Plant and Fungal Species Descriptions

Denisea fonensis (Thismiaceae), a new genus and species of mycoheterotroph from Guinea.

The paper describes a new mycoheterotrophic genus and species, Denisea fonensis, discovered in Guinea, and highlights conservation concerns due to its critically endangered status.

Three new species of Thelymitra (Diurideae, Orchidaceae) endemic to Aotearoa New Zealand.

This paper describes three new Thelymitra orchid species endemic to New Zealand, supported by morphological, karyological, and DNA sequence data.

Ardisia mela (Primulaceae) a new threatened, herbaceous species of Ardisia subgen. Kamardisia from the forest of the Crystal Mts, Gabon.

The paper formally describes a new plant species, Ardisia mela, from Gabon and assesses it as Critically Endangered due to habitat threats.

A Taxonomic Revision of the Monocaul Phanerophyte Ardisia (Primulaceae) of Gabon

This paper revises the taxonomy of Monocaul Ardisia species in Gabon, identifying three new species and redescribing two existing ones, while assessing their conservation status.

Afrothismia lovettii sp. nov. (Afrothismiaceae) Critically Endangered (Possibly Extinct) and endemic to the Kihansi Falls Forest, Tanzania

This paper describes a new mycoheterotrophic plant species, Afrothismia lovettii, endemic to Tanzania's Kihansi Falls, which is critically endangered due to habitat destruction from a dam project.

Two new threatened Inversodicraea (Podostemaceae) species from Sierra Leone: I. joulei and I. lebbiei

Two new species of Inversodicraea from Sierra Leone are described, with conservation status assessments due to habitat threats.

Beauty at risk: A taxonomic synopsis of Belemia (Nyctaginaceae), an endangered and endemic genus of vines in Brazil

This study provides the first taxonomic synopsis of the endangered Brazilian vine genus Belemia, assessing conservation status and threats.

Afrothismiaceae West of the Dahomey gap: Afrothismia fonensis sp. nov. Critically Endangered and endemic to Pic de Fon forest, Simandou, Republic of Guinea

The paper describes a new critically endangered, non-photosynthetic Afrothismia species endemic to a specific forest in Guinea and discusses its conservation status and ecological significance.

Revisions to the Gliophorus irrigatus complex (Agaricales, Hygrophoraceae, Gliophorus, section Unguinosae) including a new waxcap, G. alboviscidus, from the UK but detected globally via soil eDNA, two new species from eastern North America, G. fumosus and G. parafumosus, plus a new species, G. calunus, and a new combination of Hygrophorus subaromaticus in Gliophorus from western North America.

The paper describes four new species in the Gliophorus irrigatus complex, highlights the role of citizen scientists in documenting fungal distributions, and discusses discrepancies between eDNA and basidiome distributions.

Sericanthe etugei and S. onanae (Coffeeae Rubiaceae) new cloud forest tree species Endangered in Southwest Cameroon & Bioko (Equatorial Guinea).

This paper describes two new cloud forest tree species from Cameroon and Equatorial Guinea, provisionally classified as Endangered due to their restricted distribution and habitat threats.

New Species of Anthurium (Araceae) from Huanuco Department, Peru

The paper describes and characterizes two new Anthurium species from Huanuco Department, Peru, comparing them with related species.

A revision of the African Russula radicans and allies in subgen. Heterophyllidiae provides an example of a clade that exhibits recent diversification and extensive phenotypic plasticity.

The paper revises the classification of Russula radicans and related species, identifying new species and highlighting phenotypic plasticity in R. radicans.

Keetia korupensis sp. nov. (Rubiaceae - Vanguerieae) a threatened lowland evergreen forest climber and the endemic plant species of Korup National Park, SW Region, Cameroon

The paper describes a new endemic plant species, Keetia korupensis, found in Korup National Park, Cameroon, and assesses its conservation status as Vulnerable.

Russula (Basidiomycota, Russulales, Russulaceae) subsect. Roseinae down under.

The paper describes and redescribes species of Russula subsect. Roseinae from the southern hemisphere, highlighting new species and secotioid taxa.