Cetrelia olivetorum (Nyl.) W.L. Culb. & C.F. Culb.

Farkas, Edit, Biró, Bernadett, Varga, Nóra, Sinigla, Mónika & Lőkös, László, 2021, Analysis of lichen secondary chemistry doubled the number of Cetrelia W. L. Culb. & C. F. Culb. species (Parmeliaceae, lichenised Ascomycota) in Hungary, Cryptogamie, Mycologie 20 (1), pp. 1-16 : 8-12

publication ID	https://doi.org/ 10.5252/cryptogamie-mycologie2021v42a1
DOI	https://doi.org/10.5281/zenodo.7815150
persistent identifier	https://treatment.plazi.org/id/038087B3-7A4B-1552-FCB9-F907C628FDB9
treatment provided by	Felipe
scientific name	Cetrelia olivetorum (Nyl.) W.L. Culb. & C.F. Culb.
status

Treatment

Cetrelia olivetorum (Nyl.) W.L. Culb. & C.F. Culb. View in CoL View at ENA

( Figs 2 View FIG ; 5D View FIG ; 10-12 View FIG View FIG View FIG )

It is the easiest of the four species to identify because olivetoric acid produces a characteristic, water repellent spot on the chromatographic plate, although a wider species concept previously ( Wirth 1980; Verseghy 1988, 1994, Smith et al. 2009) also was applied for specimens not containing olivetoric acid (here revised mostly as C. monachorum by HPTLC). Cortical atranorin is also present. This species forms soredia varying from fine to coarse, 36.4 ± 9.5 µm in Hungarian samples [versus 25-55 µm diam. inObermayer & Mayrhofer (2007)], while pseudocyphellae – if any – are rare on both upper and lower cortex and small (20-50 µm).

This species was collected from rocks (39%), but was mostly found on bark of Quercus (13%), Fagus (9%) and various unidentified trees (39%) at 100-800 m a.s.l. It is the second most frequent species of Cetrelia , known from a moderate 26 collections ( Figs 10 View FIG ; 11 View FIG ). Cetrelia olivetorum is proposed as vulnerable (VU) in the Hungarian red-list.