@inbook {1305, title = {Flore de l{\textquoteright}{\^I}le de la R{\'e}union}, year = {1895}, pages = {319}, edition = {Typographie de la V{\'e}rit{\'e}}, author = {Cordemoy, Eug{\'e}ne J de} } @inbook {1304, title = {Tertia Dissertatio Botanica}, booktitle = {Monadelphiae classis dissertationes decem}, volume = {3}, year = {1787}, pages = {127, t. 41, fig. 1}, edition = {Firmin-Didot et Cie}, keywords = {Dombeya, Dombeya umbellata}, url = {http://www.biodiversitylibrary.org/item/97564$\#$page/239/mode/1up}, author = {Cavanilles, A J} } @inbook {1303, title = {Tertia Dissertatio Botanica}, booktitle = {Monadelphiae classis dissertationes decem}, volume = {3}, year = {1787}, pages = {125, t. 40, fig. 1}, edition = {Firmin-Didot et Cie}, keywords = {Dombeya, Dombeya punctata}, url = {http://www.biodiversitylibrary.org/item/97564$\#$page/237/mode/1up}, author = {Cavanilles, A J} } @inbook {1302, title = {Tertia Dissertatio Botanica}, booktitle = {Monadelphiae classis dissertationes decem}, volume = {3}, year = {1787}, pages = {128, t. 42, fig. 2}, edition = {Firmin-Didot et Cie}, keywords = {Dombeya, Dombeya ferruginea, Dombeya ferruginea ssp. ferruginea}, url = {http://www.biodiversitylibrary.org/item/97564$\#$page/240/mode/1up}, author = {Cavanilles, A J} } @inbook {1301, title = {Tertia Dissertatio Botanica}, booktitle = {Monadelphiae classis dissertationes decem}, volume = {3}, year = {1787}, pages = {117, t. 16, fig. 2}, edition = {Firmin-Didot et Cie}, keywords = {Ruizia, Ruizia cordata}, url = {http://www.biodiversitylibrary.org/item/97564$\#$page/229/mode/1up}, author = {Cavanilles, A J} } @mastersthesis {1299, title = {Syst{\'e}matique des Dombeyoideae (Malvaceae, ex-Sterculiaceae) des Mascareignes : approches morphologique et mol{\'e}culaire}, volume = {PhD}, year = {2009}, school = {Universit{\'e} Pierre et Marie-Curie}, address = {Paris}, abstract = {

La sous-famille des Dombeyoideae (Malvaceae, \« ex-Sterculiaceae \») pr\ésente dans l\’archipel des Mascareignes (\îles de la R\éunion, Maurice et Rodrigues) une diversit\é sp\écifique importante (4 genres, 23 esp\èces dont 22 sont end\émiques) et des traits d\’histoire de vie originaux, telle la dio\écie. Notre objectif a \ét\é d\’\étudier les relations de parent\é entre les taxons mascarins et les repr\ésentants africains, malgaches et asiatiques de cette sous-famille. Des caract\ères morphologiques et mol\éculaires ont \ét\é utilis\és ind\épendamment et conjointement pour reconstruire des sc\énarios phylog\én\étiques. Les analyses montrent que les Dombeyoideae des Mascareignes sont polyphyl\étiques et regroup\és au sein de quatre clades ayant chacun pour origine un unique \év\ènement de dispersion/colonisation de Madagascar vers l\’archipel. L\’inf\érence de l\’\évolution des syst\èmes de reproduction montre que la dio\écie d\ériverait de l\’hermaphrodisme. Aux Mascareignes, la s\éparation des sexes se serait ainsi diff\érenci\ée au moins trois fois de fa\çon convergente.

}, author = {Le P{\'e}chon, Timoth{\'e}e} } @article {1298, title = {Flower size dimorphism in diclinous plants native to La R{\'e}union Island}, journal = {Plant Systematics and Evolution}, volume = {240}, year = {2003}, pages = {163-173}, abstract = {

Although many diclinous plants have a flower size dimorphism, the causes and ecological correlates of dimorphism in flower size remain poorly understood. In this paper we quantify the frequency and distribution of flower size dimorphism in the native flora of La R\éunion Island. The frequency of flower size dimorphism is lower than in a previous global study suggesting that the dimorphism may limit colonisation success. Flower size dimorphism is significantly more frequent in endemic taxa compared to indigenous taxa, a trend that is particularly evident at the species level, due to the large number of species with male flowers bigger than female flowers and is more common in species-rich lineages. These results suggest that flower size dimorphism may be associated with species divergence. The direction of dimorphism varies between dioecious and monoecious species, suggesting that the mechanisms acting on flower size variation differ in species with these different sexual systems.

