TY - JOUR

T1 - Notes on the genus Punctelia in Denmark

AU - Christensen, Steen

AU - Søchting, Ulrik

PY - 2007

Y1 - 2007

N2 - Punctelia jeckeri (Roum.) Kalb was previously known as P. ulophylla (Ach.) van Herk & Aptroot. The taxon was described by Acharius (1810) as Parmelia caperata var. ulophylla. It was long overlooked or reduced to synonomy, i.a. with Parmelia subrudecta (Nyl.) Krog (e.g. Hale 1965). Krog (1982), when establishing the genus Punctelia, did not re-combine P. ulophylla, nor include it in the accompanying key. She probably considered it as a synonym of P. subrudecta. In a study on European Punctelia species with lecanoric acid, van Herk & Aptroot (2000) accepted the taxon and made the combination Punctelia ulophylla. The publication also included photographs and descriptions of P. ulophylla and related species as well as a key to the species. That paper gave rise to more regional papers on the group: Aptroot (2003) on North American species and Truong & Clerc (2003) on the Swiss species. P. subrudecta and P. jeckeri (as P. ulophylla) have also been recognized in the recent British flora by Dobson (2005), which includes colour photographs of both species. Recently Crespo et al. (2004) and Thell et al. (2005) showed that P. subrudecta and P. ulophylla were genetically distinct. Kalb (2007) discovered an older name at species level, proposed the combination Punctelia jeckeri, and lectotypified the name. As a preparatory work to a forthcoming revision of the Danish lichen checklist (Søchting & Alstrup 2007) it was decided to examine the Danish material of the genus Punctelia.

AB - Punctelia jeckeri (Roum.) Kalb was previously known as P. ulophylla (Ach.) van Herk & Aptroot. The taxon was described by Acharius (1810) as Parmelia caperata var. ulophylla. It was long overlooked or reduced to synonomy, i.a. with Parmelia subrudecta (Nyl.) Krog (e.g. Hale 1965). Krog (1982), when establishing the genus Punctelia, did not re-combine P. ulophylla, nor include it in the accompanying key. She probably considered it as a synonym of P. subrudecta. In a study on European Punctelia species with lecanoric acid, van Herk & Aptroot (2000) accepted the taxon and made the combination Punctelia ulophylla. The publication also included photographs and descriptions of P. ulophylla and related species as well as a key to the species. That paper gave rise to more regional papers on the group: Aptroot (2003) on North American species and Truong & Clerc (2003) on the Swiss species. P. subrudecta and P. jeckeri (as P. ulophylla) have also been recognized in the recent British flora by Dobson (2005), which includes colour photographs of both species. Recently Crespo et al. (2004) and Thell et al. (2005) showed that P. subrudecta and P. ulophylla were genetically distinct. Kalb (2007) discovered an older name at species level, proposed the combination Punctelia jeckeri, and lectotypified the name. As a preparatory work to a forthcoming revision of the Danish lichen checklist (Søchting & Alstrup 2007) it was decided to examine the Danish material of the genus Punctelia.

M3 - Journal article

VL - 19

SP - 13

EP - 16

JO - Graphis Scripta

JF - Graphis Scripta

SN - 0901-7593

ER -