The conspecificity ofPlagiochila killarniensisPearson andP. bifaria(Sw.) Lindenb. (Hepatieae)

Heinrichs, Jochen; Grolle, Riclef; Drehwald, Uwe

doi:10.1179/jbr.1998.20.2.495

Cited by 23 publications

(8 citation statements)

References 3 publications

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“…Our results indicate that morpholocial species concepts (e.g. Heinrichs et al. , 1998b; Heinrichs, 2002; Rycroft et al.…”

Section: Resultsmentioning

confidence: 57%

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Biogeography ofPlagiochila(Hepaticae): natural species groups span several floristic kingdoms

Groth¹,

Lindner²,

Wilson³

et al. 2003

Journal of Biogeography

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Aim This paper presents a synthesis of our recent results regarding the biogeography of Plagiochila using a molecular approach, and documents intercontinental ranges within this largest genus of the hepatics. Methods A maximum likelihood analysis of sixty‐one nrITS sequences of Plagiochila was performed and the molecular topology obtained was compared with morphological, phytochemical and geographical data. Results Our molecular data set allowed the identification of eleven Plagiochila sections, the majority of which cover at least two floristic kingdoms. Seven sections have species in Europe (sect. Arrectae, Carringtoniae, Fuscoluteae, Glaucescentes, Plagiochila, Rutilantes, Vagae). Plagiochila species from Atlantic Europe are usually close to or conspecific with neotropical taxa, whereas species widespread in Europe are closely related to Asian ones and not to those in the Neotropics. Plagiochila sect. Arrectae represents a neotropical – Atlantic European clade. The section is not closely related – as has often been suggested – to the morphologically similar sect. Zonatae from Asia and western North America. Sequence data show that the African P. integerrima and the neotropical P. subplana are members of the Asian sect. Cucullatae (sect. Ciliatae, syn. nov.), which becomes pantropical in distribution. An ITS sequence of P. boryana from Uganda confirms the Afro‐American range of the primarily neotropical sect. Hylacoetes. Similarities in sporophyte morphology between the sect. Cucullatae and sect. Hylacoetes are the result of parallel evolution. Main conclusions Our results indicate that intercontinental ranges at section and species level are common in Plagiochila. Carl's (1931) subdivision of Plagiochila into sections restricted to one floristic kingdom is outdated. Biogeographical patterns in Plagiochila are not dissimilar to those of other groups of bryophytes but elucidation of the geographical ranges of the taxa requires a molecular approach. Contrary to earlier belief, most Plagiochila species from Atlantic Europe do not have close relatives in Asia but are conspecific with or closely related to species from tropical America.

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“…Our results indicate that morpholocial species concepts (e.g. Heinrichs et al. , 1998b; Heinrichs, 2002; Rycroft et al.…”

Section: Resultsmentioning

confidence: 57%

“…Lindenb. However, Heinrichs et al. (1998a,b demonstrated that P. killarniensis is conspecific with the neotropical‐montane P. bifaria (Sw.) Lindenb.…”

Section: Plagiochila Sect Arrectae and Sect Zonataementioning

confidence: 99%

Biogeography ofPlagiochila(Hepaticae): natural species groups span several floristic kingdoms

Groth¹,

Lindner²,

Wilson³

et al. 2003

Journal of Biogeography

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“…Recent investigations (Heinrichs et al 1998bHeinrichs et al in press) indicate close relationships between the Plagiochilā oras of Atlantic Europe (including Macaronesia) and the Neotropics. For the moment, the change of determination of the Macaronesian Plagiochila dubia to P. virginica reduces the European hepatic¯ora by one Neotropical element.…”

Section: Discussionmentioning

confidence: 94%

Plagiochila virginica A.Evans rather than P. dubia Lindenb. & Gottsche occurs in Macaronesia; placement in sect. Contiguae Carl is supported by ITS sequences of nuclear ribosomal DNA

Heinrichs¹,

Pröschold

Renker³

et al. 2002

Plant Systematics and Evolution

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Plagiochila dubia Lindenb. & Gottsche is reduced to a synonym of the Neotropical P. patula (Sw.) Lindenb. Specimens from the Canary Islands and Madeira proved to belong to the eastern North American P. virginica A.Evans, new to Europe. Phylogenetic analyses of the internal transcribed spacer regions (ITS1-5.8S-ITS2) of nuclear ribosomal DNA of ten Plagiochila species produced four independent lineages that are well supported by all bootstrap analyses (maximum likelihood, maximum parsimony, and distance). These lineages correspond with the Plagiochila sections Arrectae, Contiguae, Cucullatae and Glaucescentes. Spruce's`R ami¯orae'' and``Cauli¯orae'' may no longer be regarded as monophyletic units of Plagiochila.

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“…was presented by Heinrichs et al 7 and recent molecular, morphological and phytochemical evidence support a broad species concept of P. bifaria. 8 P. maderensis is a Madeiran endemic species that was formerly synonymized with P. spinulosa (Dicks.)…”

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confidence: 82%

Comparison of the essential oil composition of fourPlagiochila species:P. bifaria,P. maderensis,P. retrorsa andP. stricta

et al. 2005

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Essential oils isolated by distillation-extraction from P. bifaria, P. maderensis, P. retrorsa and P. stricta, collected on Madeira, were analysed by GC and GC-MS. Methyl everninate (1-35%), peculiaroxide (13-16%) and enteudesm-4(15)-ene-6-one (9-19%) were the main components in all P. bifaria specimens analysed. Terpinolene (34-60%) dominated the oils isolated from P. maderensis specimens. β β β β β-Phellandrene (16-46%) was the main component of two of the three specimens of P. retrorsa, allo-ocimene (15%), terpinolene (13%), peculiaroxide (12%) and neo-allo-ocimene (10%) being the main components of the third specimen. P. stricta oils were dominated by peculiaroxide (11-21%), allo-ocimene (7-19%), bicyclogermacrene (4-17%), neo-allo-ocimene (4-11%) and spathulenol (2-14%). Essential oil cluster analysis showed a high degree of similarity between three of the four species studied, the least correlated being P. maderensis oils.

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The conspecificity ofPlagiochila killarniensisPearson andP. bifaria(Sw.) Lindenb. (Hepatieae)

Cited by 23 publications

References 3 publications

Biogeography ofPlagiochila(Hepaticae): natural species groups span several floristic kingdoms

Biogeography ofPlagiochila(Hepaticae): natural species groups span several floristic kingdoms

Plagiochila virginica A.Evans rather than P. dubia Lindenb. & Gottsche occurs in Macaronesia; placement in sect. Contiguae Carl is supported by ITS sequences of nuclear ribosomal DNA

Comparison of the essential oil composition of fourPlagiochila species:P. bifaria,P. maderensis,P. retrorsa andP. stricta

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