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Full Text Article MEP Notes 22-25 Mada Candollea 67-1_. 23.07.12 11:14 Page137 Notes on the flora of Madagascar, 22-25 Martin W. Callmander, Peter B. Phillipson & Laurent Gautier (ed.) Abstract Résumé CALLMANDER, M. W., P. B. PHILLIPSON & L. GAUTIER (ed.) (2012). CALLMANDER, M. W., P. B. PHILLIPSON & L. GAUTIER (ed.) (2012). Notes on the flora of Madagascar, 22-25. Candollea 67: 137-151. In French Notes sur la flore de Madagascar, 22-25. Candollea 67: 137-151. En français and English, English and French abstracts. et anglais, résumés anglais et français. Ongoing research on Madagascar’s flora is revealing numerous Les recherches en cours sur la flore de Madagascar révèlent taxonomic novelties and nomenclatural inconsistencies, and de nombreuses nouveautés taxonomiques, des problèmes de providing new data on species distribution. This is the fourth nomenclature et de nouvelles données sur la distribution des set of notes in a series that aims to provide the botanical com- espèces. Cette publication est la quatrième d’une série de notes munity working on the flora of Madagascar an opportunity to destinées à donner à la communauté botanique internationale publish short communications on these topics, and comprises travaillant sur Madagascar la possibilité de publier de courtes four notes. contributions traitant de ces aspects et comprend quatre notes. – Note 22. Description of the fruit of Tabernaemontana capuronii – Note 22. Description du fruit de Tabernaemontana capuronii Leeuwenb. (Apocynaceae), 40 ans après la découverte de Leeuwenb. (Apocynaceae), 40 years after the discovery of this l’espèce, par Lucile Allorge & Adolphe Lehavana. Description species, by Lucile Allorge & Adolphe Lehavana. The fruit of an du fruit, jusqu’ici inconnu, d’une Apocynaceae (Tabernaemon- Apocynaceae (Tabernaemontaneae), Tabernaemontana capuronii taneae), Tabernaemontana capuronii Leeuwenb. (décrite sous Leeuwenb. (described as Capuronetta elegans Markgr. in 1972) Capuronetta elegans Markgr. en 1972). L’intérêt scientifique is described for the first time. The fruit is of scientific interest de ce fruit est important en raison de la position systématique because of the contested systematic position of this species. contestée de l’espèce. – Note 23. Notes on the genus Ochna L. (Ochnaceae) in Mada- – Note 23. Notes sur le genre Ochna L. (Ochnaceae) à Mada- gascar, by Martin W. Callmander & Peter B. Phillipson. Four gascar, par Martin W. Callmander & Peter B. Phillipson. Quatre Ochnaceae species originally described in the genera Diporid- espèces d’Ochnaceae décrites dans les genres Diporidium Tiegh., ium Tiegh., Discladium Tiegh. and Polythecium Tiegh. are for- Discladium Tiegh. et Polythecium Tiegh. sont formellement mally transferred to the genus Ochna, following currently transférées dans Ochna, en accord avec les délimitations géné- accepted generic delimitation in the family. The necessary com- riques qui prévalent actuellement dans la famille. Les nouvelles binations Ochna baronii (Tiegh.) Callm. & Phillipson, Ochna combinaisons nécessaires Ochna baronii (Tiegh.) Callm. & louvelii (H. Perrier) Callm. & Phillipson and Ochna thouvenotii Phillipson, Ochna louvelii (H. Perrier) Callm. & Phillipson (H. Perrier) Callm. & Phillipson are provided. A new name is et Ochna thouvenotii (H. Perrier) Callm. & Phillipson sont required for Polythecium macranthum Tiegh.: Ochna sambi- proposées. Un nouveau nom est nécessaire pour Polythecium ranensis Callm. & Phillip son. macranthum Tiegh.: Ochna sambiranensis Callm. & Phillipson. Addresses of the editors: MWC: Missouri Botanical Garden, P.O. Box 299, St. Louis, Missouri, 63166-0299, U.S.A. and Conservatoire et Jardin botaniques de la Ville de Genève, ch. de l’Impératrice 1, case postale 60, 1292 Chambésy. Switzerland. E-mail: [email protected] PBP: Missouri Botanical Garden, P.O. Box 299, St. Louis, Missouri, 63166-0299, U.S.A. and Muséum national d’Histoire naturelle, Département Systématique et Evolution, UMR 7205, OSEB, case postale 39, rue Cuvier 57, 75231 Paris, cedex 05, France. E-mail: [email protected] LG: Conservatoire et Jardin botaniques de la Ville de Genève and Université de Genève, Laboratoire de botanique systématique et biodiversité, ch. de l’Impératrice 1, case postale 60, 1292 Chambésy. Switzerland. E-mail: [email protected] Online SSN: 2235-3658 Candollea 67(1): 137-151 (2012) © CONSERVATOIRE ET JARDIN BOTANIQUES DE GENÈVE 2012 MEP Notes 22-25 Mada Candollea 67-1_. 