Research Interests: Zoology, Biology, Ecology, Kenya, Habitat, and 4 moreTephritidae, Indigenous, Ceratitis Capitata, and Hosts
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... QUENTIN LUKE1 & HENK BEENTJE2 ... tenuioribus dentibus angustioribus magisque distantibus, capitulis minus numerosis, phyllariis pubescentibus (non glabris) apice magis attenuatis, lobis corollae pilis carentibus, setis... more
... QUENTIN LUKE1 & HENK BEENTJE2 ... tenuioribus dentibus angustioribus magisque distantibus, capitulis minus numerosis, phyllariis pubescentibus (non glabris) apice magis attenuatis, lobis corollae pilis carentibus, setis papporum teretibus (non complanatis) bene distincta. ...
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The phylogeny of Vitaceae was reconstructed sampling 114 accessions of Vitaceae and the outgroup Leea of Leeaceae, using three noncoding plastid markers: trnC‐petN, trnH‐psbA, and trnL‐F. Six 5‐merous genera including Parthenocissus, Yua,... more
The phylogeny of Vitaceae was reconstructed sampling 114 accessions of Vitaceae and the outgroup Leea of Leeaceae, using three noncoding plastid markers: trnC‐petN, trnH‐psbA, and trnL‐F. Six 5‐merous genera including Parthenocissus, Yua, Ampelocissus, Vitis, Nothocissus, and Pterisanthes form a well‐supported clade. Ampelopsis, Rhoicissus, and the Cissus striata complex form a clade sister to the clade containing all the other taxa of Vitaceae. The core Cissus clade is resolved to be sister to the Cayratia‐Tetrastigma‐Cyphostemma clade, forming a clade of taxa with 4‐merous flowers. The Parthenocissus‐Yua clade is sister to the Ampelocissus‐Vitis‐Nothocissus‐Pterisanthes clade. The Old World Cissus is paraphyletic, with the New World core Cissus nested within it. The intercontinental disjunction between Africa and Asia may have evolved at least twice in Cissus. Cayratia is paraphyletic with four Asian species sampled grouping with Tetrastigma and the African species forming another clade.
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Research Interests: Geography, East Africa, Habitat, Acacia, Liverworts, and 4 moreCAPE, Bryophyte, Mosses, and Montane Ecology
... Engl., Pavetta hymenophylla Bremek., Arundinaria alpina K. Schum., Clutia paxii Knauf, Rourea thomsonii (Baker) Jongkind, Psychotria diploneura (K. Schum.) Bridson & Verdc., Discopodium penninervium Hochst., Rytigynia... more
... Engl., Pavetta hymenophylla Bremek., Arundinaria alpina K. Schum., Clutia paxii Knauf, Rourea thomsonii (Baker) Jongkind, Psychotria diploneura (K. Schum.) Bridson & Verdc., Discopodium penninervium Hochst., Rytigynia sp., Piper capense Lf ... Tamás Pócs and Quentin Luke ...
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The Crepidorhopalon whytei (Linderniaceae) species complex is revised using morphological analyses. Based primarily on variations in indumentum, floral morphology, corolla colour and seed morphology, four species are formally recognised... more
The Crepidorhopalon whytei (Linderniaceae) species complex is revised using morphological analyses. Based primarily on variations in indumentum, floral morphology, corolla colour and seed morphology, four species are formally recognised within this group in eastern Africa. Crepidorhopalon whytei s.str. is widespread in the highlands of eastern Africa, extending from South Sudan and Ethiopia in the north through to western Tanzania in the south. A new combination in Crepidorhopalon is made for Lindernia flava (= C. flavus), which is confined to the Manica Highlands of the Mozambique-Zimbabwe border. Two new species are described, C. namuliensis which is known only from Mt Namuli in northern Mozambique and C. kwaleensis which is known only from the coastal lowlands of southeast Kenya. A fifth, imperfectly known species is documented from the Nguru Mountains of Tanzania where it is so far known from a single collection. Three names are lectotypified. The habitat requirements and distri...
Research Interests: Plant Biology and Biology
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SummaryCalophyllum africanum Cheek & Q. Luke is described and illustrated from Mali, in that part close to the Fouta Djalon of Guinea. Plant species present in its gallery forest habitat are listed in detail. Threatened by gold and... more
SummaryCalophyllum africanum Cheek & Q. Luke is described and illustrated from Mali, in that part close to the Fouta Djalon of Guinea. Plant species present in its gallery forest habitat are listed in detail. Threatened by gold and uranium mining activities, C. africanum is here assessed as Critically Endangered according to the categories and criteria of IUCN. This is the first native Calophyllum known from continental Africa apart from the indo-pacific littoral C. inophyllum. The affinities of C. africanum appear to lie with the Neotropics and it is most similar to the Caribbean species C. antillanum.