}, issn = {0378-2697}, doi = {10.1007/s00606-003-0011-4}, url = {http://link.springer.com/article/10.1007/s00606-003-0011-4}, author = {Humeau, Laurence and Pailler, T and Thompson, J D} } @article {1297, title = {Vertebrate pollination of the endemic Trochetia granulata (Malvaceae) on R{\'e}union}, journal = {Journal of Tropical Ecology}, volume = {29}, year = {2013}, pages = {353-356}, abstract = {

The pollination ecology and breeding system of Trochetia granulata (Malvaceae), an endemic tree species from R\éunion were studied. In 2010\–2011, compatibility studies were conducted on a total of 154 flowers from 35 different individuals using three different hand pollination treatments: (a) autofertility, (b) self-pollination and (c) cross-pollination. During the period, we also studied the pollination ecology of T. granulata. During 48 h of video recordings, we tracked flower visits to T. granulata in six different sites and studied the behaviour of the visitors. The results from the hand-cross experiments show that T. granulata is self-compatible (60.8\% fruit set) but cannot produce fruit (5.4\% fruit set) without the visit of a pollen vector. During surveys, four different visitors were reported: the introduced honey bee (Apis mellifera), two endemic species of white-eye (Zosterops borbonicus borbonicus and Z. olivaceus) and the endemic R\éunion day gecko (Phelsuma borbonica). This study documented a new case of vertebrate-pollination by lizard and birds in an insular context. These interactions might be linked to several uncommon floral traits of Trochetia species.

}, keywords = {Apis, gecko, island, Phelsuma, plant-animal interactions, Zosterops}, doi = {http://dx.doi.org/10.1017/S0266467413000278}, url = {http://journals.cambridge.org/action/displayAbstract?fromPage=online\&aid=8948698}, author = {Le P{\'e}chon, Timoth{\'e}e and Sanchez, Micka{\"e}l and Humeau, Laurence and Gigord, Luc D B and Zhang, Li-Bing} } @article {1296, title = {Systematics of Dombeyoideae (Malvaceae) in the Mascarene archipelago (Indian Ocean) inferred from morphology}, journal = {Taxon}, volume = {58}, year = {2009}, pages = {519-531}, abstract = {

The Mascarene Archipelago is characterized by remarkable fauna and flora, mainly due to its high rate of endemism. The Dombeyoideae Beilschm. is one of the most diversified groups of angiosperms in the Mascarenes with 22 species, 21 of which are endemic. We used parsimony analysis of morphological characters to examine the relationships between the endemic Dombeyoideae from the Mascarenes and the members of Dombeyoideae from Africa, Madagascar and Asia. A morphological matrix was created including 36 representative species and 42 characters. Among the most parsimonious trees (MPTs) those with the highest number of secondary homologies were identified. The Dombeyoideae from the Mascarenes are polyphyletic and split into nine clades. Trochetia appears monophyletic and more closely related to Eriolaena and Helmiopsis than to Dombeya. All Dombeya taxa are included in a clade together with Ruizia and Astiria, which makes Dombeya paraphyletic. In terms of breeding systems the Malagasy Dombeyoideae are hermaphroditic, whereas those of the Mascarenes are considered dioecious. The polyphyly of the Mascarene Dombeyoideae suggests that dioecy has been acquired several times. At least five colonization events from Madagascar to the Mascarene archipelago are inferred. The evolutionary history of two lineages of Mascarene Domeyoideae seems to be related to adaption to xeric habitats.

