New records of Lamiaceae (subfamily Nepetoideae) from Central Africa with the description of five new species
Article Sidebar
Main Article Content
Abstract
Background: Subfamily Nepetoideae is the last subfamily of Lamiaceae not yet dealt with by the Flore d’Afrique centrale, and many specimens are still unidentified in the collections.
Objectives: To prepare the treatment of subfamily Nepetoideae (Coleus excluded) by analysing herbarium specimens.
Methods: Herbarium material from BR, BRLU, K and POZG was studied.
Results: Five species and one variety new to science are described (Equilabium mabwense, Fuerstia upembensis, Ocimum gnidioides, O. hirsutissimum var. paradoxum, Orthosiphon collinus, Plectranthus villosicaulis). Four new synonyms are proposed. A lectotype is designated for Ocimum fimbriatum. Fifteen taxa are reported as new to the Democratic Republic of Congo, two to Rwanda and one to Burundi. New records of rare taxa are also included.
Conclusion: Of the 26 taxa discussed in this note, 20 are found in Haut-Katanga, highlighting the region’s significant contribution to the diversity of Lamiaceae subfamily Nepetoideae in Central Africa.
Downloads
Article Details
This work is licensed under a Creative Commons Attribution 4.0 International License.
References
Ayobangira, F.-X., 1987, ‘Contribution à l’étude des Ocimoideae africaines: nouveaux taxa, et nouvelles combinaisons du genre Becium Lindley’, Etudes Rwandaises 1(3), 265–289.
Ayobangira, F.-X., 1990, ‘Contribution à l’étude des Lamiaceae africaines: systématique et phytogéographie des genres Ocimum L., Becium Lindl., Orthosiphon Benth. et Endostemon N.E.Br.’, PhD thesis, Université de Lille II (France).
Briquet, J., 1901, ‘Plectranthus intrusus’, in E. de Wildeman & T. Durand (eds.), Plantae Gilletianae congolenses, Bulletin de l’Herbier Boissier, sér. II, 1, 834.
Brown, N.E., Cook, T., Skan, S.A., 1910, ‘Labiatae’, in W.T. Thiselton-Dyer (ed.), Flora Capensis 5(1), 226–387, Lovell Reeve & Co., London.
De Wildeman, E., 1921, ‘Notes sur la Flore du Katanga’, VII. Annales de la Société scientifique de Bruxelles 41(2), 14–88
Meerts, P., 2022, ‘Labiatae – sous-familles IV. Scutellarioideae et V. Lamioideae’, Flore d’Afrique Centrale, nouvelle série, Jardin botanique, Meise.
Meerts, P., 2023, ‘Labiatae – sous-famille III. Ajugoideae’, Flore d’Afrique Centrale, nouvelle série, Jardin botanique, Meise.
Meerts, P.J. & Paton A.J., 2024, ‘The genus Coleus (Lamiaceae) in Central Africa (Democratic Republic of the Congo, Rwanda, Burundi), with the description of 15 new species’, Phytokeys 246, 71–178, https://doi.org/10.3897/phytokeys.246.129476.
Moldenke, H.N., 1953, ‘Notes on new and noteworthy plants’. XVI. Phytologia 4(4), 285–294.
Paton, A., 1993, ‘Notes on Fuerstia (Labiatae) in Tropical Africa’, Kew Bulletin 48, 129–137, https://doi.org/10.2307/4115757.
Paton, A., 1995, ‘The Genus Becium (Labiatae) in East Africa’, Kew Bulletin 50, 199–242, https://doi.org/10.2307/4110628.
Paton, A.J., Bramley, G., Ryding, O., Polhill, R.M., Harvey, Y.B., Iwarsson, M., Willis, F., Phillipson, P.B., Balkwill, K., Lukhoba, C.W., Otieno, D.F. & Harley, R.M., 2009, ‘Lamiaceae (Labiatae)’, in H.J. Beentje, S.A. Ghazanfar & R.M. Polhill (eds.), Flora of Tropical East Africa: 1–430, Royal Botanic Gardens, Kew.
Paton, A.J., Bramley, G., Ryding, O., Polhill, R.M., Harvey, Y.B., Iwarsson, M., Willis, F., Phillipson P.B., Balkwill K., Lukhoba C.W., Otieno D.F. & Harley R.M., 2013, ‘Lamiaceae’, in J.R. Timberlake & E.S. Martins (eds.), Flora Zambesiaca 8(8), 1–346, Royal Botanic Gardens, Kew.
Paton, A., Harley, M.M., Harley, R.M. & Weeks, S., 1994, ‘A revision of Endostemon (Labiatae)’, Kew Bulletin 49, 673–716, https://doi.org/10.2307/4118065.
Paton, A. & Meerts, P., 2020, ‘Labiatae – Introduction + subfam. Viticoideae & Premnoideae’, Flore d’Afrique Centrale, nouvelle série, Jardin botanique, Meise.
Paton, A.J., Mwanyambo M., Govaerts, R.H., Smith, A.K., Suddee, S., Phillipson, P.B., Wilson, T.C., Forster, P.I. & Culham, A., 2019, ‘Nomenclatural changes in Coleus and Plectranthus (Lamiaceae): a tale of more than two genera’, PhytoKeys 129, 1–158, https://doi.org/10.3897/phytokeys.129.34988.
Paton, A., Pollard, B.J. & Meerts, P., 2022, ‘Labiatae’, in M.S.M. Sosef, J. Florence, H.P. Bourobou Bourobou, & P. Bissiengou (eds.), Flore du Gabon 58, 1–111, Margraf Publishers, Weikersheim.
Plancke, J., 1959, ‘Le genre Becium et sa distribution au Katanga’, Mémoire de Licence, Université Libre de Bruxelles.
Polhill, R.M., 2009, ‘Isodon’, in H.J. Beentje, S.A. Ghazanfar & R.M. Polhill (eds.), Flora of Tropical East Africa, Lamiaceae, 1–430, Royal Botanic Gardens, Kew.
Robyns, W., 1947, Flore des Spermatophytes du Parc national Albert. II. Sympétales, Institut des Parcs Nationaux du Congo belge, Bruxelles.
Robyns, W., 1948, Les territoires phytogéographiques du Congo belge et du Ruanda-Urundi, Atlas Général du Congo belge, Institut Royal Colonial Belge, Bruxelles.
Sebald, O., 1988, ‘Die Gattung Becium Lindley (Lamiaceae) in Afrika und auf Arabischen Halbinsel, Teil 1’, Stuttgarter Beiträge zur Naturkunde Serie A, Biologie 419, 1–74.
Sebald, O., 1989, ‘Die Gattung Becium Lindley (Lamiaceae) in Afrika und auf Arabischen Halbinsel, Teil 2’, Stuttgarter Beiträge zur Naturkunde Serie A, Biologie, 437, 1–63.
Taylor, G., 1932, ‘Notes on the Labiatae. I’, Journal of Botany 70, 269–274.
Thiers, B., 2021, ‘Index Herbariorum: A global directory of public herbaria and associated staff: New York Botanical Garden’s Virtual Herbarium’, Available online: http://sweetgum.nybg.org/ih/, [accessed 1 Dec. 2021].
Troupin, G. & Ayobangira F.-X., 1985, ‘Lamiaceae’, in G. Troupin, (ed.), Flore du Rwanda, Spermatophytes, vol. 3, 294–356, Musée royal de l’Afrique centrale, Annales, Sér. in-8°, Sciences économiques 15.