Abstract
Cystostemon heliocharis (Boraginaceae), previously known from Yemen and Somalia, is reported from Ethiopia, and a photograph of the species is provided. Trichodesma stocksii (Boraginaceae), previously known from Pakistan, Iran, and Oman, is reported from Yemen, and a drawing based on a Yemeni collection is provided. Clerodendrum hildebrandtii (Lamiaceae), previously known from Somalia, Kenya, Tanzania, and Mozambique, is reported from Ethiopia, based on a photographic record. Distribution maps showing the total distribution of these three species are presented.
References
<p>Abdallah, M.S. (1967) The Resedaceae. A taxonomical revision of the family. Mededelingen van de Landbouwhogeschool Wageningen 67–8: 1–98.<br>Baker, J.G. & Moore, S. Le M. (1877) Descriptive notes on a few of Hildebrandtʼs East African plants. Journal of Botany 15: 65–72.<br>Balfour, I.B. (1884) Diagnoses plantarum novarum phanerogamarum Socotrensium, etc. Pars tertia. Proceedings of the Royal Society of Edinburgh 12: 76–98. https://doi.org/10.1017/S0370164600000195<br>Boissier, E. (1856) Diagnoses plantarum orientalium novarum, ser. 2, 3 (3). B. Herrmann, Leipzig, pp. 1–177. https://bibdigital.rjb.csic.es/idurl/1/10696<br>Boissier, E. (1879) Flora orientalis 4(2). H. Georg, Genève, Basel, Lyon, pp. 281–1276. https://doi.org/10.5962/bhl.title.20323<br>De Candolle, A. (1846) Trichodesma. In: De Candolle, A. (Ed.) Prodromus systematis naturalis regni vegetabilis 10. Masson, Paris, pp. 171–174. [https://www.biodiversitylibrary.org/item/7159#page/177/mode/1up]<br>Fernandes, R. (2005) Lamiaceae (subfams. Viticoideae and Ajugoideae). In: Pope, G.V. & Martins, E.S. (Eds.) Flora Zambesiaca, vol. 8 (7). Royal Botanic Gardens, Kew, pp. 61–153.<br>Ghazanfar, S.A. (2015) Flora of the Sultanate of Oman, vol. 3, Loganiaceae–Asteraceae. Scripta Botanica Belgica 55: 1–386.<br>Kazmi, S.M.A. (1971) A revision of the Boraginaceae of West Pakistan and Kashmir (continued). Journal of the Arnold Arboretum 52: 486–522. [https://www.biodiversitylibrary.org/item/41808#page/496/mode/1up]<br>Khatamsaz, M. (2002) Boraginaceae. In: Assadi, M., Maassoumi, A.A. & Khatamsaz, M. (Eds.) Flora of Iran 39. Research Institute of Forests and Rangelands, Iran, pp. 1–504.<br>Martins, E.S. (1988a) Cystostemon loveridgei E.S.Martins and C. mwinilungensis E.S.Martins. Garcia de Orta, Série de Botânica 9 (1–2): 75.<br>Martins, E.S. (1988b) Cystostemon linearifolius E.S.Martins. Garcia de Orta, Série de Botânica 10 (1–2): 17.<br>Miller, A.G. & Riedl, H. (1982) A revision of Cystostemon Balf.f. (Boraginaceae). Notes from the Royal Botanic Garden Edinburgh 40: 1–21.<br>Mosti, S. & Selvi, F. (2007) Trichodesma cinereum Mosti & Selvi (Boraginaceae), a new species from Oman. Candollea 62 (2): 205–210.<br>Mozaffarian, V. (1985) New species and new plant records from Iran. Iranian Journal of Botany 3: 81–86.<br>Nasir, Y.J. (1989) Boraginaceae. In: Ali, S.I. & Nasir, Y.J. (Eds.) Flora of Pakistan 191. PanGraphics, Islamabad, pp. 1–200.<br>Patzelt, A., Al Hatmi, S., Al Hinai, A., Al Qassabi, A. & Knees, S.G. (2020) Studies in the flora of Arabia: XXXIV. Sixty new records from the Sultanate of Oman. Edinburgh Journal of Botany 77 (3): 413–437. https://doi.org/10.1017/S0960428620000086<br>Riedl, H. (1967) Boraginaceae. In: Rechinger, K.H. (Ed.) Flora Iranica 48. Akademische Druck- und Verlagsanstalt, Graz, pp. 1–281.<br>Riedl, H. & Edwards, S. (2006) Boraginaceae. In: Hedberg, I., Ensermu Kelbessa, Edwards, S. & Sebsebe Demissew (Eds.) Flora of Ethiopia and Eritrea, vol. 5. The National Herbarium, Addis Ababa and Department of Systematic Botany, Uppsala, pp. 64–102.<br>Schwartz, O. (1939) Flora des tropischen Arabien. Mitteilungen aus dem Institut für allgemeine Botanik in Hamburg 10: 1–393.<br>Thulin, M. (1994) A new species of Tephrosia (Leguminosae) from southern Yemen, with a note on the identity of T. geminiflora. Nordic Journal of Botany 14 (5): 487–489. https://doi.org/10.1111/j.1756-1051.1994.tb00639.x<br>Thulin, M. (1996) Indigofera rubromarginata sp. nov. (Leguminosae) from southern Arabia, with a note on I. eremophila. Nordic Journal of Botany 15: 519–521. https://doi.org/10.1111/j.1756-1051.1995.tb00187.x<br>Thulin, M. (2004) Horn of Africa. In: Mittermeier, R.A., Robles Gil, P., Hoffmann, M., Pilgrim, J., Brooks, T., Goettsch Mittermeier, C., Lamoreux, J. & Da Fonseca, G.A.B. (Eds.) Hotspots revisited: Earthʼs richest and most endangered ecoregions. Cemex, Mexico City, pp. 276–283.<br>Thulin, M. (2006a) Cystostemon. In: Thulin, M. (Ed.) Flora of Somalia, vol. 3. Royal Botanic Gardens, Kew, pp. 53–54.<br>Thulin, M. (2006b) Clerodendrum. In: Thulin, M. (Ed.) Flora of Somalia, vol. 3. Royal Botanic Gardens, Kew, pp. 313–315.<br>Vatke, W. (1882) Plantas in itinere africano ab J.M. Hildebrandt collectas determinare pergit. Linnaea 43: 507–541. [https://www.biodiversitylibrary.org/item/10891#page/530/mode/1up]<br>Verdcourt, B. (1992) Verbenaceae. In: Polhill, R.M. (Ed.) Flora of tropical East Africa. A.A. Balkema, Rotterdam/Brookfield, pp. 1–155.</p>