Distribution and synonymy of Plagiochila punctata (Taylor) Taylor, with hypotheses on the evolutionary history of Plagiochila sect. Arrectae (Plagiochilaceae, Hepaticae)

Heinrichs, Jochen; Lindner, Melanie; Groth, Henk; Renker, Carsten

doi:10.1007/s00606-004-0220-5

Cited by 30 publications

(15 citation statements)

References 38 publications

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“…Our calculations indicate we can confidently reject the lower estimates of 4,500-5,000 (Forrest et al 2006) and 5000 (Crosby 1980;Gradstein et al 2001;Gradstein & Costa 2003;and Crandall-Stotler et al 2008). However, the slightly higher estimates of 5,000-6,000 (Heinrichs et al 2005;Gradstein & Ilkiu-Borges 2009), 6,000 (Schofield 1985;Groombridge & Jenkins 2002;Heinrichs et al 2007) and 6,500-7,000 (Schuster 1984) fall within the confidence limits on our estimate, as does the slightly higher estimate of 6,000-8,000 presented by Crandall-Stotler & Stotler (2000). The upper boundary on our confidence interval is similar to the Pearson (1995) estimate of 9,000 liverwort species.…”

Section: Discussionmentioning

confidence: 52%

“…In arriving at their own estimate of 223,300 they tested the synonymy rates predicted by all recent estimates against rates empirically derived from a sample of taxa for which they assumed synonymy rates are relatively accurate. This method was further revised by Wortley & Scotland (2004) with an increased sample size Estimate Author/s 4,500-5,000 Forrest et al (2006) 5,000 Crosby (1980); Gradstein et al (2001); Gradstein & Costa (2003);Crandall-Stotler et al (2008) 5,000-6,000 Heinrichs et al (2005); Gradstein & Ilkiu-Borges (2009) 6,000 Schofield (1985); Heinrichs et al (2007); Groombridge & Jenkins 20026,500-7,000 Schuster (1984 6,000-8,000 Crandall-Stotler & Stotler (2000) 9,000 Pearson (1995) resulting in an overall synonymy rate of 65.9%, translating to 346,527 species of seed plants. We emulate this approach here.…”

Section: Methods the Impact Of Synonymymentioning

confidence: 99%

“…We assume, for this paper, that most contemporary species concepts resemble, at some level, "units of evolution" and that the most commonly applied approach to delimiting species of bryophytes is morphological (Shaw 2008). However, over the last decade, biological and phylogenetic concepts have become increasingly employed in recent liverwort systematic papers (e.g., Heinrichs et al 2005;Heinrichs et al 2009). Because it is impossible to discern, in the vast majority of cases, which concept has been employed, we accept diversity estimates to be broadly reflecting a mixture of concepts.…”

Section: ) Will the Number Of Species Be Reduced By The High Rate Ofmentioning

confidence: 99%

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Early Land Plants Today (ELPT): How many liverwort species are there?

Konrat¹,

Söderström²,

Renner³

et al. 2014

Phytotaxa

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Estimates of extant liverwort species range from 4,500 to 9,000, with estimates in the past decade converging on 5,000 to 6,000. Potential problems and pitfalls of deriving species estimates are addressed, including binomial accumulation, the impact of synonymy, taxonomic inflation, the impact of unrevised species-rich genera, species concepts and cryptic species. We present a revised mean estimate of 7,500 for the number of liverwort species based on estimating rates of synonymy in a sample of recently monographed and revised taxa. This estimate does not include infraspecific names and may underestimate global diversity as a result. We also present a databased estimate of about 8,500 species derived from the Early Land Plants Today data set. We argue higher estimates are supported by: 1) the number of published species has not reached a plateau and new species continue to be discovered; 2) not all regions have been thoroughly explored and with equal intensity, with survey effort being historically biased toward northern temperate regions; 3) synonymy rates are not uniform across taxonomic groups; 4) novel discovery of species outpaces new species derived from elevation in rank (taxonomic inflation); and 5) species numbers are not necessarily distorted by large unrevised genera. A standardized global worldwide liverwort checklist with strong community participation coupled with the critical need for ongoing monographs and revisions, will aid in arriving at a clearer estimates of liverwort diversity. We promote and encourage interest in the topic using an evidence-based approach and quantitative data.

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Section: Discussionmentioning

confidence: 52%

Section: Methods the Impact Of Synonymymentioning

confidence: 99%

Section: ) Will the Number Of Species Be Reduced By The High Rate Ofmentioning

confidence: 99%

See 1 more Smart Citation

Early Land Plants Today (ELPT): How many liverwort species are there?

