@article{fdi:010069359, title = {{M}olecular phylogenies support taxonomic revision of three species of {L}aurencia ({R}hodomelaceae, {R}hodophyta), with the description of a new genus}, author = {{R}ousseau, {F}. and {G}ey, {D}. and {K}urihara, {A}. and {M}aggs, {C}. {A}. and {M}artin-{L}escanne, {J}. and {P}ayri, {C}laude and de {R}eviers, {B}. and {S}herwood, {A}. {R}. and {L}e {G}all, {L}.}, editor = {}, language = {{ENG}}, abstract = {{T}he systematics of the {L}aurencia complex was investigated using a taxon-rich data set including the chloroplast ribulose-1,5-bisphosphate carboxylase/oxygenase large subunit (rbc{L}) gene only and a character-rich data set combining mitochondrial cytochrome oxidase 1 ({COI}-5{P}), the rbc{L} marker, and the nuclear large subunit of the ribosomal operon ({LSU}). {B}ayesian and {ML} analyses of these data sets showed that three species hitherto placed in the genus {L}aurencia {J}.{V}. {L}amour. were not closely related to {L}aurencia s. str. {L}aurencia caspica {Z}inova & {Z}aberzhinskaya was the sister group of the remaining {O}smundea {S}tackh. species, {L}. crustiformans {M}c{D}ermid joined {P}alisada and {L}. flexilis {S}etch. consisted of an independent lineage. {I}n light of these results a new genus, {O}helopapa {F}. {R}ousseau, {M}artin-{L}escanne, {P}ayri & {L}. {L}e {G}all gen. nov., is proposed to accommodate {L}. flexilis. {T}his new genus is morphologically characterized by four pericentral cells in each vegetative axial segment; however, it lacks 'corps en cerise' in cortical cells and secondary pit connections between cortical cells, which are characteristic of {L}aurencia. {T}hree novel combinations are proposed to render the classification closer to a natural system: {O}helopapa flexilis ({S}etch.) {F}. {R}ousseau, {M}artin-{L}escanne, {P}ayri & {L}. {L}e {G}all comb. nov., {O}smundea caspica ({Z}inova & {Z}aberzhinskaya) {M}aggs & {L}. {M}. {M}c{I}vor comb. nov. and {P}alisada crustiformans ({M}c{D}ermid) {A}.{R}. {S}herwood, {A}. {K}urihara & {K}.{W}. {N}am comb. nov.}, keywords = {{L}aurencia caspica ; {L}aurencia crustiformans ; {L}aurencia flexilis ; {O}helopapa ; {O}smundea}, booktitle = {}, journal = {{E}uropean {J}ournal of {T}axonomy}, volume = {269}, numero = {}, pages = {1--19}, ISSN = {2118-9773}, year = {2017}, DOI = {10.5852/ejt.2017.269}, URL = {https://www.documentation.ird.fr/hor/fdi:010069359}, }