Impatiens banen and Impatiens etugei (Balsaminaceae), new threatened species from lowland of the Cross-Sanaga Interval, Cameroon

Abstract

SummaryWe describe two range-restricted new species to science from the genus Impatiens (Balsaminaceae), both threatened, from lowland of the Cross-Sanaga Interval of western Cameroon. The first, Impatiens banen, appears to be restricted to an open seepage microhabitat on granitic inselbergs in the lowland-submontane forest zone of the Ebo Forest in Littoral Region and is provisionally assessed using the 2012 IUCN standard as Vulnerable. Sharing characters with Impatiens burtonii and I. mannii, it differs from both, and appears to be unique in Cameroon inter alia 1) in the bicolored united lateral petals, the upper petals being white, while the lower petals are an intense pink-purple, 2) the hairy, filamentous spur, purple with a white apex, is curved along its length, almost describing a circle. Inselberg-specific species are unusual in Impatiens.The second species, Impatiens etugei, of the I. macroptera aggregate, is restricted to rocks in the Mutel River of the Kom Wum Forest Reserve of North West Region and is assessed as Critically Endangered. Having similarities with I. mackeyana and I. letouzeyi, it differs from other species in the aggregate inter alia by having opposite leaves (vs always alternate), flower exterior white (vs pink or pink-purple), and in the dorsal petal having a pair of lateral projections (vs projections absent).

Antisalmonella Activity and Modes of Action of Extracts, Fractions and Cerevisterol from Impatiens burtonii against Multi-Drug Resistant Salmonella

“…"Impatiens burtonii is a plant belonging to the family of Basalminaceae, which is used in traditional medicine to treat abdominal pains, constipation, diarrhea, indigestion, nausea" [15] and cough [16]. "Moreover, this plant is used in the treatment of female infertility and bacterial infections, hepatitis, feed for goats and pigs" [17].…”

“…burtonii" [15]. Previous biological studies have reported the antimicrobial [18], neuroprotective [16], antioxidant and antiepileptic [19] activities of Impatiens burtonii.…”

Keetia nodulosa sp. nov. (Rubiaceae - Vanguerieae) of West-Central Africa: bacterial leaf nodulation discovered in a fourth genus and tribe of Rubiaceae

“…Within Africa, Cameroon remains a major source of discovery for new species to science of vascular plants, with more species new to science published per annum than any other country in tropical Africa (Cheek et al 2020a). Recent novelties range from forest trees (Quintanar et al 2023;Cheek et al 2022a;, shrubs and small trees (Couvreur et al 2022;Gosline et al 2022;Stone et al 2023;Cheek et al 2023b), lianas (Jongkind and Lachenaud 2022), rheophytes (Cheek et al 2022b), terrestrial herbs , to epilithic herbs (Janssens et al 2022;Cheek et al 2023c) and ferns (Shang and Zhang 2023;Dubuisson et al 2022).…”

Keetia nodulosasp. nov. (Rubiaceae - Vanguerieae) of West - Central Africa: bacterial leaf nodulation discovered in a fourth genus and tribe of Rubiaceae

“…Within Africa, Cameroon remains a major source of discovery for new species to science of vascular plants, with more species new to science published per annum than any other country in tropical Africa (Cheek et al 2020a). Recent novelties range from forest trees (Quintanar et al 2023;Cheek et al 2022a;, shrubs and small trees (Couvreur et al 2022;Gosline et al 2022;Stone et al 2023;Cheek et al 2023b), lianas (Jongkind & Lachenaud 2022), rheophytes (Cheek et al 2022b), terrestrial herbs , to epilithic herbs (Janssens et al 2022;Cheek et al 2023c) and ferns (Shang & Zhang 2023;Dubuisson et al 2022).…”

“…2021), to epilithic herbs (Janssens et al . 2022; Cheek et al . 2023c) and ferns (Shang & Zhang 2023; Dubuisson et al .…”