Salvator Ntore

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University Of Kinshasa

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Papers by Salvator Ntore

Flore d'Afrique centrale - Spermatophyta - Rubiaceae, Tribu XVI. Colletoecemateae à XVIII. Lasiantheae

Zenodo (CERN European Organization for Nuclear Research), Apr 1, 2020

A regional flora treatment, covering the Democratic Republic of the Congo, Rwanda and Burundi, is... more A regional flora treatment, covering the Democratic Republic of the Congo, Rwanda and Burundi, is provided for three tribes of the Rubiaceae family: Colletoecemateae (one genus, Colletoecema, with one species in the area), Lasiantheae (two genera, Lasianthus and Trichostachys, with six species) and Urophylleae (two genera, Pauridiantha and Pentaloncha, with 15 species). This volume thus deals with five genera and 22 species; one species, Pauridiantha halleana Ntore & O.Lachenaud, is described as new, two new combinations are published, and several new synonymies are established. All 22 species treated in this volume occur in the Democratic Republic of the Congo, where four are endemic; Rwanda and Burundi have 3 species each, none endemic. Keys to all the taxa are provided. For every species, a full morphological description is presented, as well as data on their distribution, habitat, vernacular names and uses, a list of representative herbarium specimens, and bibliographic references. All species are illustrated with line drawings and, when available, colour photographs. 10 RUBIACEAE-XVII. Urophylleae

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Two new species and a new combination in the genus Pauridiantha Hook.f. (Rubiaceae) from tropical Africa

Adansonia, Apr 8, 2019

ABSTRACT A morphological study of the monospecific genus Rhipidantha Bremek. from Tanzania leads ... more ABSTRACT A morphological study of the monospecific genus Rhipidantha Bremek. from Tanzania leads to its inclusion in Pauridiantha Hook.f.; a new combination, Pauridiantha chlorantha (K.Schum.) Ntore & O.Lachenaud, sp. nov., is therefore published, and a full description of this hitherto little-known species is provided. Two new Pauridiantha species from Atlantic Central Africa are also described and illustrated: Pauridiantha gracilipes O.Lachenaud & Ntore, sp. nov. and Pauridiantha principensis Ntore & O.Lachenaud, sp. nov. The former species is endemic to the Ogooué delta in Gabon, and resembles P. liebrechtsiana (De Wild. & T.Durand) Ntore & Dessein, but differs by the 2-locular ovary, the very long fruiting pedicels (12-18 mm) and the frequent presence of spines on the older stems – the last two characters being unique in the genus. The second species is endemic to Príncipe island, and differs from P. insularis (Hiern) Bremek., from the neighbouring island of São Tomé, by the more ascending secondary leaf veins lacking domatia in their axils, longer pedicels, and glabrous stipules. The conservation status of all three species is evaluated acccording to IUCN criteria: P. chlorantha (K.Schum.) Ntore & O.Lachenaud, comb. nov. is assessed as Endangered, P. gracilipes O.Lachenaud & Ntore, sp. nov. as Critically Endangered, and P. principensis Ntore & O.Lachenaud, sp. nov. as Near-threatened. Finally, Pauridiantha microphylla R.D.Good is placed into synonymy of P. canthiiflora Hook.f.

Genetic diversity of wild and cultivated<i>Coffea</i>canephora in northeastern DR Congo and the implications for conservation

bioRxiv (Cold Spring Harbor Laboratory), Aug 10, 2021

PremiseMany cultivated coffee varieties descend from Coffea canephora, commonly known as Robusta ... more PremiseMany cultivated coffee varieties descend from Coffea canephora, commonly known as Robusta coffee. The Congo Basin has a century long history of Robusta coffee cultivation and breeding, and is hypothesized to be the region of origin of many of the cultivated Robusta varieties. Since little is known about the genetic composition of C. canephora in this region, we assessed the genetic diversity of wild and cultivated C. canephora shrubs in the Democratic Republic of the Congo.MethodsUsing 18 microsatellite markers, we studied the genetic composition of wild and backyard-grown C. canephora shrubs in the Tshopo and Ituri provinces, and from the INERA Yangambi Coffee Collection. We assessed genetic clustering patterns, genetic diversity, and genetic differentiation between populations.Key resultsGenetic differentiation was relatively strong between wild and cultivated C. canephora shrubs, and both gene pools harbored multiple unique alleles. Strong genetic differentiation was also observed between wild populations. The level of genetic diversity in wild populations was similar to that of the INERA Yangambi Coffee Collection, but local wild genotypes were mostly missing from that collection. Shrubs grown in the backyards were genetically similar to the breeding material from INERA Yangambi.ConclusionsMost C. canephora that is grown in local backyards originated from INERA breeding programs, while a few shrubs were obtained directly from surrounding forests. The INERA Yangambi Coffee Collection could benefit from an enrichment with local wild genotypes, to increase the genetic resources available for breeding purposes, as well as to support ex situ conservation.

