine belt: absent
Oromediterranean belt: absent
Montane belt: extremely rare
Submediterranean belt: absent
Padanian area: absent
Humid submediterranean belt: absent
Humid mediterranean belt: absent
Dry mediterranean belt: absent

pH of the substrata:

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Poleotolerance:

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Altitudinal distribution:

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Predictive model

Leif Stridvall - Source: http://www.stridvall.se/la/galleries.php (Courtesy: Anita Stridvall)



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (5120)
2003/01/23



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (5120)
2001/11/21


Andres Saag; Owner: University of Tartu


Leif Stridvall - Source: http://www.stridvall.se/lichens/gallery/
Courtesy: Anita Stridvall


Leif Stridvall - Source: http://www.stridvall.se/lichens/gallery/
Courtesy: Anita Stridvall


Leif Stridvall - Source: http://www.stridvall.se/lichens/gallery/
Courtesy: Anita Stridvall


Photo uploaded by P. Cannon, CC BY-SA NC Source: http://fungi.myspecies.info/file/15247


Photo uploaded by P. Cannon, CC BY-SA NC Source: http://fungi.myspecies.info/file/16440


Redinger, K. (1938) Arthoniaceae, Graphidaceae . In Kryptogamen-Flora von Deutschland, Österreich und der Schweiz. Band 9, 2 Abt., Part 1 (G. L. Rabenhorst, ed.): 181–404. Leipzig: Borntraeger