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... In B. Barnes (ed.), Proceedings of the 6th International Symposium of Fruit Flie of Economic Importance. Isteg Scientific Publications, Irene, South Africa. Pp. 4553. Drew, RAI (1987). ... Journal of Ecology 68: 929952. CrossRef.... more
... In B. Barnes (ed.), Proceedings of the 6th International Symposium of Fruit Flie of Economic Importance. Isteg Scientific Publications, Irene, South Africa. Pp. 4553. Drew, RAI (1987). ... Journal of Ecology 68: 929952. CrossRef. Kimani-Njogu, SW & RA Wharton (2002). ...
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SummaryA new species of Barleria (Acanthaceae), discovered in 2014 on the Uzondo Plateau of West Tanzania, is described and illustrated and its affinities are discussed. This is the first documented tree species in the genus Barleria. Its... more
SummaryA new species of Barleria (Acanthaceae), discovered in 2014 on the Uzondo Plateau of West Tanzania, is described and illustrated and its affinities are discussed. This is the first documented tree species in the genus Barleria. Its conservation status is assessed using the categories and criteria of IUCN; it is considered to be globally Vulnerable.
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East Africa is a hotspot of biodiversity with many endemic plant species. We describe three new species of the genus Uvariodendron (Annonaceae) from the coastal forests of Kenya and Tanzania. Uvariodendron mbagoi Dagallier & Couvreur, sp.... more
East Africa is a hotspot of biodiversity with many endemic plant species. We describe three new species of the genus Uvariodendron (Annonaceae) from the coastal forests of Kenya and Tanzania. Uvariodendron mbagoi Dagallier & Couvreur, sp. nov. is endemic to Tanzania and unique within the genus by its strong bergamot scent and its tomentose fruits having regular tufts of higher hair density. Uvariodendron dzomboense Dagallier, W.R.Q. Luke & Couvreur, sp. nov. is endemic to Dzombo Hill in Kenya and is rendered distinct by its small leaves and very densely pubescent carpels. Uvariodendron schmidtii W.R.Q. Luke, Dagallier & Couvreur, sp. nov. is endemic to Shimba Hills in Kenya and differs by its small flowers and fused sepals forming a ring. Following IUCN criteria we assessed U. mbagoi and U. dzomboense as endangered (EN) while U. schmidtii is assessed as Vulnerable (VU). We also propose a new combination: Polyceratocarpus oligocarpus (Verdc.) Dagallier, comb. nov. The description of ...
Research Interests: Geography, Biology, Endemism, Tanzania, Endangered Species, and 3 moreMedicine, IUCN Red List, and Annonaceae
This book presents the results of the IUCN Red List evaluation of all 347 tree taxa with a distribution confined to, or almost confined to, Central Africa (Democratic Republic of the Congo – Rwanda – Burundi). As such, it is part of a... more
This book presents the results of the IUCN Red List evaluation of all 347 tree taxa with a distribution confined to, or almost confined to, Central Africa (Democratic Republic of the Congo – Rwanda – Burundi). As such, it is part of a global endeavour involving over 60 organisations coordinated by Botanic Gardens Conservation International (BGCI), and culminating in the Global Tree Assessment. <br> Endangered animals generally attract lots of attention, but trees are far more vulnerable. There are nearly 60,000 tree species recognised worldwide, and we now know that 30% (17,500 species) are threatened with extinction. This is higher than the number of all threatened mammals, birds, amphibians, and reptiles combined! <br> The data on the 347 Central African trees presented here shows that 221 (64%) of them are at risk of extinction. Of these, 34 (10%) are critically endangered, of which 25 may already be extinct. Agriculture, livestock farming, and logging are the main gl...
