Kindia (Pavetteae, Rubiaceae), a new cliff-dwelling genus with chemically profiled colleter exudate from Mt Gangan, Republic of Guinea

A new genus Kindia (Pavetteae, Rubiaceae) is described with a single species, Kindia gangan, based on collections made in 2016 during botanical exploration of Mt Gangan, Kindia, Republic of Guinea in West Africa. The Mt Gangan area is known for its many endemic species including the only native non-neotropical Bromeliaceae Pitcairnia feliciana. Kindia is the fourth endemic vascular plant genus to be described from Guinea. Based on chloroplast sequence data, the genus is part of Clade II of tribe Pavetteae. In this clade, it is sister to Leptactina sensu lato (including Coleactina and Dictyandra). K. gangan is distinguished from Leptactina s.l. by the combination of the following characters: its epilithic habit; several-flowered axillary inflorescences; distinct calyx tube as long as the lobes; a infundibular-campanulate corolla tube with narrow proximal section widening abruptly to the broad distal section; presence of a dense hair band near base of the corolla tube; anthers and style deeply included, reaching about mid-height of the corolla tube; anthers lacking connective appendages and with sub-basal insertion; pollen type 1; pollen presenter (style head) winged and glabrous (smooth and usually hairy in Leptactina); orange colleters producing a vivid red exudate, which encircle the hypanthium, and occur inside the calyx and stipules. Kindia is a subshrub that appears restricted to bare, vertical rock faces of sandstone. Fruit dispersal and pollination by bats is postulated. Here, it is assessed as Endangered EN D1 using the 2012 IUCN standard. High resolution LC-MS/MS analysis revealed over 40 triterpenoid compounds in the colleter exudate, including those assigned to the cycloartane class. Triterpenoids are of interest for their diverse chemical structures, varied biological activities, and potential therapeutic value

Sex practices and awareness of Ebola virus disease among male survivors and their partners in Guinea.

INTRODUCTION: Towards the end of the 2013-2016 West African outbreak, sexually-transmitted Ebola virus re-emerged from Ebola virus disease (EVD) survivors in all three hardest hit countries. We explore sex practices and awareness of the risk of Ebola virus transmission among EVD survivors and their partners. METHODS: In this cross-sectional study, we recruited a convenience sample of study participants aged >15 years who were male EVD survivors, their sexual partners and a comparison group. We administered a questionnaire to all respondents, estimated self-reported sexual practices and risk awareness and conducted in-depth interviews. RESULTS: We recruited 234 EVD survivors, 256 sexual partners of survivors and 65 individuals in the comparison group from five prefectures in Guinea. The prevalence of safe sexual behaviour (regular condom use or sexual abstinence >12 months) and regular condom use in EVD survivors was 38% (95% CI 31% to 44%) and 21% (95% CI 16% to 27%), respectively. Among partners, these prevalences were lower (11%, 95% CI 7% to 15% and 9%, 95% CI 5% to 12%, respectively). EVD survivors were more than five times as likely to engage in safe sexual behaviour compared with the comparison group (aOR 5.59, 95% CI 2.36 to 13.2). One-hundred and thirty one EVD survivors (57%) and 94 partners (37%) were aware of the risk of Ebola virus re-emergence associated with having unsafe sex. Partners who reported not being informed by their husband/boyfriend (EVD survivor) were more likely to be unaware of this risk (aOR 20.5, 95% CI 8.92 to 47.4). CONCLUSIONS: We disclose here a need to improve knowledge of the disease and close the gap between knowledge and practice found in EVD survivors and their partners. Current and future survivors' follow-up programmes should include partners and be more effective at communicating sex-related risks. Community-level fears and attitudes that enable stigmatisation should be addressed. Safe sex interventions targeting EVD survivors and their partners should be prioritised

Nouvelles découvertes de plantes de la République de Guinée, Afrique de l’Ouest, dont <i>Gymnosiphon fonensis</i> Cheek, sp. nov. (Burmanniacées), une nouvelle espèce en danger critique d’extinction de Simandou

