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- Title
Distribution and synonymy ofPlagiochila punctata(Taylor) Taylor, with hypotheses on the evolutionary history ofPlagiochilasect.Arrectae(Plagiochilaceae, Hepaticae).
- Authors
Heinrichs, J.; Lindner, M.; Groth, H.; Renker, C.
- Abstract
For a long time,Plagiochila(sect.Arrectae)punctata(Taylor) Taylor has been treated as an endemic of Atlantic Europe. Studies of larger specimen sets demonstrated that the species is widespread in mountainous regions of the Neotropics where it is known under several names includingP. stoloniferaLindenb.&Gottsche,P. choachinaGottsche andP. patzschkeiSteph. In tropical AfricaP. punctatais established asPlagiochila subalpinaSteph., nom. illeg. The sporophyte ofP. punctatais described for the first time, based on material from Costa Rica. A maximum likelihood analysis of a nrITS sequence alignment with sequences ofP. sects.Fuscoluteae(outgroup),Arrectae, andRutilantesas well as ofP. rubescens(Lehm.&Lindenb.) Lindenb. results in a tree with well bootstrap supportedArrectaeandRutilantesclades. ITS sequences ofPlagiochila punctatafrom the Comoros and Zaire are placed in an unsupported monophyletic lineage together withP. punctatasequences from the British Isles and Ecuador. The species is nested in a robust clade withP. spinulosa(Dicks.) Dumort. andP. strictaLindenb. The weak genetic separation of these three species indicates a recent diversification; the disjunct ranges may be the result of long range dispersal events.Plagiochila rubescensfrom southern South America is placed sister toP. sect.Arrectae. The latter section possibly originated from southern South American ancestors, diversified in tropical America after the uplift of the Andes and reached the Holarctics and tropical Africa by long range dispersal of diaspores.
- Subjects
PLAGIOCHILA; LIVERWORTS; PLAGIOCHILACEAE; LINEAGE; BRYOPHYTES; JUNGERMANNIALES
- Publication
Plant Systematics & Evolution, 2005, Vol 250, Issue 1/2, p105
- ISSN
0378-2697
- Publication type
Article
- DOI
10.1007/s00606-004-0220-5