<i>Ephemerum hibernicum</i>sp. nov. (Bryopsida: Ephemeraceae) from Ireland

Holyoak, David T.; Bryan, Virginia S.

doi:10.1179/037366805x52988

Cited by 9 publications

(7 citation statements)

References 3 publications

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“…hibernicum' are mainly distinct from those of E. sessile, but some individual plants are difficult to place on the basis of leaf characters. Indeed, there are few consistent differences between E. rutheanum and E. sessile other than the more strongly toothed leaves and better developed lamina in the leaf apex of the former taxon (Tables 1 and 2; Holyoak & Bryan, 2005). Differences between the tubers of E. rutheanum (as 'E.…”

Section: C) Plants Intermediate Between E Sessile and E Rutheanummentioning

confidence: 91%

“…Comparative studies have established that the same taxon was described by Holyoak & Bryan (2005) as E. hibernicum, a supposed new species from Ireland. There are no significant differences between them, so E. hibernicum is regarded as a synonym (see below).…”

Section: E Serratum Var Praecox Awhwalther and Molendomentioning

confidence: 94%

“…represent forms of E. serratum and E. minutissimum rather than a valid species (Holyoak, 2001b). An apparently undescribed taxon found in Ireland was named as E. hibernicum (Holyoak & Bryan, 2005) and later found in S. Wales. Bryan & Anderson (1957) carried out extensive studies on N. American Ephemerum and found considerable variability in the leaf characters of most species, often almost bridging the gaps between recognized species.…”

Section: Introductionmentioning

confidence: 99%

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Notes on taxonomy of some European species ofEphemerum(Bryopsida: Pottiaceae)

Holyoak¹

2010

Journal of Bryology

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Taxonomy of some European species of Ephemerum is reviewed. As in several other recent studies, E. minutissimum Lindb. is regarded as a distinct species from E. serratum (Hedw.) Hampe; it is recorded from N. America (by the newly designated lectotype and other specimens) and Turkey, in addition to Europe. E. serratum var. angustifolium Bruch & Schimp. may be a synonym of E. minutissimum; the costate forms E. serratum var. praecox A.W.H.Walther & Molendo and E. intermedium Mitt. in Braithw. are treated as synonyms of E. serratum s.str. Type specimens of E. stellatum H.Philib. are described, a lectotype is designated and it is placed as a synonym of E. serratum s.str. E. hibernicum Holyoak & V.S.Bryan is regarded as a synonym of E. rutheanum Schimp. in Ruthe. The latter is shown to be a rare, European endemic taxon with modern records from Ireland, S. Wales, Germany and The Netherlands, and old records from France and W. Poland; a lectotype is designated. Forms intermediate between E. sessile (Bruch.) Mü ll.Hal. and the N. American E. crassinervium (Schwä gr.) Hampe occur in several countries in W. Europe, some of them indistinguishable from some of the American plants; forms intermediate between E. sessile and E. rutheanum are recorded from S. Portugal and (rarely) Ireland. Differences between E. crassinervium, E. sessile and E. rutheanum in characters of leaves, tubers and capsules are shown to be slight, with considerable overlap. Hence all three taxa are treated as subspecies of E. crassinervium. A revised key to European Ephemerum and Micromitrium is presented.

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Section: C) Plants Intermediate Between E Sessile and E Rutheanummentioning

confidence: 91%

Section: E Serratum Var Praecox Awhwalther and Molendomentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

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Notes on taxonomy of some European species ofEphemerum(Bryopsida: Pottiaceae)

Holyoak¹

2010

Journal of Bryology

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“…Holyoak & V.S. Bryan (Hill et al, 1994;Holyoak, 2001;Holyoak & Bryan, 2005), the liverworts Riccia canaliculata Hoffm., R. cavernosa Hoffm. and R. huebeneriana Lindenb.…”

Section: Descriptionmentioning

confidence: 96%

“…It is unsurprising therefore that the first detailed systematic survey of reservoirs in Ireland (Holyoak, 2001;Holyoak & Bryan, 2005) yielded two new species of Ephemerum and numerous new records for these reservoir specialists. More remarkably, in a similar detailed survey of reservoir bryophytes in northern England, Hodgetts (2003) reported that much of the Physcomitrium-like material growing at Lindley Wood Reservoir in 2001 and 2003 appeared to be a hybrid between P. sphaericum and Aphanoregma patens.…”

Section: Descriptionmentioning

confidence: 97%

Ephemerella readeriMüll. Hal. (Physcomitrella readeri(Müll. Hal.) I.G. Stone & G.A.M. Scott, Funariidae, Bryophyta): a genus and species new to Europe

Hooper

Duckett

Cuming

et al. 2010

Journal of Bryology

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A morphological and molecular analysis of a Physcomitrella, collected from a reservoir margin in the north of England, revealed this to be P. readeri, a species new to Europe. The present study clarifies previous confusion over the taxonomy of P. readeri showing it to be clearly distinct in both sporophytic and gametophytic characters from P. patens and uniform across its world range from England to USA, Japan and Australasia. While phylograms of the ITS1 region from both the Physcomitrella species, Physcomitrium pyriforme (Hedw.) Bruch & Schimp., Enthosthodon attenuatus (Dicks.) Bryhn and Funaria hygrometrica Hedw., place the first two in separate clades, in ITS2 phylograms they occur as sister taxa. This, together with previous genealogical studies on the speciation history of the Physcomitrella-Physcomitrium species complex, and morphology, suggests that generic rank is appropriate for P. readeri. We therefore reinstate the original name Ephemerella readeri Mü ll. Hal. Recent records at several reservoirs in England indicate that E. readeri may be native to UK, though remarkable congruence in ITS1 with Australian plants also suggests recent arrival as an alternative possibility.

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