@article {103, title = {A checklist of rheophytes of Cameroon}, journal = {PhytoKeys}, volume = {121}, year = {2019}, month = {09 May 2019}, pages = {81-131}, chapter = {81}, abstract = {

Rivers in Cameroon were surveyed to collect and document rheophytic plants. Rheophytes are the dominant aquatic macrophytes in tropical river systems, where they are adapted to extreme environments of rushing water (e.g., river rapids, waterfalls and flash floods). Rheophytic plants are useful indicators of river health. However, their habitats are threatened by human activities such as agriculture, plantation development, alluvial mining and dam construction, particularly in tropical countries. In this survey we documented 66 rheophytic species in 29 genera and 16 families. Two ferns, 8 monocotyledons and 56 dicotyledons were listed. Apart from the Podostemaceae family in which all species are rheophytic, the other 15 families have few species which are rheophytic. Five of these families have up to four species and the remaining 10 have only one member as a rheophytic species. The conservation status of each species is assessed and discussed. This work urges botanists, conservationists, and policy makers to do more to protect the habitats of rheophytes and put in place strategies and action plans for the conservation of this important biological group

}, keywords = {Cameroon, conservation, distribution, inventory, Rheophyte diversity}, doi = {. https://doi.org/10.3897/phytokeys.121.29924}, author = {F. Kuetegue and B. Sonk{\'e} and G.K. Ameka} } @article {90, title = {Craterispermum capitatum and C. gabonicum (Rubiaceae): two new species from the Lower Guinean and Congolian Domains.}, journal = {PhytoKeys}, volume = {83}, year = {2017}, pages = {103-118}, chapter = {103}, abstract = {

Craterispermum capitatum and C. gabonicum, two new species of Rubiaceae, are described from the Lower
Guinea and Congolian Domains. Detailed descriptions and distribution maps are provided for each species,
their conservation status is assessed and their taxonomic affinities are discussed. Craterispermum
gabonicum is unique within the genus because of the strong dimorphism in brevistylous and longistylous
flowers and inflorescences. We hypothesize that this species shows some form of dioecy. The distribution
of C. capitatum shows a wide disjunction: the species is present in the Lower Guinean and Congolian
Domains but absent from Gabon and South Cameroon. An identification key for the Craterispermum
species present in the Lower Guinean and Congolian Domains is given.

}, doi = {doi.org/10.3897/ phytokeys.83.13623}, author = {H. Taedoumg and B. Sonk{\'e} and P. Hamon and P. De Block} }