ECAT: Endemic and sub-endemic Central African Trees

This specimen-based occurrence dataset was compiled in the framework of the Conservation of Endem... more This specimen-based occurrence dataset was 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. Funding for the ECAT project was provided by the Franklinia Foundation. The project targets all tree species endemic or sub-endemic to the Central African region comprising the Democratic Republic of the Congo, Rwanda and Burundi. The dataset contains 6363 records with occurrences of 8904 specimens from 337 taxa belonging to 153 genera in 52 families. Many of these 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 georeferenced 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. Charac...

Flore d'Afrique centrale - Spermatophyta - Caricaceae

PDF version of treatment of Caricaceae in Flore d'Afrique centrale series

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Les plantes ligneuses du Rwanda — Flore, écologie et usages by U. Bloesch; G. Troupin; N. Derungs

Systematics and Geography of Plants, 2009

Flore d'Afrique centrale - Spermatophyta - Plumbaginaceae

PDF version of treatment of Plumbaginaceae in Flore d'Afrique centrale series

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Calycosiphonia or Kupeantha (Coffeeae, Rubiaceae)? A morphological and molecular study of a new species from the Albertine Rift

European Journal of Taxonomy, May 17, 2024

Field work in the Kibira National Park (Burundi), located in the Kivu-Ruwenzori system of the Afr... more Field work in the Kibira National Park (Burundi), located in the Kivu-Ruwenzori system of the Afromontane Region, revealed the existence of a new species clearly belonging to the Argocoffeopsis-Calycosiphonia clade (Coffeeae, Rubiaceae). The species shows striking heterophylly: the plagiotropous branches have several nodes bearing reduced or even scaly leaves. For the rest, it shares characters with Calycosiphonia and Kupeantha. Therefore, a morphological comparison with the clade is done, as well as molecular phylogenetic analyses. The morphology of the novelty is closer to Kupeantha than to Calycosiphonia, inter alia because the anthers have no transverse septa, in contrast to the multilocellate anthers of Calycosiphonia. However, the molecular data advocate for a position in Calycosiphonia -a result weakening the morphological distinction between Calycosiphonia and Kupeantha. The former genus is no longer restricted to species with transverse septa in the anthers and with placental outgrowths around the seed. The new species is formally described as Calycosiphonia albertina Ntore & Robbr. sp. nov. Nomenclaturally, this placement is also the most conservative option. A taxonomic treatment, illustrations, a geographical distribution map, and a preliminary conservation assessment are provided. The previous inclusion of Calycosiphonia pentamera in Kupeantha based on morphology is here corroborated by molecular analyses.

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Figure 7 from: Ntore S, Theeten F, Nkengurutse J, Ndayishimiye J, Sosef MSM (2022) The vascular plant diversity of Burundi. Plant Ecology and Evolution 155(3): 404-416. https://doi.org/10.5091/plecevo.85017

Figure 2 from: Ntore S, Theeten F, Nkengurutse J, Ndayishimiye J, Sosef MSM (2022) The vascular plant diversity of Burundi. Plant Ecology and Evolution 155(3): 404-416. https://doi.org/10.5091/plecevo.85017

$Research paper thumbnail of Deux nouvelles esp\ue8ces pal\ue9o-end\ue9miques de **Pauridiantha** (Rubiaceae) des Monts Udzungwa (sud de la Tanzanie)$

Deux nouvelles esp\ue8ces pal\ue9o-end\ue9miques de **Pauridiantha** (Rubiaceae) des Monts Udzungwa (sud de la Tanzanie)

Fig. 4 in Deux nouvelles espèces paléo-endémiques de Pauridiantha (Rubiaceae) des Monts Udzungwa (sud de la Tanzanie)

Fig. 4. — Cartes de distribution: A, Pauridiantha coalescens (Ŧ) et P. sylvicola (•); B, Pauridia... more

Fig. 3 in Deux nouvelles espèces paléo-endémiques de Pauridiantha (Rubiaceae) des Monts Udzungwa (sud de la Tanzanie)

Fig. 3. — Pauridiantha udzungwaensis: A, vue globale de la graine réticulée, sans paroi tangentie... more Fig. 3. — Pauridiantha udzungwaensis: A, vue globale de la graine réticulée, sans paroi tangentielle externe; B, vue d'une cellule du tégument séminal montrant la paroi tangentielle interne avec de minuscules perforations; C, coupe radiale d'une cellule de l'exotesta. A-C, Thomas 3831 (MO).

