Sirdavidia, an extraordinary new genus of Annonaceae from Gabon

被引:21
作者
Couvreur, Thomas L. P. [1 ,2 ,3 ]
Niangadouma, Raoul [4 ]
Sonke, Bonaventure [2 ,5 ,6 ]
Sauquet, Herve [7 ]
机构
[1] Inst Rech Dev, UMR DIADE, F-34394 Montpellier 5, France
[2] Univ Yaounde I, Higher Teachers Training Coll, Plant Systemat & Ecol Lab, Yaounde, Cameroon
[3] Nat Biodivers Ctr, Bot Sect, NL-2333 CR Leiden, Netherlands
[4] Natl Herbarium Gabon, Libreville, Gabon
[5] Missouri Bot Garden, Africa & Madagascar Dept, St Louis, MO 63166 USA
[6] Univ Libre Bruxelles, Herbarium & Bibliotheque Bot Africaine, B-1050 Brussels, Belgium
[7] Univ Paris 11, CNRS, Lab Ecol, UMR 8079,Systemat,Evolut, F-91405 Orsay, France
关键词
Piptostigmateae; Monts de Cristal; buzz pollination; vicariance; Annonaceae; Central Africa; Magnoliidae; AFRICAN ANNONACEAE; EVOLUTION; POLLEN; CHARACTERS; REVISION; TANZANIA; MONODORA; CLADE; TAXA;
D O I
10.3897/phytokeys.46.8937
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
A distinctive new monotypic genus from Gabon is described in the tropical plant family Annonaceae: Sirdavidia, in honor to Sir David Attenborough. Molecular phylogenetic analyses confirm that Sirdavidia, which is very distinct from a morphological standpoint, is not nested in any existing genus of Annonaceae and belongs to tribe Piptostigmateae (subfamily Malmeoideae), which now contains a total of six genera. The genus is characterized by long acuminate leaves, fully reflexed red petals, 16-19 bright yellow, loosely arranged stamens forming a cone, and a single carpel topped by a conspicuous stigma. With just three known collections, a preliminary IUCN conservation status assessment is provided as "endangered" as well as a distribution map. The discovery of Sirdavidia is remarkable at several levels. First, it was collected near the road in one of the botanically best-known regions of Gabon: Monts de Cristal National Park. Second, its sister group is the genus Mwasumbia, also monotypic, endemic to a small area in a forest in Tanzania, some 3000 km away. Finally, the floral morphology is highly suggestive of a buzz pollination syndrome. If confirmed, this would be the first documentation of such a pollination syndrome in Magnoliidae and early-diverging angiosperms in general.
引用
收藏
页码:1 / 19
页数:19
相关论文
共 50 条
[21]   A taxonomic revision of the Neotropical genus Cremastosperma (Annonaceae ), including five new species [J].
Pirie, Michael D. ;
Chatrou, Lars W. ;
Maas, Paul J. M. .
PHYTOKEYS, 2018, (112) :1-141
[22]   New Combinations and New Names in Desmopsis (Annonaceae) [J].
Schatz, George E. ;
Ortiz-Rodriguez, Andres Ernesto ;
Martinez-Velarde, Maria Fernanda ;
Couvreur, Thomas L. P. .
NOVON, 2023, 31 (01) :266-268
[23]   An extraordinary new genus and species of Pseudachorutinae (Collembola: Neanuridae) from Colombia [J].
Palacios-vargas, Jose G. .
ZOOTAXA, 2019, 4609 (02) :373-387
[24]   The genus Uvariopsis (Annonaceae) in tropical Africa, with a recombination and one new species from Cameroon [J].
Kenfack, D ;
Gosline, G ;
Gereau, RE ;
Schatz, GE .
NOVON, 2003, 13 (04) :443-449
[25]   Revision of the genus Cyathostemma (Annonaceae) [J].
Utteridge, TMA .
BLUMEA, 2000, 45 (02) :377-396
[26]   The genus Cyathocalyx (Annonaceae) in the Philippines [J].
Wang, Rui Jiang ;
Saunders, Richard M. K. .
SYSTEMATIC BOTANY, 2006, 31 (02) :285-297
[27]   New species of Xylopia (Annonaceae) from East Africa [J].
Johnson, David M. ;
Luke, Quentin ;
Goyder, David J. ;
Murray, Nancy A. .
KEW BULLETIN, 2017, 72 (01)
[28]   A new species of Xylopia (Annonaceae) from the Peruvian Amazon [J].
Pontes-pires, Aline Fernandes ;
MURRAY, N. A. N. C. Y. A. ;
JOHNSON, D. A. V. I. D. M. ;
Barbosa, Maria Regina de v. .
PHYTOTAXA, 2021, 514 (02) :181-186
[29]   Three new species of Mitrephora (Annonaceae) from Thailand [J].
Leeratiwong, Charan ;
Chalermglin, Piya ;
Saunders, Richard M. K. .
PHYTOKEYS, 2023, (218) :93-107
[30]   Complete genus-level phylogenomics and new subtribal classification of the pantropical plant family Annonaceae [J].
Nge, Francis J. ;
Chaowasku, Tanawat ;
Damthongdee, Anissara ;
Wiya, Chattida ;
Soule, Vincent R. C. ;
Rodrigues-Vaz, Carlos ;
Bruy, David ;
Mariac, Cedric ;
Chatrou, Lars W. ;
Chen, Junhao ;
Choo, Le Min ;
Dagallier, Leo-Paul M. J. ;
Erkens, Roy H. J. ;
Johnson, David M. ;
Leeratiwong, Charan ;
Lobao, Adriana Q. ;
Lopes, Jenifer C. ;
Martinez-Velarde, Maria Fernanda ;
Munzinger, Jerome ;
Murray, Nancy A. ;
Neo, Wei Ling ;
Rakotoarinivo, Mijoro ;
Ortiz-Rodriguez, Andres E. ;
Sonke, Bonaventure ;
Thomas, Daniel C. ;
Wieringa, Jan J. ;
Couvreur, Thomas L. P. .
TAXON, 2024, 73 (06) :1341-1369