16.07.12 08:53 Page138 138 – Candollea 67, 2012 – Note 24. Peltophorum dasyrhachis (Miq.) Kurz: a new – Note 24. Peltophorum dasyrhachis (Miq.) Kurz: une nouvelle record of a Southeast Asian species of Fabaceae (Caesalpin- occurence d’une espèce asiatique de Fabaceae (Caesalpinioi- ioideae) naturalized in northwestern Madagascar, by Zachary deae) naturalisée dans le nortd-ouest de Madagascar, par S. Rogers and Mats Thulin. Two recent Fabaceae collections Zachary S. Rogers et Mats Thulin. Deux collections récentes from northwestern Madagascar document the presence of de Fabaceae du nord-ouest de Madagascar permettent de docu- Peltophorum dasyrhachis (Miq.) Kurz in the country. This dis- menter la présence de Peltophorum dasyrhachis (Miq.) Kurz covery signals a new naturalized species of Caesalpinioideae dans le pays. Cette découverte signale une nouvelle espèce for Madagascar and adds another genus to the island’s highly naturalisée de Caesalpinioideae de Madagascar et ajoute un diverse flora. The orthography and authorship of the name is autre genre à la flore très diversifiée de l’île. L’orthographe et discussed and a lectotype is designated. les auteurs du nom sont discutés et un lectotype est désigné. – Note 25. Mimusops coriacea (A. DC.) Miq. (Sapotaceae): – Note 25. Mimusops coriacea (A. DC.) Miq. (Sapotaceae): nomenclature, distribution and ecology, by Laurent Gautier, nomenclature, distribution et écologie, par Laurent Gautier, Louis Nusbaumer, Rhéa Garrat, Richard Randrianaivo & Peter Louis Nusbaumer, Rhéa Garrat, Richard Randrianaivo & Peter B. Phillipson. Mimusops coriacea (A. DC.) Miq., a useful B. Phillipson. Mimusops coriacea (A. DC. ) Miq., une espèce species of the littoral forests of the humid coasts of Madagascar utile des forêts littorales des côtes humides de Madagascar est is still often erroneously refered to as Mimusops commersonii encore souvent appelée par erreur Mimusops commersonii (Engl.) G. Don. The authors confirm the nomenclature of this (Engl.) G. Don. Les auteurs confirment la nomenclature useful species. They present a distribution map, analyze it, and de cette espèce utile, proposent une carte de sa répartition et discuss its phenology and conservation status. l’analysent; ils discutent de sa phénologie et de son statut de conservation. Key-words APOCYNACEAE – OCHNACEAE – FABACEAE – SAPOTA - CEAE – Tabernaemontanae – Caesalpinioideae – Capuronetta – Pandaca –Tabernaemontana – Diporidium – Discladium – Polythecium – Ochna – Peltophorum – Mimusops – Madaga - scar – Southeast Asia – Mauritius – Nomenclature – Taxonomy – IUCN Red List MEP Notes 22-25 Mada Candollea 67-1_. 16.07.12 08:53 Page139 22. ALLORGE, Lucile & Adolphe LEHAVANA: Description du fruit de Tabernaemontana capuronii Leeuwenb. (Apocynaceae), 40 ans après la découverte de l’espèce Introduction Des analyses chimiques menées sur cette espèce ont débouché sur la description de la molécule Capuronane (K) En 1972, F. Markgraf décrivit un genre nouveau Capuronetta (CHARDON-LORIAUX & HUSSON, 1975). Cette molécule a Markgr. ne comprenant qu’une espèce C. elegans Markgr., de depuis été retrouvée dans cinq espèces appartenant ancien- Madagascar. Ni dans la description du genre et celle de l’espèce, nement au genre Pandaca Thouars (LIM, 2008), comprises ARKGRAF parues dans M (1972), ni dans la «Flore de Madagascar actuellement dans Tabernaemontana sensu LEEUWENBERG et des Comores, Apocynaceae» (MARKGRAF, 1976), le fruit (1991). n’était connu; ce nouveau genre ne reposait que sur les caractères Dans une précédente publication (ALLORGE, 1985), nous de la fleur: l’illustration qui accompagne le texte de la «Flore» avons étudié l’ornementation du tégument séminal au M.E.B. montre bien la façon dont les lobes très longs sont enroulés en de 18 espèces et montré l’intérêt taxonomique de ce spirale dans le sens contraire des aiguilles d’une montre (sinis- caractère. Nous y avons décrit cinq types d’ornementation: trorse), descendant dans le tube jusqu’au niveau des apex des 1. avec nodules; 2. avec mailles; 3. avec des alvéoles; étamines, caractère inhabituel chez les Tabernaemontanoideae. 4. plissé-ridé et 5. à circonvolution plissées-ridées. La décou- Markgraf avait distingué le genre Capuronetta des autres genres verte d’un fruit mûr de T. capuronii nous permettrait donc malgaches, entre autres choses, du fait de cette longue spirale de voir à quel type se rapporte le tégument de la graine et formée par les lobes dans le tube de la corolle. d’en tirer des conclusions taxonomiques. Nous avons également fait des coupes longitudinales Jusqu’à récemment, T. capuronii n’était connu que par six et transversales, d’un bouton de Capuronetta elegans fixé échantillons récoltés dans la forêt d’Analalava, près de Foul- dans le FAA, sur la récolte Debray 1969, qui ont confirmé pointe dans la Province de Toamasina. Nous avons depuis iden- l’enroulement des lobes profondément dans le tube (ALLORGE tifié une récolte supplémentaire de l’espèce également récoltée & COUDERC, 1983: 232, tab. 4). à Analalava (Lehavana & al. 34). Cette récolte comporte cinq
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