}, keywords = {Dioecy, Dombeyoideae, MaHo Method, Mascarene Archipelago, Phylogeny, Systematics}, url = {http://www.jstor.org/discover/10.2307/27756889?uid=3738912\&uid=367858501\&uid=2129\&uid=2\&uid=70\&uid=3\&uid=60\&sid=21102886014073}, author = {Le P{\'e}chon, Timoth{\'e}e and Cao, T and Dubuisson, Jean-Yves and Gigord, Luc D B} } @article {1295, title = {Variation in the breeding system of two sympatric Dombeya species on La R{\'e}union island}, journal = {Plant Systematics and Evolution}, volume = {218}, year = {1999}, pages = {77-87}, author = {Humeau, Laurence and Pailler, T and Thompson, J D} } @article {1294, title = {Cryptic dioecy and leaky dioecy in endemic species of Dombeya (Sterculiaceae) on La R{\'e}union}, journal = {American Journal of Botany}, volume = {86}, year = {1999}, pages = {1437-1447}, url = {http://www.amjbot.org/content/86/10/1437.long}, author = {Humeau, Laurence and Pailler, T and Thompson, J D} } @article {1293, title = {Wood anatomy of the mascarene dombeyoideae : systematic and ecological implications}, journal = {IAWA Journal}, volume = {32}, year = {2011}, pages = {493-519}, url = {http://www.researchgate.net/publication/215892062_Wood_anatomy_of_the_Mascarene_Dombeyoideae_systematic_and_ecological_implications/file/79e415053071adf2e0.pdf}, author = {Boura, Ana{\"\i}s and Le P{\'e}chon, Timoth{\'e}e and Thomas, Romain} } @article {1292, title = {Les~Dombeya~des~{\^\i}les~des~Mascareignes}, journal = {M{\'e}moire~de~l{\textquoteright}Institut~Scientifique~de Madagascar, S{\'e}rie B, Biologie V{\'e}g{\'e}tale}, volume = {9}, year = {1959}, pages = {189-216}, author = {Ar{\`e}nes, J} } @article {1291, title = {Sterculiac{\'e}es et Lecythidac{\'e}es nouvelles aux Mascareignes}, journal = {Adansonia}, volume = {20}, year = {1981}, pages = {439-449}, author = {Friedmann, Francis} } @book {1290, title = {Les Mahots des Mascareignes : base de connaissances sur les Dombeyoideae des Mascareignes}, year = {2011}, publisher = {Universit{\'e} de La R{\'e}union}, organization = {Universit{\'e} de La R{\'e}union}, address = {Saint-Denis}, url = {http://mahots.univ-reunion.fr/sortie-du-livre-les-mahots-des-mascareignes/}, author = {Le P{\'e}chon, Timoth{\'e}e and Humeau, Laurence and Gigord, Luc D B and Paus{\'e}, Jean-Bernard and Caron, D and Baider, Claudia and Gigord, P and Grosser, D and Hansen, D and Sevathian, J} } @article {1289, title = {The rescue of Ruizia cordata and the possible extinction of Astiria rosea}, journal = {Botanic Gardens Conservation News}, volume = {1}, year = {1988}, pages = {36-39}, keywords = {Astyria, Ruizia}, author = {Lesouef, J Y} } @book {1288, title = {The genus Dombeya (Sterculiaceae) in continental Africa}, year = {1991}, pages = {184}, publisher = {National Botanic Garden of Belgium}, organization = {National Botanic Garden of Belgium}, edition = {Opera Botanica Belgica}, address = {Meise}, keywords = {Africa, Dombeya, Sterculiaceae}, author = {Seyani, J H} } @mastersthesis {1286, title = {Ecologie et {\'e}volution de la dio{\'e}cie et du dimorphisme sexuel de la taille des fleurs chez les Dombeya (Sterculiac{\'e}es) end{\'e}miques de la R{\'e}union}, volume = {PhD}, year = {1999}, school = {Universit{\'e} de La R{\'e}union}, address = {Saint-Denis}, abstract = {