Konrat¹,

Söderström²,

Renner³

et al. 2014

Phytotaxa

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“…Arrectae Carl (Heinrichs et al, 2004b). As is the case with the latter groups, the Fuscoluteae also have their centre of diversity in moist neotropical forests above 2000 m. It has already been suggested that late Miocene uplift of the Andes (GregoryWodzicki, 2000) and the resulting more humid climate may be responsible for the diversification of these montane species groups of Plagiochila (Heinrichs et al, , 2005b.…”

Section: Discussionmentioning

confidence: 90%

The systematic position ofPlagiochila(Jamesoniella)dependula(Jungermanniopsida) inferred from nrITS sequences and morphology, with notes on its differentiation fromPlagiochila fuscolutea

Heinrichs¹,

Wilson²,

Feldberg³

et al. 2005

Journal of Bryology

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Based on morphology and phylogenetical analyses of nrITS sequences, the Andean endemic Plagiochila (Jamesoniella) dependula is placed in Plagiochila sect. Fuscoluteae. Perianths, oil bodies and sporophytes are described for the first time. Morphologically, P. dependula is characterized by entire, dorsally mostly shortly decurrent, laterally appressed, reniform leaves which are covered by irregular papillae and membranous wax platelets, papillose oil bodies, intercalary androecia with opposite bracts that overlap dorsally, a plagiochilid perianth with an entire mouth, a 250 mm thick capsule wall with thickenings in all layers, large 1-4 celled spores, and bispiral elaters. Morphotypes of Plagiochila fuscolutea with laterally appressed leaves differ from P. dependula by an at least moderately decurrent, broad dorsal leaf base, a ¡smooth upper leaf surface, and by its often toothed leaf apices. Plagiochila wolframii is placed in the synonymy of P. fuscolutea. Maximum likelihood and parsimony analyses of 29 Plagiochila ITS sequences resolve P. dependula in a well-supported clade with several other representatives of P. sect. Fuscoluteae. Branch lengths within sect. Fuscoluteae point to a sudden diversification. Accessions of P. heterophylla s.str. from Great Britain (formerly known as P. atlantica) and Costa Rica form an unsupported monophyletic lineage.

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“…Jones (1962) doubted the occurrence of this predominantly European species in sub-Saharan Africa thinking that the record was probably based on a misidentification. The presence of this Atlantic European species was confirmed in tropical East Africa by Heinrichs et al (2005), who also recorded its presence from Central and South America. **Targionia lorbeeriana Müll.Frib.…”

Section: Interesting Records Of Non-epiphyllous Speciesmentioning

confidence: 82%

A contribution to the knowledge of epiphyllous bryophytes of Bioko Island (Equatorial Guinea), including additional remarks on non-epiphyllous species

Müller¹,

Pócs²

2007

Journal of Bryology

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A collection of epiphyllous bryophytes from Bioko Island was investigated. It contained 57 epiphyllous bryophytes, comprising 55 hepatics and two mosses. Three taxa, Cololejeunea eustacei Pó cs, Colura calderae Pó cs and Lejeunea halei Robinson subsp. africana Pó cs, are new to science. Cololejeunea papilliloba Steph. is new to Africa, five species of hepatics are new to West Africa, and an additional 31 species of hepatics are newly reported from Bioko Island. The second part of the paper deals with records of non-epiphyllous collections. Fourteen species are reported for the first time for Bioko Island. Actinodontium dusenii Broth. is made a synonym of Actinodontium streptopogoneum Broth. The following new combination is proposed: Wijkia rigidicaule (Mü ll.Hal. ex Broth.) Frank Mü ll., comb. nov. (Basionym: Acanthocladium rigidicaule Mü ll.Hal. ex Broth.). ). This channel is only 32 km across at its narrowest point, and only 60 m deep at its greatest depth. The island belongs to the climate zone of the ever-wet tropics, which is characterized by uniform temperatures, high rainfall, and the absence of a cold season. Bioko's high Journal of Bryology (2007) 29: 81-94 # British Bryological Society 2007

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Distribution and synonymy of Plagiochila punctata (Taylor) Taylor, with hypotheses on the evolutionary history of Plagiochila sect. Arrectae (Plagiochilaceae, Hepaticae)

Cited by 30 publications

References 38 publications

Early Land Plants Today (ELPT): How many liverwort species are there?

Early Land Plants Today (ELPT): How many liverwort species are there?

The systematic position ofPlagiochila(Jamesoniella)dependula(Jungermanniopsida) inferred from nrITS sequences and morphology, with notes on its differentiation fromPlagiochila fuscolutea

A contribution to the knowledge of epiphyllous bryophytes of Bioko Island (Equatorial Guinea), including additional remarks on non-epiphyllous species

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