Fig. 1 in Deux nouvelles espèces paléo-endémiques de Pauridiantha (Rubiaceae) des Monts Udzungwa (sud de la Tanzanie)

Fig. 1. — Pauridiantha coalescens: A, rameau florifère; B, domaties en crypte; C, stipule; D, inf... more

The present state of the digitalization in Democratic Republic of Congo: Case of the Herbarium of Lwiro

Overall, the digitization of herbaria in the Democratic Republic of the Congo (DRC) has already r... more Overall, the digitization of herbaria in the Democratic Republic of the Congo (DRC) has already reached a very high level. Across all institutions there are currently more than 18,000 updated and scanned images that are posted on the website of Journal Storage (JSTOR). Nevertheless, there are still about 400,000 specimens to be scanned across the country. As one of the major herbaria of the DRC, the herbarium of Lwiro has taken advantage of this opportunity. Lwiro started this kind of work in 2011 with the support of the Botanical Garden of Meise, the Royal Museum for Central Africa and the Wildlife Conservation Society (WCS) in various projects such as types and Central African endemic species, species harvested in Kahuzi-Biega National Park, and finally the Albertine Rift endemics kept in herbarium of Lwiro (LWI). Approximately 3,000 samples were updated and digitized. The herbarium of Lwiro is situated in the east of the DRC and was created in 1953 with the goal to protect, to demonstrate value of, and to preserve the flora of the DRC. About 15,000 specimens of plants are preserved. Scanning work continues in the herbarium of Lwiro; currently about 700 samples of upper and lower plants remain to be scanned and over 2,500 specimens have been digitized and will probably be published on the website of the Royal Museum of Central Africa in the CABIN project in its second project. With this initiative, our institution gained experience in digitization of natural history collections, but we are still looking for more training and collaboration opportunities in order to improve this work. Ultimately, we would like to digitize and publish online the complete collection to improve accessibility and keep valuable scientific data in a safe format.

Revision of Pauridiantha paucinervis and its closest relatives (Rubiaceae, Pauridiantheae)

The vascular plant diversity of Burundi

Plant Ecology and Evolution

Background and aims – The vascular plant diversity of Burundi is still insufficiently explored, d... more Background and aims – The vascular plant diversity of Burundi is still insufficiently explored, described, and understood. The goal of this paper is to show the degree of botanical exploration and the spatial patterns of botanical diversity in Burundi to date. Material and methods – The study is based on a dataset containing virtually all plant collections, observed in herbaria, recorded in databases, or cited in literature, made in Burundi. All data were compiled, cleaned, and each record georeferenced. Various distribution analyses were carried out, some of which were based on a grid of 199 hexagonal cells. Key results – The dataset comprises 37,200 herbarium collections representing 3,860 species grouped in 1,290 genera and 216 families. The expected species richness is estimated at 4,869. The average number of collections per species is 8.8, but 1,149 species (27%) are sampled only once. The seven most species-rich families are Fabaceae (539 spp.), Poaceae (387), Asteraceae (29...

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Figure 5 from: Ntore S, Theeten F, Nkengurutse J, Ndayishimiye J, Sosef MSM (2022) The vascular plant diversity of Burundi. Plant Ecology and Evolution 155(3): 404-416. https://doi.org/10.5091/plecevo.85017

Figure 1 from: Ntore S, Theeten F, Nkengurutse J, Ndayishimiye J, Sosef MSM (2022) The vascular plant diversity of Burundi. Plant Ecology and Evolution 155(3): 404-416. https://doi.org/10.5091/plecevo.85017

The ECAT dataset: expert-validated distribution data of endemic and sub-endemic trees of Central Africa (Dem. Rep. Congo, Rwanda, Burundi)

PhytoKeys

In this data paper, we present a specimen-based occurrence dataset compiled in the framework of t... 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.