Les forts taux d\&$\#$39;esp\èces dio\ïques sur les \îles ont longtemps fascin\é les biologistes. Or le fonctionnement de la dio\écie en milieu insulaire a \ét\é peu abord\é. Les variations dans l\&$\#$39;expression de la dio\écie et du dimorphisme sexuel de la taille des fleurs sont aujourd\&$\#$39;hui examin\és dans l\&$\#$39;archipel des Mascareignes. A la r\éunion, les esp\èces unisexu\ées du genre \"Dombeya\" (sterculiac\ées) sont dio\ïques cryptiques mais pr\ésentent une variabilit\é dans l\&$\#$39;expression de la dio\écie. Certaines esp\èces strictement dio\ïques constituent de grandes populations en altitude alors que les esp\èces partiellement dio\ïques forment de petites populations \à basse altitude. Par ailleurs, l\&$\#$39;hybridation entre esp\èces strictement dio\ïques et partiellement dio\ïques semble engendrer des taxons hermaphrodites autocompatibles. Ces r\ésultats demandent confirmation par une \étude mol\éculaire plus pouss\ée, mais l\&$\#$39;hybridation en milieu insulaire semble \être un processus \évolutif important dans ce genre. Nos r\ésultats montrent que le dimorphisme sexuel de la taille des fleurs de la flore unisexu\ée indig\ène de la R\éunion est un ph\énom\ène largement r\épandu. Le biais observ\é est souvent en faveur des individus m\âles, ce qui peut \être corr\él\é \à la zoogamie, fr\équente sur cette \île. Le dimorphisme est plus abondant chez les esp\èces end\émiques que chez les taxons indig\ènes et est variable entre les esp\èces apparent\ées. Un mod\èle allom\étrique est propos\é pour illustrer ces variations au sein du genre \"Dombeya\". Cette th\èse apporte les connaissances de base sur la biologie du genre \"Dombeya\" \à la R\éunion dont certaines esp\èces constituent les \él\éments cl\és des for\êts primaires et d\&$\#$39;autres sont des esp\èces rares des milieux fragment\és.

}, keywords = {Dimorphisme sexuel, dio{\'e}cie, Dombeya, hybridation, Iles oc{\'e}aniques, La R{\'e}union, Oc{\'e}an Indien, Sterculiaceae, Taille des fleurs}, url = {http://tel.archives-ouvertes.fr/tel-00488723/en/}, author = {Humeau, Laurence} } @inbook {1285, title = {Astiria rosea}, booktitle = {Edwards{\textquoteright}s botanical register}, series = {The Botanical register : consisting of coloured figures of plants and shrubs ; cultivated in British Gardens}, volume = {30}, year = {1844}, pages = {tab. 49}, edition = {Lindley, John \& Ridgway, James }, url = {http://www.biodiversitylibrary.org/item/9067$\#$page/151/mode/1up}, author = {Lindley, John} } @inbook {1284, title = {Sterculiaceae}, booktitle = {Flore des Mascareignes, 51. Malvac{\'e}es {\`a} 62. Oxalidac{\'e}es}, volume = {53}, year = {1987}, pages = {1{\textendash}50}, edition = {MSIRI {\textendash} ORSTOM {\textendash} Royal Botanical Gardens}, address = {Port-Louis, Paris, London}, keywords = {Astyria, Dombeya, Dombeyoideae, Ruizia, Trochetia}, issn = {2-7099-1402-6}, author = {Friedmann, Francis} } @article {1283, title = {Dombeya formosa (Malvaceae s.l.): A New Species Endemic to La R{\'e}union (Indian Ocean) Based on Morphological and Molecular Evidence}, journal = {Systematic Botany}, volume = {38}, year = {2013}, pages = {424-433}, abstract = {

Dombeya formosa (Malvaceae s.l. or Dombeyaceae), a new species endemic to La R\éunion, is described and illustrated. The species is distinguishable by its ovate leaves with round or slightly cordate bases, round to lightly acute apices and glabrescent abaxial surfaces, subulate and persistent stipules, umbellate inflorescences, and acute apices of floral bracts. Dombeya formosa is morphologically close to Dombeya punctata Cav. but differs from it in having ovate leaves and acute apices on floral bracts. Dombeya formosa is also morphologically similar to D. ficulnea Baill. but can be distinguished from it by its persistent and subulate stipules as well as the glabrescent adaxial surface of its leaves. Our study, focusing on 16 quantitative floral characters, demonstrates that there is a clear morphological distinction between D. formosa, D. punctata, and D. ficulnea. In comparison to the other two species, Dombeya formosa possesses smaller flowers and additionally shows cryptic dioecy along with flower-size dimorphism between sexes. Amongst the Mascarene Dombeyoideae, it is the only species distributed up to an altitude of 2,100 m. The phylogenetic position of Dombeya formosa is consistent with the morphological features and locates the species within the clade endemic to La R\éunion characterized by umbellate inflorescences.

