@article{fdi:010086699, title = {{S}ynopsis of {T}ridactyle ({O}rchidaceae : {E}pidendroideae : {V}andeae : {A}ngraecinae) in {S}ao {T}ome and {P}rincipe, with the {D}escription of {F}our {N}ew {S}pecies}, author = {{D}'{H}aijere, {T}. and {S}imo-{D}roissart, {M}. and {D}roissart, {V}incent and {O}liveira, {F}. and {S}tevart, {T}.}, editor = {}, language = {{ENG}}, abstract = {{A} synopsis of {T}ridactyle {S}chltr. ({O}rchidaceae) in {S}ao {T}ome and {P}rincipe is presented. {W}e recognize nine species in {S}ao {T}ome and {P}rincipe, including four new species. {W}e describe here {T}. amadorii {D}'haijere, {T}. cocophila {D}'haijere, {T}. levelevis {D}'haijere & {S}tevart, and {T}. oboensis {D}'haijere & {S}tevart. {T}ridactyle armeniaca ({L}indl.) {S}chltr., recorded by previous studies, is native to {W}est {A}frica and is not found in {S}ao {T}ome and {P}rincipe. {T}ridactyle exhibits an important diversification in {S}ao {T}ome and {P}rincipe, with seven species being endemic (endemism rate > 75%). {H}ere, new records are registered; the natural distribution ranges, habitat, ecology, and conservation status based on {IUCN} guidelines are detailed for all species; two names are lectotypified; and an identification key is provided.}, keywords = {{A}ngraecoid orchid ; endemicity ; {G}ulf of {G}uinea ; {IUCN} {R}ed {L}ist ; oceanic islands ; {O}rchidaceae ; {S}ao {T}ome and {P}rincipe ; species delimitation ; taxonomy ; {T}ridactyle ; typification ; {SAO} {TOME} {E} {PRINCIPE} ; {GOLFE} {DE} {GUINEE}}, booktitle = {}, journal = {{N}ovon}, volume = {30}, numero = {1}, pages = {138--156}, ISSN = {1055-3177}, year = {2022}, DOI = {10.3417/2022769}, URL = {https://www.documentation.ird.fr/hor/fdi:010086699}, }