Corpus ID: 85707717


  author={A. L. Thomas and J. Doyle},
The pantropical family Annonaceae (130 genera) is relatively poorly represented in Madagascar, with only nine genera. A cladistic analysis of the principal genera or groups of Annonaceae, using 78 macro- and micro-morphological characters, allows the Malagasy taxa to be placed in major lines of the family. It confirms the primitive character of the one endemic genus, Ambavia, which is near the base of the family and belongs to a small clade with other members in South America, Africa, and Asia… Expand

Figures from this paper

Phylogeny, Molecular and Fossil Dating, and Biogeographic History of Annonaceae and Myristicaceae (Magnoliales)
Phylogenetic analyses of Myristicaceae confirm that the ancestral area was Africa‐Madagascar and that Asian taxa are derived, but the family as a whole show strikingly lower molecular divergence than Annonaceae, indicating either a much younger age or a marked slowdown in molecular evolution. Expand
Phylogeny and Geographic History of Annonaceae
Whereas Takhtajan and Smith situated the origin of angiosperms between Southeast Asia and Australia, Walker and Le Thomas emphasized the concentration of primitive pollen types of Annonaceae in SouthExpand
Phylogeny and Historical Biogeography of Anaxagorea (Annonaceae) Using Morphology and Non-Coding Chloroplast Sequence Data
The hypothesis of a Laurasian origin for Anaxagorea is refuted and the clade containing the Asian and Central American species is dated to be younger than the Oligocene climatic deterioration, which reduces support for the North Atlantic land bridge as a dispersal route from South America to Asia. Expand
A new subfamilial and tribal classification of the pantropical flowering plant family Annonaceae informed by molecular phylogenetics
A robust family-wide phylogenetic tree and subsequent classification of Annonaceae is presented, for the first time, using a supermatrix of up to eight plastid markers sequenced from 193 ingroup and seven outgroup species. Expand
Post-Boreotropical dispersals explain the pantropical disjunction in Paederia (Rubiaceae).
The results demonstrate the importance of post-Boreotropical long-distance dispersals in shaping the global pantropical disjunction in some plants, such as Paederia, with small, winged diaspores adapted to long- distance dispersal by various agents including wind, ocean currents or birds. Expand
The historical origins of palaeotropical intercontinental disjunctions in the pantropical flowering plant family Annonaceae
Palaeogeographic reconstructions and the fossil record from the Arabian Peninsula support the plausibility of a hypothesized window of overland dispersal opportunity for lowland tropical forest taxa prior to climate deterioration commencing in the late Middle Miocene, providing an alternative to transoceanic dispersal. Expand
Historical biogeography of two cosmopolitan families of flowering plants: Annonaceae and Rhamnaceae.
In both groups, long-distance dispersal appears to have played a more significant role in establishing modern patterns than had previously been assumed. Expand
Molecular phylogenetic support for a broader delimitation of Uvaria (Annonaceae), inclusive of Anomianthus, Cyathostemma, Ellipeia, Ellipeiopsis and Rauwenhoffia
A molecular phylogenetic analysis of this group was undertaken using maximum parsimony, maximum likelihood and Bayesian methods based on four chloroplast DNA regions, showing Uvaria to be paraphyletic with all representatives of the other five genera nested within it. Expand
Malagasy Primate Origins: Phylogenies, Fossils, and Biogeographic Reconstructions
This study has evaluated the biogeographic implications of competing primate phylogenies in order to reconstruct the area of origin of Malagasy strepsirhines, demonstrating extreme vulnerability to both out-group choice and internal tree topology. Expand
Understanding the formation of Mediterranean-African-Asian disjunctions: evidence for Miocene climate-driven vicariance and recent long-distance dispersal in the Tertiary relict Smilax aspera (Smilacaceae).
The results support the idea that geographic range formation and divergence of Tertiary relict species are more or less gradual (mostly vicariant) processes over long time spans, rather than point events in history, and highlight the importance of the Mediterranean Basin as a centre of intraspecific divergence for Tertiaries relict plants. Expand


Cladistic analysis and pollen evolution in Annonaceae
A cladistic analysis uses both palynological and non-palynological characters to evaluate hypotheses on pollen evolution in Annonaceae, and includes other Magnoliales as outgroups, finding that the inferred basic pollen type is single and monosulcate, with granular infratectal structure (interstitium), but with a few nexinal foliations. Expand
Pollen ultrastructure and relationships of Fusaea (Baillon) Safford and Duguetia A. Saint-Hilaire (Annonaceae)
Cladistic analyses indicate that the neotropical genus Fusaea does not belong with these genera (the authors' xylopioid clade) but rather with several genera with pseudosyncarpous fruits (Letestudoxa, Duguetia, Pachypodanthium), which together with Uvaria and Toussaintia form their uvarioidclade. Expand
The genus Polyalthia Blume (Annonaceae) in Madagascar.
L'etude du genre Polyalthia a Madagascar permet de reconnaitre 18 especes classees en cinq groupes informels d'analyses en synonymie et cinque espece nouvelles sont decrites. Expand
Pollen characters of the Polyalthia hypoleuca complex (Annonaceae) : their significance in establishing monophyly and candidate outgroups
Etude au MEB et MET de la morphologie du pollen au sein du complexe Polyalthia hypoleuca, les caracteres polliniques sont utilises pour rechercher le groupe externe le plus plausible de ce complexe
Biological relationships between Africa and South America
Examines the separation and subsequent history of Africa and South America from a biological point of view. The book provides an up-to-date comparative view of their flora and fauna, and summarizesExpand
Macclade: Analysis of Phylogeny and Character Evolution/Version 3
Part I Introducing MacClade: introduction - a tutorial overview of MacClades and an introduction to phylogeny reconstructing character evolution using parsimony stratigraphic parsimony. Expand
Phytogéographie tropicale réalités et perspectives
Au total, 168 participants ont repré­ senté 29 pays (10 d’Afrique, 10 d’Europe, 5 d’Amérique et 4 d’Asie). Au cours de ses­ sions, 79 communications ont été présentées et 29 affiches ont étéExpand
Sur la systématique et les potentialités évolutives des Annonacées: cas d'Ambavia gerrardii (Baill.): le Thomas, espèce endémique de Madagascar
Une analyse anatomique des structures florales de l'une des deux especes d'Ambavia et de leur variation intra-individuelle met en evidence le caractere primitif et le dynamisme evolutif du genre
Le genre Ambuvia à Madagascar (Annonacées)
  • Adansonia, sér. 2,
  • 1972
Evolution of pollen characters and relationships of African Annonaceae : implications of a cladistic analysis
  • 2 e Symposium de Palynologie Africaine , Tervuren , Belgium . CIFEG , Publ . Occas . Orléans
  • 1995