Abstract
A new holoparasitic species of Orobanchaceae, Harveya kiangombensis, is here described and illustrated. This species is easily distinguished from the closely related H. liebuschiana by its glandular pubescent pedicels, the position of its flowers that occur singly in the leaf axils, and its acute calyx lobes. An assessment of the conservation status of the new species is provided.
References
Beentje, H.J. (1990) The forests of Kenya. In: Ihlanfeldt, H.-D. (ed.) Proceedings of the 12<sup>th</sup> Plenary Meeting of AETFAT, Symposium II. Mitteilungen aus dem Institut fur Allgemeine Botanik Hamburg 23a: 265–286.
ECG. (2019) Embu County Integrated Development Plan 2018–2022. Embu County Government. Available at: https://www.cog.go.ke/cog-reports/category/106-county-integrated-development-plans-2018–2022 (Accessed 2 February 2022)
Emerton, L. (1997) Livelihood values and conservation in Mount Kenya Forests. In: Doolan, S. (ed.) African rainforests and the conservation of biodiversity: proceedings of the Limbe Conference, Limbe Botanic Garden, Cameroon, 17–24 January 1997. Earthwatch Europe, Oxford.
Endlicher, S.F.L. (1841) Enciridion Botanicum. G. Engelmann, Leipzig, 736 pp. https://doi.org/10.5962/bhl.title.7559
Engler, H.G.A. (1894) Über die Gliederung der Vegetation von Usambara und der angrenzenden Gebiete. Abhandlungen der Koniglichen Akademie der Wissenschaften in Berlin 1894: 1–86. [https://www.biodiversitylibrary.org/page/29240986#page/55/mode/1up]
Ghazanfar, S.A., Hepper, F.N. & Philcox, D. (2008) Scrophulariaceae. In: Beentje, H.J. & Ghazanfar, S.A. (eds.) Flora of Tropical East Africa. Royal Botanic Gardens, Kew, 211 pp.
Groombridge, B. (ed.) (1992) Global biodiversity: status of Earth’s living resources. Compiled by World Conservation Monitoring Centre (WCMC). Chapman & Hall, London, UK, 594 pp.
Hemsley, W.B. & Skan, S.A. (1906) XCII. Scrophulariaceae: 46. Harveya. In: Thiselton-Dyer, W.T. (ed.) Flora of Tropical Africa 4 (2). L. Reeve & Co., London, pp. 435–438. [https://www.biodiversitylibrary.org/item/127#page/448/mode/1up]
Hochstetter, C.F.F. (1845) Flora oder Botanische Zeitung: welche Recensionen, Abhandlungen, Aufsätze, Neuigkeiten und Nachrichten, die Botanik betreffend, enthält. Vol. 28 (6). Die Gesellschaft, Regensburg, 234 pp. [https://www.biodiversitylibrary.org/page/40087#page/84/mode/1up]
Hooker, W.J. (1837) Icones Plantarum; or Figures, with brief descriptive characters and remarks of new or rare plants, Vol. 2. Longman, Rees, Orme, Brown, Green & Longman, London, 204 pp. https://doi.org/10.5962/bhl.title.16059
IUCN. (2012) IUCN Red List Categories and Criteria: Version 3.1. 2nd ed. Gland, Switzerland and Cambridge, UK.
Jacquin, N.J. von. (1801) Fragmenta botanica, figuris coloratis illustrata: ab anno 1800 ad annum 1809 per sex fasciculos edita 1. Mathiae Andreae Schmidt, Vienna, 86 pp., 138 figures. https://doi.org/10.5962/bhl.title.538
Meerts, P. (2018) Synopsis of the genus Vitex (Lamiaceae) in the Democratic Republic of the Congo. Plant Ecology & Evolution 151: 380–392. https://doi.org/10.5091/plecevo.2018.1504
Ngugi, G. (2007) Ethnobotanical survey of Kiang’ombe Forest, Kenya: Floristic inventory, utilisation and conservation status. M.Sc. Thesis, Kenyatta University, Nairobi, Kenya, 238 pp. [https://ir-library.ku.ac.ke/handle/123456789/1721?show=full]
Njuguna, P., Mbegera, M. & Mbithi, D. (1999) Reconnaissance survey of forest blocks in the west and east of the Rift Valley. Permanent Presidential Commission on Soil Conservation & Afforestation (PPCSCA), Nairobi, Kenya, 43 pp.
Riley, B.W. & Brokensha, D. (1988) The Mbeere in Kenya. Vol. 1: Changing rural ecology. University Press of America / Institute for Development Anthropology, London, UK, 384 pp.