Les 50 nouvelles espèces de plantes publiées depuis 2009 en République de Guinée (Guinée-Conakry), Afrique de l’Ouest, sont passées en revue. Une autre nouvelle espèce, de Gymnosiphon Blume (Burmanniaceae), G. fonensis Cheek, sp. nov. est formellement décrite dans la Forêt Classée de Pic de Fon, Chaîne de Simandou, Guinée-Forestière, République de Guinée (Guinée-Conakry) en Afrique de l’Ouest. La nouvelle espèce était autrefois confondue avec G. bekensis Letouzey d’Afrique centrale et lui ressemble par ses larges lobes tépales externes plats, son tube du périanthe &gt; 10 mm de long et sa fleur (sub) sessile. Cela diffère par ex. en ce que la longueur du tube de la corolle, (13-)14-18 mm, dépasse le diamètre de la corolle (10-11 mm) (vs longueur du tube de la corolle [12 mm] &lt; diamètre de la corolle [12-15 mm]), les anthères insérées c. 4 mm de profondeur dans le tube de la corolle (vs insérées à l’embouchure de la corolle) et le rhizome est dépourvu de feuilles d’écailles (vs feuilles d’écailles présentes). Gymnosiphon fonensis Cheek, sp. nov. est la première espèce connue de son genre et de sa famille dans laquelle une présentation secondaire du pollen a été enregistrée. L’espèce est connue sur cinq sites, tous menacés, dans un seul emplacement basé sur les menaces, elle est donc évaluée comme étant en danger critique d’extinction (CR B1ab(iii)+D) selon la norme UICN 2012, ce qui en fait l’espèce de Gymnosiphon la plus menacée. évaluée en Afrique continentale. Nous fournissons des notes sur l’importance pour la conservation des plantes de la localité type, la forêt de Boyboyba, Simandou, qui possède la plus grande diversité d’espèces de Gymnosiphon et d’espèces mycotrophes achlorophylliennes, en Afrique de l’Ouest. La nouvelle espèce est illustrée par des photos en couleur et des dessins au trait et est cartographiée. Une clé d’identification est fournie pour les dix espèces du genre désormais connues d’Afrique et de Madagascar.The 50 new species to science of plant published since 2009 from the Republic of Guinea (Guinée-Conakry), W. Africa, are reviewed. A further new species, of Gymnosiphon Blume (Burmanniaceae), G. fonensis Cheek, sp. nov. is formally described from the Forêt Classée de Pic de Fon, Simandou Range, Guinée-Forestière. The new species was formerly confused with and resembles G. bekensis Letouzey of central Africa in the broad flat outer tepal lobes, perianth tube &gt;10 mm long, and (sub)sessile flower. It differs e.g. in that the length of the corolla tube, (13-)14-18 mm, exceeds the corolla diameter (10-11 mm) (vs length of the corolla tube (12 mm) &lt; the corolla diameter (12-15 mm)), the anthers inserted c. 4 mm deep in the corolla tube (vs inserted at the corolla mouth) and the rhizome lacks scale-leaves (vs scale leaves present). Gymnosiphon fonensis Cheek, sp. nov. is the first known species of its genus and family in which secondary pollen presentation (on the style head) has been recorded. The species is known from five sites, all with threats, in a single threat-based location, accordingly it is assessed as Critically Endangered (CR B1ab(iii)) using the IUCN 2012 standard, making it the most threatened species of Gymnosiphon assessed in continental Africa. We provide notes on the importance for plant conservation of the type locality, the Boyboyba forest, Simandou, which has the highest diversity of Gymnosiphon species, and of achlorophyllous mycotrophic species, in W. Africa. The new species is illustrated by colour photos and line-drawings and is mapped. An identification key is provided to the ten species of the genus now known from Africa and Madagascar.</p

Gladiolus mariae (Iridaceae), a new species from fire-free shrubland in the Kounounkan Massif, Guinea

Gladiolus mariae Burgt (Iridaceae), a new species from Guinea, West Africa, is described and illustrated. The new species is placed in Gladiolus sect. Decorati Goldblatt and compared with the nine species already known from that section. Flowering plants stand 28–160 cm high with 1–6 bright orange flowers, opening one at a time. The ecology of the new species is discussed in detail, and a description of the vegetation in the region is provided. Gladiolus mariae is at present known only from two uninhabited sandstone table mountains in the Kounounkan Massif, Forécariah Prefecture. About 210 plants were found, on rocky soils at altitudes of 650–1100 m. The majority of plants, about 160, were found in fire-free shrubland, in five patches of 1–4 ha each, dominated by fire-sensitive plant species, but grasses are infrequent. Gladiolus mariae seems vulnerable to grassland fires. The area of occupancy is 28 km2. The species is assessed to the IUCN category Endangered.Citation: Burgt X. M. van der, Konomou G., Haba P. M. & Magassouba S. 2019: Gladiolus mariae (Iridaceae), a new species from fire-free shrubland in the Kounounkan Massif, Guinea. – Willdenowia 49: 117–126. doi: https://doi.org/10.3372/wi.49.49112Version of record first published online on 17 April 2019 ahead of inclusion in April 2019 issue

