| Khan, SA; Razafimandimbison, SG; Bremer, B; Liede-Schumann, S: Phylogeny and biogeography of the African genus Virectaria Bremek. (Sabiceeae s.l., Ixoroideae, Rubiaceae), Plant Systematics and Evolution, 275(1-2), 43-58 (2008), doi:10.1007/s00606-008-0053-8 | |
| Abstract: The phylogenetic relationships of the tropical African genus Virectaria with its associated genera within the tribe Sabiceeae s.l. (Ixoroideae and Rubiaceae) were inferred from the combined analysis of nuclear ITS and chloroplast rpoC1 and trnT-F nucleotide sequence data. Phylogenetic relationships within Virectaria were investigated using combined analyses of ETS (nrDNA), ITS, rpoC1 and trnT-F sequence data. The present analyses further show that Hekistocarpa is sister to the Tamridaea– Virectaria–Sabicea clade, Tamridaea and Virectaria are sister genera, and Sabicea s.l. is sister to the Tamridaea– Virectaria clade. Our results strongly support the monophyly of Virectaria and the sister-group relationships between V. multiflora and V. herbacoursi, V. angustifolia and V. procumbens, and V. major and V. belingana. Our analyses indicate a tropical African origin for Sabiceeae s.l., a long isolated evolution for Tamridaea and a wide range of dispersal of Virectaria species in the Lower-Guinean, Upper-Guinean and Congolian regions, without a clearly defined direction of migration. |
Upcoming ...
Upcoming ...
| BayCEER Colloquium: |
|---|
| Th. 2024-04-25 now Perspectives and challenges in the restoration and conservation of two isolated habitats: gypsum and cliffs |
| BayCEER Short Courses: |
| Fr. 2024-04-26 Mobile Film Making Workshop (for students of BayCEER) |
| Ecological-Botanical Garden: |
| Fr. 2024-04-26 Aktion | Kräuterreich & regional: Backkunst im ÖBG (zus. mit HWK) |
| Fr. 2024-04-26 Führung | Erdbeer-Minze und Zimmerknoblauch: Gewürzkräuter |
| Su. 2024-04-28 Führung | Den Sängern auf der Spur: Vogelstimmen im ÖBG (zus. mit LBV) |