Stevens, P.F. (2001 onwards) Angiosperm Phylogeny Website. Version 14, July 2017 [and more or less continuously updated since]. Available at: http://www.mobot.org/MOBOT/research/APweb/ (Accessed 9 December 2021)
Trofimov, D & Rohwer, J.G. (2020) Towards a phylogenetic classification of the Ocotea complex (Lauraceae): an analysis with emphasis on the Old World taxa and description of the new genus Kuloa. Botanical Journal of the Linnean Society 192 (3): 510–535. https://doi.org/10.1093/botlinnean/boz088
Turrill, W.B. (1915) II. Diagnoses Africanae: LXII. Vitex keniensis. Bulletin of Miscellaneous Information, Kew 1915 (1): 47–48. [https://www.biodiversitylibrary.org/page/11492562#page/53/mode/1up]
Vahl, M. (1790) Symbolae Botanicae. Vol. 1. N. Mo?ller & Sons, Copenhagen, 85 pp. and 25 plates. https://doi.org/10.5962/bhl.title.57641
ECG. (2019) Embu County Integrated Development Plan 2018–2022. Embu County Government. Available at: https://www.cog.go.ke/cog-reports/category/106-county-integrated-development-plans-2018–2022 (Accessed 2 February 2022)
Emerton, L. (1997) Livelihood values and conservation in Mount Kenya Forests. In: Doolan, S. (ed.) African rainforests and the conservation of biodiversity: proceedings of the Limbe Conference, Limbe Botanic Garden, Cameroon, 17–24 January 1997. Earthwatch Europe, Oxford.
Endlicher, S.F.L. (1841) Enciridion Botanicum. G. Engelmann, Leipzig, 736 pp. https://doi.org/10.5962/bhl.title.7559
Engler, H.G.A. (1894) Über die Gliederung der Vegetation von Usambara und der angrenzenden Gebiete. Abhandlungen der Koniglichen Akademie der Wissenschaften in Berlin 1894: 1–86. [https://www.biodiversitylibrary.org/page/29240986#page/55/mode/1up]
Ghazanfar, S.A., Hepper, F.N. & Philcox, D. (2008) Scrophulariaceae. In: Beentje, H.J. & Ghazanfar, S.A. (eds.) Flora of Tropical East Africa. Royal Botanic Gardens, Kew, 211 pp.
Groombridge, B. (ed.) (1992) Global biodiversity: status of Earth’s living resources. Compiled by World Conservation Monitoring Centre (WCMC). Chapman & Hall, London, UK, 594 pp.
Hemsley, W.B. & Skan, S.A. (1906) XCII. Scrophulariaceae: 46. Harveya. In: Thiselton-Dyer, W.T. (ed.) Flora of Tropical Africa 4 (2). L. Reeve & Co., London, pp. 435–438. [https://www.biodiversitylibrary.org/item/127#page/448/mode/1up]
Hochstetter, C.F.F. (1845) Flora oder Botanische Zeitung: welche Recensionen, Abhandlungen, Aufsätze, Neuigkeiten und Nachrichten, die Botanik betreffend, enthält. Vol. 28 (6). Die Gesellschaft, Regensburg, 234 pp. [https://www.biodiversitylibrary.org/page/40087#page/84/mode/1up]
Hooker, W.J. (1837) Icones Plantarum; or Figures, with brief descriptive characters and remarks of new or rare plants, Vol. 2. Longman, Rees, Orme, Brown, Green & Longman, London, 204 pp. https://doi.org/10.5962/bhl.title.16059
IUCN. (2012) IUCN Red List Categories and Criteria: Version 3.1. 2nd ed. Gland, Switzerland and Cambridge, UK.
Jacquin, N.J. von. (1801) Fragmenta botanica, figuris coloratis illustrata: ab anno 1800 ad annum 1809 per sex fasciculos edita 1. Mathiae Andreae Schmidt, Vienna, 86 pp., 138 figures. https://doi.org/10.5962/bhl.title.538
Meerts, P. (2018) Synopsis of the genus Vitex (Lamiaceae) in the Democratic Republic of the Congo. Plant Ecology & Evolution 151: 380–392. https://doi.org/10.5091/plecevo.2018.1504
Ngugi, G. (2007) Ethnobotanical survey of Kiang’ombe Forest, Kenya: Floristic inventory, utilisation and conservation status. M.Sc. Thesis, Kenyatta University, Nairobi, Kenya, 238 pp. [https://ir-library.ku.ac.ke/handle/123456789/1721?show=full]
Njuguna, P., Mbegera, M. & Mbithi, D. (1999) Reconnaissance survey of forest blocks in the west and east of the Rift Valley. Permanent Presidential Commission on Soil Conservation & Afforestation (PPCSCA), Nairobi, Kenya, 43 pp.
Riley, B.W. & Brokensha, D. (1988) The Mbeere in Kenya. Vol. 1: Changing rural ecology. University Press of America / Institute for Development Anthropology, London, UK, 384 pp.
Stevens, P.F. (2001 onwards) Angiosperm Phylogeny Website. Version 14, July 2017 [and more or less continuously updated since]. Available at: http://www.mobot.org/MOBOT/research/APweb/ (Accessed 9 December 2021)
Trofimov, D & Rohwer, J.G. (2020) Towards a phylogenetic classification of the Ocotea complex (Lauraceae): an analysis with emphasis on the Old World taxa and description of the new genus Kuloa. Botanical Journal of the Linnean Society 192 (3): 510–535. https://doi.org/10.1093/botlinnean/boz088
Turrill, W.B. (1915) II. Diagnoses Africanae: LXII. Vitex keniensis. Bulletin of Miscellaneous Information, Kew 1915 (1): 47–48. [https://www.biodiversitylibrary.org/page/11492562#page/53/mode/1up]
Vahl, M. (1790) Symbolae Botanicae. Vol. 1. N. Mo?ller & Sons, Copenhagen, 85 pp. and 25 plates. https://doi.org/10.5962/bhl.title.57641