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Few studies have addressed the terraces adjacent to the Tana River and delta. In May 2012 a survey assessed the woody vegetation of the terraces in anticipation of their conversion to a biofuel farm. The 64 000 hectares targeted by... more
Few studies have addressed the terraces adjacent to the Tana River and delta. In May 2012 a survey assessed the woody vegetation of the terraces in anticipation of their conversion to a biofuel farm. The 64 000 hectares targeted by Bedford Biofuels for clearing for Jatropha curcas would have released over 1 million Mg of carbon at a social cost of the order of US$36 million. The lease agreement set the payment to the communities at US$0.75 per hectare per year, i.e. about US$100 000 annually. The intact terraces are a resource for famine food, fodder, traditional medicine for humans and livestock, firewood, fencing and housing, but are especially important for pastoralist communities at the beginning of the dry season when waiting for the deltaic floodplain pastures to become accessible. They are also important migratory routes for wildlife, including elephants, dispersing to and from the Tsavo ecosystem. It is unlikely that the communities would have derived substantial benefits from conversion. Maintaining and even improving the carbon storage on these semi-arid lands would therefore be a better option, especially if compensation was available through the Reducing Emissions from Deforestation and Forest Degradation (REDD+) programme. The biofuel company has since abandoned the project.
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Go to AGRIS search. Kenya Coastal Forests. ...
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The flora of Sango Bay (Uganda) and Minziro (Tanzania) is discussed: these areas comprise the floodplain of a river, with a mixed vegetation influenced by a flat relief and relatively high moisture through regular flooding. Protection is... more
The flora of Sango Bay (Uganda) and Minziro (Tanzania) is discussed: these areas comprise the floodplain of a river, with a mixed vegetation influenced by a flat relief and relatively high moisture through regular flooding. Protection is only partial, which is of concern as the sites form an area of high biodiversity with high conservation value, and several rare and/or (near-)endemic plant species. Both areas are proposed as Important Plant Areas, and a checklist of plant species is provided.
In this data paper, we present a specimen-based occurrence dataset compiled in the framework of the Conservation of Endemic Central African Trees (ECAT) project with the aim of producing global conservation assessments for the IUCN Red... more
In this data paper, we present a specimen-based occurrence dataset compiled in the framework of the Conservation of Endemic Central African Trees (ECAT) project with the aim of producing global conservation assessments for the IUCN Red List. The project targets all tree species endemic or sub-endemic to the Central African region comprising the Democratic Republic of the Congo (DR Congo), Rwanda, and Burundi. The dataset contains 6361 plant collection records with occurrences of 8910 specimens from 337 taxa belonging to 153 genera in 52 families. Many of these tree taxa have restricted geographic ranges and are only known from a small number of herbarium specimens. As assessments for such taxa can be compromised by inadequate data, we transcribed and geo-referenced specimen label information to obtain a more accurate and complete locality dataset. All specimen data were manually cleaned and verified by botanical experts, resulting in improved data quality and consistency.
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Figure 2 from: Tack W, Engledow H, Veríssimo Pereira N, Amani C, Bachman SP, Barberá P, Beentje HJ, Bouka GUD, Cheek M, Cosiaux A, Dauby G, De Block P, Ewango CEN, Fischer E, Gereau RE, Hargreaves S, Harvey-Brown Y, Ikabanga DU, Ilunga wa Ilunga E, Kalema J, Kamau P, Lachenaud O, Luke Q, Mwanga M...more
Figure 1 from: Tack W, Engledow H, Veríssimo Pereira N, Amani C, Bachman SP, Barberá P, Beentje HJ, Bouka GUD, Cheek M, Cosiaux A, Dauby G, De Block P, Ewango CEN, Fischer E, Gereau RE, Hargreaves S, Harvey-Brown Y, Ikabanga DU, Ilunga wa Ilunga E, Kalema J, Kamau P, Lachenaud O, Luke Q, Mwanga M...more
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Following a review of the circumscription of the genus Cladoceras Bremek. (Rubiaceae) in relation to Tarenna Gaertn., the new species Cladoceras rovumense I.Darbysh., J.E.Burrows & Q.Luke sp. nov. is described from the dry forests of the... more
Following a review of the circumscription of the genus Cladoceras Bremek. (Rubiaceae) in relation to Tarenna Gaertn., the new species Cladoceras rovumense I.Darbysh., J.E.Burrows & Q.Luke sp. nov. is described from the dry forests of the Rovuma Centre of Plant Endemism (CoE) in southeast Tanzania and northeast Mozambique. This species has previously been known as Tarenna sp. 53, following the revision of African Tarenna by Jérôme Degreef. A comparison to Cladoceras subcapitatum (K.Schum. & K.Krause) Bremek., the only other member of this genus as currently circumscribed, is provided. The new species is assessed as Endangered under the criteria of the IUCN Red List. New records for Mozambique of two further Rovuma CoE endemics are recorded: Celosia patentiloba C.C.Towns. (Amaranthaceae) and Cordia fissistyla Vollesen (Boraginaceae), both of which are globally threatened.