Original paper
Umbilicaria kappeni (Umbilicariaceae) a new lichen species from Antarctica with multiple mechanisms for the simultaneous dispersal of both symbionts
Sancho, Leopoldo G.; Schroeter, B.; Valladares, F.
Nova Hedwigia Band 67 Heft 3-4 (1998), p. 279 - 288
28 references
published: Dec 9, 1998
DOI: 10.1127/nova.hedwigia/67/1998/279
ArtNo. ESP050006703000, Price: 29.00 €
Abstract
The lichen Umbilicaria kappeni Sancho, Schroeter & Valladares is described as new from the western Antarctica. In the Antarctic the genus Umbilicaria is represented by eight species so far. Sexual reproduction is common in only two of these species, while thalloconidia are present in seven of them. Umbilicaria kappeni does neither have thalloconidia nor apothecia but exhibits a wide variety of asexual propagules: soredia, adventive lobes, thallyles. The most interesting feature of these propagules in comparison to the thalloconidia is their capability for the simultaneous propagation of the two symbionts and not only of the mycobiont. Umbilicaria kappeni is distributed in the South Orkney Islands, South Shetland Islands and the western side of the Antarctic Peninsula.
Keywords
Umbilicariaceae • Umbilicaria kappeni sp. nova. - Antarctica • lichens • taxonomy • reproduction • morphology • biogeography