Taxonomy: Corner (1965) recorded F. scaberrima as a subspecies of F. obscura . In Berg (2005) subspecies Ficus obscura ssp pisifera and Ficus obscura subspecies scaberrima were raised to a separate species F. pisifera.
In Berg’s Flora of Thailand( 2011) F. pisifera was renamed F. scaberrima. This was the original name when this plant was first described. Following the priority rule of taxonomic nomenclature, Berg realized that he had made a mistake in 2005 and took the opportunity to rectify this mistake in Flora of Thailand (2011). See page 550 in Berg & Pattharahirantricin (2011) Flora of Thailand.