}, keywords = {Dioecy, Dombeyaceae, Dombeyoideae, Phylogeny, taxonomy}, isbn = {1548-2324}, issn = {0363-6445}, doi = {http://dx.doi.org/10.1600/036364413X666732}, url = {http://www.bioone.org/doi/abs/10.1600/036364413X666732}, author = {Le P{\'e}chon, Timoth{\'e}e and Paus{\'e}, Jean-Bernard and Dubuisson, Jean-Yves and Gigord, Luc D B and Haevermans, Agathe and Haevermans, Thomas and Humeau, Laurence} } @article {1282, title = {Dombeya sevathianii (Malvaceae) : A new critically endangered species endemic to Mauritius (Indian Ocean)}, journal = {Phytotaxa}, volume = {24}, year = {2011}, pages = {1-10}, abstract = {

Dombeya sevathianii, a new endemic species from Mauritius, is described and illustrated. Based on its morphology, D. sevathianii belongs to the section Assonia as defined by Ar\ènes and is closely related to D. populnea, endemic to La R\éunion and Mauritius. These affinities are confirmed by a previous molecular study. The morphological diagnostic features for D. sevathianii are the cupuliform and entire epicalyx, and the absence of staminodes within the androecium. Given its known restricted distribution and small population, the species should be considered Critically Endangered (CR) as per the Red List Criteria of the International Union for the Conservation of Nature.

}, keywords = {Assonia, breeding system, conservation, island, IUCN, Mascarenes}, issn = {ISSN 1179-3155}, url = {http://www.mapress.com/phytotaxa/content/2011/pt00024.htm}, author = {Le P{\'e}chon, Timoth{\'e}e and Baider, Claudia and Haevermans, Agathe and Dubuisson, Jean-Yves} } @article {LePechon2010, title = {Multiple colonizations from Madagascar and converged acquisition of dioecy in the Mascarene Dombeyoideae (Malvaceae) as inferred from chloroplast and nuclear DNA sequence analyses.}, journal = {Annals of botany}, volume = {106}, number = {2}, year = {2010}, pages = {343{\textendash}57}, abstract = {

BACKGROUND AND AIMS: In the Mascarenes, a young oceanic archipelago composed of three main islands, the Dombeyoideae (Malvaceae) have diversified extensively with a high endemism rate. With the exception of the genus Trochetia, Mascarene Dombeyoideae are described as dioecious whereas Malagasy and African species are considered to be monocline, species with individuals bearing hermaphrodite/perfect flowers. In this study, the phylogenetic relationships were reconstructed to clarify the taxonomy, understand the phylogeographic pattern of relationships and infer the evolution of the breeding systems for the Mascarenes Dombeyoideae. METHODS: Parsimony and Bayesian analysis of four DNA markers (ITS, rpl16 intron and two intergenic spacers trnQ-rsp16 and psbM-trnD) was used. The molecular matrix comprised 2985 characters and 48 taxa. The Bayesian phylogeny was used to infer phylogeographical hypotheses and the evolution of breeding systems. KEY RESULTS: Parsimony and Bayesian trees produced similar results. The Dombeyoideae from the Mascarenes are polyphyletic and distributed among four clades. Species of Dombeya, Trochetia and Ruizia are nested in the same clade, which implies the paraphyly of Dombeya. Additionally, it is shown that each of the four clades has an independent Malagasy origin. Two adaptive radiation events have occurred within two endemic lineages of the Mascarenes. The polyphyly of the Mascarene Dombeyoideae suggests at least three independent acquisitions of dioecy. CONCLUSIONS: This molecular phylogeny highlights the taxonomic issues within the Dombeyoideae. Indeed, the limits and distinctions of the genera Dombeya, Trochetia and Ruizia should be reconsidered. The close phylogeographic relationships between the flora of the Mascarenes and Madagascar are confirmed. Despite their independent origins and a distinct evolutionary history, each endemic clade has developed a different breeding systems (dioecy) compared with the Malagasy Dombeyoideae. Sex separation appears as an evolutionary convergence and may be the consequence of selective pressures particular to insular environments.

}, keywords = {Bayes Theorem, Chloroplasts, Chloroplasts: genetics, DNA, Malvaceae, Malvaceae: classification, Malvaceae: genetics, Phylogeny, Plant, Plant: genetics, Sequence Analysis}, issn = {1095-8290}, doi = {10.1093/aob/mcq116}, url = {http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=2908169\&tool=pmcentrez\&rendertype=abstract}, author = {Le P{\'e}chon, Timoth{\'e}e and Dubuisson, Jean-Yves and Haevermans, Thomas and Cruaud, Corinne and Couloux, Arnaud and Gigord, Luc D B} }