Message - 7th IAL Symposium
Message - 7th IAL Symposium
Message - 7th IAL Symposium
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Lichen: from genome to ecosystem in a changing world<br />
3A-P<br />
(3A-P18) Submission ID: <strong>IAL</strong>0201-00002<br />
DIVERSITY AND PHYLOGENY OF THE GENUS LOBARIELLA (LOBARIACEAE)<br />
Moncada Cardenas B. 1 , Betancourt L. 1 , Lücking R. 2<br />
1 Licenciatura en Biologia, Universidad Distrital Francisco Jose de Caldas, Bogota, Distrito Capital, Colombia<br />
2 Department of Botany, The Field Museum, Chicago, United States<br />
The lichen genus Lobariella is characterized within the family Lobariaceae by a white-tomentose underside<br />
lacking cyphellae, pseudocyphellae, and veins, but instead having pseudocyphellae on the upper surface,<br />
resembling those of Parmelia. For some time, the genus was considered to include five species: Lobariella<br />
botryoides (Yoshim. & Arv.) Moncada & Lücking, L. crenulata (Hook. in Kunth) Yoshim. (type species), L. exornata<br />
(Zahlbr.) Yoshim., L. pallida (Hook. f.) Moncada & Lücking, and L. subexornata (Yoshim.) Yoshim. The latter<br />
four species have a green photobiont, whereas L. botryoides has cyanobacterial photobiont. In the frame of a<br />
survey of Lobariaceae in Colombia and adjacent areas, we came across three further, undescribed species of<br />
this genus: L. sipmanii Moncada, Betancourt & Lücking, with cyanobacterial photobiont and otherwise morphologically<br />
intermediate between L. crenulata and L. pallida; L. soredians Moncada, Betancourt & Lücking spec.<br />
nova., similar to L. botryoides but with marginal soredia rather than laminal isidia becoming sorediate, and L.<br />
flavomedullosa Moncada, Betancourt & Lücking spec. nova, close to L. crenulata but with pale yellow medulla. A<br />
molecular phylogeny based on nuclear ITS confirms the validity of these species and also suggests that Lobariella<br />
should be retained at the generic level, along with further division of Lobaria s.lat. into three to four additional<br />
genera. Lobariella is an exclusively neotropical genus and found at mid to high elevations in rain and cloud forest<br />
as well as paramo. Lobariella botryoides, L. pallida, L. sipmanii, and L. soredians are more characteristic of upper<br />
montane cloud forest and paramo vegetation, whereas the other four species, all with green photobiont, are<br />
more typically found in montane rain and cloud forest. Each of the eight recognized species is illustrated and a<br />
key to all species is presented.<br />
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