Craterispermum capitatum and C. gabonicum (Rubiaceae): two new species from the Lower Guinean and Congolian Domains

Taedoumg, Hermann; Sonké, Bonaventure; Hamon, Perla; Block, Petra De

doi:10.3897/phytokeys.83.13623

Cited by 4 publications

(4 citation statements)

References 17 publications

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“…Among the new species published since 2010 are four species of Aframomum (Zingiberaceae, Harris and Wortley 2018), Baphia vili Cheek (Leguminosae, Cheek et al 2014), Campylospermum glaucifolium Biss. (Ochnaceae, Bissiengou 2013), Carpolobia gabonica Breteler (Polygalaceae, Breteler 2010), Chassalia lutescens O.Lachenaud and D.J.Harris (Rubiaceae, Lachenaud and Harris 2010), Craterispermum capitatum Taedoumg and De Block (Rubiaceae, Taedoumg et al 2017), two species of Gilbertiodendron (Leguminosae, van der Burgt et al 2015), Kalaharia schaijesii Bamps (Labiatae, Bamps 2013), Morinda mefou Cheek (Rubiaceae, Cheek et al 2011), Octoknema chailluensis Malécot and Gosline (Olacaceae, Gosline and Malécot 2012), Salacia arenicola Gosline (Celastraceae, Gosline et al 2014), and Vepris teva Cheek (Rutaceae, Langat et al 2021)…”

Section: Resultsmentioning

confidence: 99%

A new, Critically Endangered species of Impatiens (Balsaminaceae) from the coastal plain of the Republic of Congo

Cheek

2022

Preprint

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Impatiens moutsambotei is described from a herbarium specimen collected at a waterfall in forest on the coastal plain, below the Mayombe Mts of the Republic of Congo. Sharing many distinctive characters with Impatiens floretii of the Doudou Mts of Gabon, it is abundantly distinguished inter alia by the leaf-blades which are lanceolate or narrowly elliptic, not ovate, their bases acute, not obtuse or broadly rounded to truncate; the reduced, peduncular bracts bearing long, filiform setae, and not entire; the proximal (upper) of the lateral united petals are entire, not bifid; the spur is curved at the base and overlaps the lower sepal, not curved through its length to describe a semi-circle and held below the lower sepal. Both species are placed in the Impatiens macroptera species aggregate. Impatiens moutsambotei is known from a single site, where it was collected nearly 30 years ago and not seen since. The new species is assessed as Critically Endangered due to threats of habitat clearance from mining and road widening, and may be already be extinct.

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Section: Resultsmentioning

confidence: 99%

A new, Critically Endangered species of Impatiens (Balsaminaceae) from the coastal plain of the Republic of Congo

Cheek

2022

Preprint

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“…1897, Homalium henriquesii Gilg ex Engl. 1921 Tabernaemontana stenosiphon Stapf 1895, and Craterispermum cerinanthum Hiern 1877 (formerly C. montanum Hiern 1877 but considered as synonym by Taedoumg (2020)). However, certain montane forest species, such as Symphonia globulifera L. f. 1782, can also be found on ridges at lower elevations, indicating that the transition between submontane and montane forest depends on the local topography, a topic that surely deserves attention in future studies.…”

Section: Montane Forestsmentioning

confidence: 99%

Classification, Distribution, and Biodiversity of Terrestrial Ecosystems in the Gulf of Guinea Oceanic Islands

Dauby

Stévart

Barberá

et al. 2022

Biodiversity of the Gulf of Guinea Oceanic Islands

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The oceanic islands of the Gulf of Guinea display a large diversity of environmental conditions and biological communities, whose interactions have contributed to the development of a great variety of ecosystems, from mangroves to montane grasslands. Human activities have extensively and profoundly altered many of these natural ecosystems over the past five centuries. We review key studies to propose an updated classification map of terrestrial ecosystems, taking advantage of up-to-date spatial information on abiotic gradients and biological distributions. To guide future research and conservation programs, we highlight challenges and pending questions regarding our understanding of the structure, integrity, and dynamics of terrestrial ecosystems in these islands.

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“…These bio-active compounds are frequently characterised, extracted and used as raw materials in the production of many drugs [12,13]. Widely distributed in tropical Africa, Madagascar, and the Seychelles [15,16]. Craterispermum schweinfurthi species are shrubs or small trees with axillary or supra-axillary inflorescences, paired at the nodes and often condensed.…”

Section: Introductionmentioning

confidence: 99%

Effects of the Hydromethanol Leaf Extract of Craterispermum schweinfurthi on Sperm Characteristics and Haematological Indices in Male Wistar Rats

2024

Cross Current Int J Med Biosci

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Sexual and haematological abnormalities are on the increase, hence the need to identify possible ameliorative agents. The present study evaluates the effects of the hydromethanol leaf extract of Craterispermum schweinfurthi on sperm characteristics and haematological indices in male wistar rats. A total of 20 male wistar rats weighing between 100-250g were randomly divided into 4 groups of 5 rats each and treated as follows for 28days: Group A: Negative control: Group B, C and D received 250mg/kgbw, 500mg/kg bw and 750mg/kg bw of extract. On day 29, the rats were placed under chloroform anaesthesia and blood samples collected for the estimation of serum total white blood cell, red blood cell and platelet counts. Also, rats caudal epididymides were isolated for sperm characteristics estimation. Compared to Group A rats, significantly higher values of sperm count, active sperm, and population of normal sperm were observed amongst Groups B-D rats in a dose dependent manner (p<0.05). For sperm volume and viability, significant increases were observed amongst Group D rats only compared to Group A rats (p<0.05): Suggesting a possible greater potency of the extract at 750mg/kg body weight. Population of abnormal sperm, sluggish sperm and dead sperm were significantly decreased amongst Groups B-D rats compared to Group A rats (p<0.05). Similarly, a significant and dose dependent increase in total WBC, RBC and PLT counts following graded extract doses administration were observed amongst rats in B, C and D Groups compared to Group A rats: Demonstrating a possible blood boosting potentials of the extract in male wistar rats. The extract apparently exhibits potential beneficial effects on sperm characteristics and haematopoiesis in male wistar rats.

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Craterispermum capitatum and C. gabonicum (Rubiaceae): two new species from the Lower Guinean and Congolian Domains

Cited by 4 publications

References 17 publications

A new, Critically Endangered species of Impatiens (Balsaminaceae) from the coastal plain of the Republic of Congo

A new, Critically Endangered species of Impatiens (Balsaminaceae) from the coastal plain of the Republic of Congo

Classification, Distribution, and Biodiversity of Terrestrial Ecosystems in the Gulf of Guinea Oceanic Islands

Effects of the Hydromethanol Leaf Extract of Craterispermum schweinfurthi on Sperm Characteristics and Haematological Indices in Male Wistar Rats

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