A revision of the genus Plocamium Lamouroux (Rhodophyta, Gigartinales) in New Zealand

South, G. Robin; Adams, Nancy M.

doi:10.2216/i0031-8884-18-2-120.1

Cited by 17 publications

(27 citation statements)

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“…Unfortunately, even when these reproductive features are present, they must be used with caution because it is not uncommon to find specimens with intermediate or even variable stichidial morphology, and tetrasporangium size has been found to vary with position within the stichidia, maturation or even latitude (noted here for P. lyngbyanum). Therefore, the other morphological attributes conventionally employed for distinguishing species of Plocamium in other areas of the world (colour, consistency, thallus width and section shape, number of ramuli per series, morphology and size of basal ramulus, habitat: see Simons, 1964;Womersley, 1971;South & Adams, 1979;Gabrielson & Scagel, 1989;Wynne, 2002) are a useful, although imperfect, complement for species discrimination in northern Europe.…”

Section: Molecular Analyses and Taxonomic Characters In Plocamiummentioning

confidence: 99%

“…Traditional taxonomy distinguishes between Plocamium species largely on the basis of the number of ramuli in alternating series, the morphology of the lower ramulus, the length, width, colour and consistency of the thallus, and the morphology and arrangement of tetrasporangial stichidia and cystocarps (Simons, 1964;Womersley, 1971;South & Adams, 1979;Gabrielson & Scagel, 1988). Biogeographical criteria, however, are also important, because many species or groups of species have a restricted distribution.…”

Section: Introductionmentioning

confidence: 99%

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A new taxonomic interpretation of the type ofPlocamium cartilagineum(Plocamiales, Florideophyceae) and its consequences

Cremades

Barreiro

Maneiro

et al. 2011

European Journal of Phycology

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A detailed study of the type specimen of Plocamium cartilagineum and other original material of European species of Plocamium revealed that the nomenclatural reorganization proposed by Saunders & Lehmkuhl in 2005 must be revised. The main consequences of the new interpretation are: (1) the use of Plocamium lyngbyanum to name their molecular entity EUR1 (previously considered to be equivalent to P. cartilagineum s.s.); and (2) adopting P. cartilagineum for their molecular entity EUR2, which renders P. subtile Ku¨tzing a taxonomic synonym. Using a combination of morphological, anatomical and molecular information (barcoding), we conclude that the colour and consistency of the thallus, the number of ramuli per series, the morphology and arrangement of the tetrasporangial stichidia, the length of the tetrasporangia, and the type of habitat are the most reliable characters of classical taxonomy for discriminating between the species of Plocamium occurring in northern Europe.

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Section: Molecular Analyses and Taxonomic Characters In Plocamiummentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A new taxonomic interpretation of the type ofPlocamium cartilagineum(Plocamiales, Florideophyceae) and its consequences

Cremades

Barreiro

Maneiro

et al. 2011

European Journal of Phycology

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“…40 species (in a recent review of the genus Wynne (2002) recognized 36), which are widely distributed throughout the world's oceans (South & Adams, 1979;Ricker, 1987;Gabrielson & Scagel, 1989;Adams, 1994;Womersley, 1994;Abbott, 1999). Most species are clearly defined anatomically (based on the number of ramuli in the alternating series, and features of the tetrasporangial stichidia and cystocarps) and biogeographically.…”

Section: Introductionmentioning

confidence: 99%

Molecular divergence and morphological diversity among four cryptic species ofPlocamium(Plocamiales, Florideophyceae) in northern Europe

Saunders¹,

Lehmkuhl

2005

European Journal of Phycology

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The Plocamiaceae currently includes two genera: the free-living Plocamium and the adelphoparasite, Plocamiocolax. Plocamium includes ca. 40 species that are widely distributed throughout the world's oceans. Most species are clearly defined anatomically and biogeographically; however, the type species Plocamium cartilagineum (type locality: considered northern Europe) is an exception. Although reportedly cosmopolitan in distribution, our investigations unequivocally indicate that there is substantial genetic diversity among isolates from different geographic locations and that there are at least eight divergent cryptic species currently included in P. cartilagineum. In this investigation we focused on populations of P. cartilagineum from northern Europe. We used a combination of molecular and morphological characters in order to establish boundaries between four cryptic species in this geographical area. Our molecular results not only resolve these four entities as distinct, but also indicate that they are among the most divergent of all Plocamium species worldwide. As a result, we now recognize P. cartilagineum, Plocamium subtile, Plocamium nanum sp. nov. and Plocamium maggsiae sp. nov. in northern Europe. A preliminary assessment of 'P. cartilagineum' in other geographical areas is provided.

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“…According to Womersley (1971) and South and Adams (1979) this is a widespread, mostly temperate species. The Fijian (and more recently, Tahitian) records are thus interesting and warrant molecular investigation to ascertain or deny their conspecificity with the New Zealand and Australian material.…”

Section: Habitat and Remarksmentioning

confidence: 99%

Marine algae from the Suva lagoon and reef, Fiji

N’Yeurt¹

2001

Aust. Systematic Bot.

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All enquiries and manuscripts should be directed to:An international journal devoted to t h e t a xo n o my, b i o g e o g r a p hy and evolution of all plant groups a u s t r a l i a n s y s t e m a t i c b o t a n y Australian Systematic Botany 14, 689-869 Abstract A total of 222 taxa (excluding Cyanophyceae and non-geniculate corallinales) are reported from the Suva Lagoon and Reef (Fiji), consisting of 71 Chlorophyceae, 24 Phaeophyceae and 127 Rhodophyceae. Of these, five represent new or undescribed species. The Suva flora is comparatively impoverished with only 222 species, although the relative percentage of the three classes is comparable to the overall Fijian flora, in particular with respect to the Rhodophyceae. M a r i n e a l g a e f r o m S u v a A . D . R . N ' Y e u r t A n t o i n e De R a m o n N ' Y e u r t S B 0 0 0 1 5

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A revision of the genus Plocamium Lamouroux (Rhodophyta, Gigartinales) in New Zealand

Cited by 17 publications

References 1 publication

A new taxonomic interpretation of the type ofPlocamium cartilagineum(Plocamiales, Florideophyceae) and its consequences

A new taxonomic interpretation of the type ofPlocamium cartilagineum(Plocamiales, Florideophyceae) and its consequences

Molecular divergence and morphological diversity among four cryptic species ofPlocamium(Plocamiales, Florideophyceae) in northern Europe

Marine algae from the Suva lagoon and reef, Fiji

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