Botanical exploration in 2021 in the province of Zamboanga del Norte, Philippines, resulted in the collection of Argostemma arachnosum Merr., an endemic species first described in 1922. This species was not reported and documented to exist elsewhere after its discovery. Here, we present an amended description of A. arachnosum. Colored photographs, distribution map, notes on its ecology and preliminary conservation status are also provided.

Kean Roe F. Mazo and Christopher V. Famor. 2022. Rediscovery and Amended Description of a Philippine endemic Argostemma arachnosum (Rubiaceae). Nordic Journal of Botany. DOI: 10.1111/njb.03688