Three new species of Uvariodendron (Annonaceae) from coastal East Africa in Kenya and Tanzania Author Dagallier, Leo-Paul M. J. https://orcid.org/0000-0002-3270-1544 DIADE, Univ Montpellier, IRD, CIRAD, Montpellier, France leo-paul.dagallier@ird.fr Author Mbago, Frank M. The Herbarium, Botany Department, Box 35060, University of Dar es Salaam, Dar es Salaam, Tanzania Author Luke, W. R. Quentin East African Herbarium, National Museums of Kenya, P. O. Box 45166 00100, Nairobi, Kenya Author Couvreur, Thomas L. P. https://orcid.org/0000-0002-8509-6587 DIADE, Univ Montpellier, IRD, CIRAD, Montpellier, France & Pontificia Universidad Catolica del Ecuador, Facultad de Ciencias Exactas y Naturales Av. 12 de Octubre 1076 y Roca, Quito, Ecuador text PhytoKeys 2021 2021-03-12 174 107 126 http://dx.doi.org/10.3897/phytokeys.174.61630 journal article http://dx.doi.org/10.3897/phytokeys.174.61630 1314-2003-174-107 DE748F63828352229E34CB5093C8EB08 Polyceratocarpus oligocarpus (Verdc.) Dagallier comb. nov. Uvariodendron oligocarpum Verdcourt, Kew Bulletin 41(2): 289, 1986. Type . Tanzania - Tanga • J . Lovett 259 ( holotype : K ( K000198888 )); Lushoto District , Ambangulu , West Usambara ; alt. 1300 m ; 2 Mar. 1984 . We examined 11 specimens (including the type specimen) of Uvariodendron oligocarpum Verdc. and found they have percurrent tertiary venation and pitted seeds. These characteristics are typical of the genus Polyceratocarpus Engl. & Diels ( Couvreur et al. 2009 , 2012 ). Moreover, the fertile specimens observed have the combination of the following characters: outer petals ca. 35 mm long, 3 to 6 carpels, and 2 to 4 cylindrical and straight to slightly curved monocarps. This combination precludes these specimens from being identified as one of the two other species known from East Africa to date: Polyceratocarpus scheffleri Engl. & Diels that has "at least 20 [and] strongly curved" monocarps ( Verdcourt 1971 ), and Polyceratocarpus askhambryan-iringae A . R . Marshall & D. M . Johnson that has outer petals 10-16 mm long ( Marshall et al. 2016 ). Based on the above characters, they also cannot be included in any other accepted species from Central or West Africa that all have petals shorter than 25 mm long: Polyceratocarpus angustifolius Paiva and P. germanii Boutique, P. gossweileri (Excell) Paiva, P. laurifolius Paiva, P. microtrichus (Engl. & Diels) Ghesq. ex Pellegr., P. parviflorus Ghesq., and P. pellegrinii Le Thomas ( Pellegrin 1949 , Boutique 1951 , Le Thomas 1965 , Paiva 1966 ). Thus, this species initially described as Uvariodendron oligocarpum Verdc. is here combined as Polyceratocarpus oligocarpus (Verdc.) Dagallier. Other specimen examined. Tanzania - Tanga • A . Borhidi 86249 ( K ); Muheza District , East Usambaras Mts. , Kwamkoro F . R . SE of Kwamkoro Tea Estate ; alt. 1030 m ; 28 Oct. 1986 . • A . Borhidi 87241 ( K ); Muheza District , East Usambaras Mts. , Kwamkoro F . R . bordering Kwamsambia F . R ; alt. 990 m ; 05 May. 1987 . • L .- P . M . J . Dagallier 63 ( DSM , K , MPU ( MPU1379122 ), P , WAG ); Korogwe District , East Usambaras , Ambangulu , top of the mountain above the tea plantations; 5°04'13.00"S , 38°24'31.00"E ; alt. 1320 m ; 20 Nov. 2019 . • A . R . Marshall 1457 ( K , MO ); Lushoto District , Ambangulu - PSP19 , Ambangulu Tea Estate Forest , West Usambara Mountains ; 5°4'20.69"S , 38°24'24.21"E ; alt. 1294 m ; 22 Mar. 2008 . • A . R . Marshall 1695 ( K ); Lushoto District , Ambangulu - PSP19 , Ambangulu Tea Estate Forest , West Usambara Mountains ; 5°4'20.69"S , 38°24'24.21"E ; alt. 1294 m ; 24 Mar. 2008 . • F . M . Mbago 3586 ( DSM ); Lushoto District , Balangai forest near Tea estate; 4°56'41.24"S , 38°26'42.10"E ; alt. 1505 m ; 28 Jul. 2012 . • F . M . Mbago 3760 ( DSM ), Korogwe Kunga Forest Mavimo Kwemtonto; 3°20'37.15"S , 37°19'46.06"E ; alt. 898 m ; 23 Nov. 2016 . • C . K . Ruffo 1730 ( K ); Muheza District , Kwamkoro F . R ; alt. 950 m ; 28 Oct. 1986 . • C . K . Ruffo 1747 ( K ); Muheza District , Kwamkoro F . R ; alt. 1000 m ; 31 Jan. 1987 . • C . K . Ruffo 1835 ( K ); Muheza District , Kwamkoro F . R ; alt. 1050 m ; 18 Sep. 1986 .