72 
Card. Bull. Singapore 69(1) 2017 
Etymology. The epithet brunsing is composed by merging two herbaria acronyms 
together, namely BRUN (the Brunei National Herbarium) and SING (Herbarium of 
the Singapore Botanic Gardens). This new species is named for the two herbaria to 
celebrate the close working relationship between the two herbaria that can be traced 
back to the early 80’s. The on-going MoU programme “The Botanical Survey of Brunei 
Darussalam ’ continues this cooperation. 
Proposed IUCN Conservation Assessment. Macrosolen brunsing Y.W.Tow & Ariffin 
is so far known only from two locations in the almost complete Nyamokning Dam, 
Tadan Hills Forest Reserve. The IUCN status proposed here for Macrosolen brunsing 
is Data Deficient (DD) as the species is only know from two collections, both within 
the same locality. Generally, the Tadan Hills Forest Reserve is considered to be 
poorly explored botanically. In this area at least Macrosolen brunsing is not under any 
imminent threats due to human activity as the species is protected in a forest reserve. 
The Brunei Government officially announced that logging will be phased out in all 
forest reserves in 2014 (Hamit, 2014). 