Talbotiella cheekii (Leguminosae: Detarioideae), a new tree species from Guinea

Talbotiella cheekii Burgt, a new tree species from Guinea, is described and illustrated. It is a tree to 24 m high, with a stem diameter to 83 cm, and occurs in forest dominated by tree species of the Leguminosae subfamily Detarioideae, on rocky stream banks and rocky hill slopes, at an altitude of 100 – 600 m. It is estimated that 1600 – 2400 mature trees have been seen, in about twelve forest patches; more trees may be present in places not yet visited. One of the localities of the new species is situated at only 46 km northeast of the centre of the capital Conakry and 6 km northeast of the town centre of Coyah, part of the Conakry urban agglomeration. Its distribution is 1400 km further west from the previous westernmost distribution of the genus. The current extent of occurrence is 166 km2. Talbotiella cheekii is here assessed as Endangered (EN) following IUCN Red List categories

Threatened Habitats & Tropical Important Plant Areas (TIPAs) of Guinea, West Africa

Guinea has more than 250 documented unique and threatened plant species, more than is known for any other country in West Africa. To protect them should be not only a national priority but a global one. Among these species – these natural resources – are the potential for new medicines, materials, and foods that could improve the livelihoods of Guineans through research and development. However, time is running out. Already 35 of Guinea’s rarest plant species are possibly extinct, and 25 of these species are, or were, globally unique to Guinea. These species have not been found in more than 50 years, despite our surveys to seek them, and appear to have been destroyed unknowingly as a result of human activities. Guinea will continue to develop, with increased mining, improved agriculture, new roads, new industry, larger towns and cities, and more infrastructure to support them. This future development will impact on the natural environment. In this book, we document Guinea’s most threatened habitats for plants, the 22 most important areas for the conservation of these habitats, and the threatened plant species that they contain. If the 22 Tropical Important Plant Areas (TIPAs) that are mapped in this book can be protected, much of Guinea’s national patrimony in terms of wild plant resources will be safeguarded. Altogether, these 22 areas occupy 8,702km², 3.5% of the surface area of Guinea. Several of these areas are already protected, such as Nimba and Ziama. Others are not protected, such as Kounounkan, which has more globally unique species than any other location in Guinea, yet where forest destruction continues. The 22 TIPAs that are mapped in this book include: –– Over 60% of Guinea’s threatened plant species –– Guinea’s most species-rich documented sites –– Important indigenous socio-economic species –– The highest quality areas of each of the nine threatened habitats. We hope that this book, a joint product of Guinean and UK-based scientists, government officials, and NGO staff, will result in increased protection and better management of Guinea’s plant diversity

Habitats Menacés et Zones Tropicales Importantes Pour les Plantes (ZTIP) de Guinée, Afrique de l'Ouest

La Guinée compte plus de 250 espèces répertoriées de plantes uniques et menacées, plus que tout autre pays d'Afrique de l'Ouest. Assurer leur protection ne devrait pas uniquement être une priorité nationale, mais une priorité mondiale. Parmi ces espèces – ces ressources naturelles – il existe potentiellement de nouveaux médicaments, matériaux, et aliments qui, grâce à la recherche scientifique, pourraient améliorer les moyens de subsistance des Guinéens. Cependant, le temps presse. Déjà 35 des espèces de plantes les plus rares de Guinée sont peut-être éteintes, et 25 de ces espèces sont ou étaient uniques au monde en Guinée. Malgré nos recherches, ces espèces n'ont pas été aperçues depuis plus de 50 ans et semblent avoir été détruites par inadvertance à la suite d'activités humaines. La Guinée continuera de se développer à travers une exploitation minière plus importante, une agriculture améliorée, de nouvelles routes, de nouvelles industries, de plus grandes villes, ainsi que des infrastructures supplémentaires pour les soutenir. Ce développement futur aura un impact sur l'environnement naturel. Dans ce livre, nous documentons les habitats de plantes les plus menacés de Guinée et les 22 zones les plus importantes, non seulement pour la conservation de ces habitats, mais également pour les espèces de plantes menacées qu’ils contiennent. Si ces 22 ZTIP répertoriées dans cet ouvrage peuvent être protégées, une grande partie du patrimoine national de la Guinée en termes de ressources en plantes sauvages sera alors sauvegardée. Au total, ces 22 zones occupent 8 702 km², soit 3,5% de la superficie de la Guinée. Plusieurs de ces zones sont déjà protégées, telles que Nimba et Ziama. D'autres ne sont pas protégées, comme par exemple Kounounkan qui abrite pourtant plus d’espèces uniques au monde que tout autre lieu de Guinée, et la destruction de la forêt s’y poursuit. Les 22 Zones Tropicales Importantes pour les Plantes répertoriées dans ce livre incluent : –– Plus de 60% des espèces de plantes menacées de Guinée –– Les sites documentés les plus riches en espèces de Guinée –– Des espèces socio-économiques indigènes importantes –– Les zones de la plus haute qualité de chacun des neuf habitats menacés Nous espérons que ce livre, qui est le résultat des efforts communs de scientifiques guinéens et britanniques, de responsables gouvernementaux, et d’équipes d’ONG, permettra de renforcer la protection de la diversité végétale de la Guinée et de mieux la gérer