@article{fdi:010065228, title = {{I}sland life - classification, speciation and cryptic species of {P}ycnandra ({S}apotaceae) in {N}ew {C}aledonia}, author = {{S}wenson, {U}. and {M}unzinger, {J}{\'e}r{\^o}me and {L}owry, {P}.{P}. and {C}ronholm, {B}. and {N}ylinder, {S}.}, editor = {}, language = {{ENG}}, abstract = {{P}ycnandra ({S}apotaceae), the largest endemic genus in {N}ew {C}aledonia, comprises 66 species classified in six subgenera. {W}e tested phylogenetic relationships and a proposed infrageneric classification by sampling 60 species for sequences of nuclear ribosomal {DNA} ({ETS}, {ITS}, {RPB}2) and plastid {DNA} (trn{H}-psb{A}) and nine morphological characters. {D}ata were analysed with {B}ayesian inference, parsimony jackknifing and lineage through time. {W}e recovered a phylogenetic tree supporting the recognition of six proposed subgenera ({A}chradotypus, {L}eptostylis, {P}ycnandra, {S}ebertia, {T}rouettia and {W}agapensia). {B}ecause a subgeneric classification is used, the nomenclature will be stable when the members are transferred to {P}ycnandra. {M}orphological traits were optimized in the {BEAST} analysis, adding evidence to earlier work that morphology has limited value for successfully diagnosing groups in {S}apotaceae. {W}e confirm a previously suspected case of cryptic species that exhibit the same morphological features and require the same abiotic conditions, but are distantly related in the phylogenetic tree. {W}e detected two possible new cases of cryptic sibling species that might warrant recognition. {A} slowdown in speciation rate in several genera has been suggested as evidence that {N}ew {C}aledonia was once submerged after rifting from {A}ustralia. {P}lotting lineages through time reveals two important intervals at 7.5-8.6{M}a and present to 1.5{M}a, when net molecular diversification within the genus was zero. {T}his indicates that the genus presently has reached a dynamic equilibrium, providing additional evidence that {N}ew {C}aledonia is an old {D}arwinian island, being submerged during the {E}ocene and colonized after re-emergence c. 37{M}a.}, keywords = {{ARBRE} {FORESTIER} ; {PHYLOGENIE} ; {MORPHOLOGIE} ; {CLASSIFICATION} ; {MILIEU} {INSULAIRE} ; {NOUVELLE} {CALEDONIE}}, booktitle = {}, journal = {{B}otanical {J}ournal of the {L}innean {S}ociety}, volume = {179}, numero = {1}, pages = {57--77}, ISSN = {0024-4074 ; 1095-8339}, year = {2015}, DOI = {10.1111/boj.12308}, URL = {https://www.documentation.ird.fr/hor/fdi:010065228}, }