Widely distributed from Ceylon through entire continental tropical SE. Asia to Yunnan and Indo-China; in Malesia: Malaya (very rare, only in Penang, e.g. on Glugor Road, and Singapore), possibly also in Sumatra.
Unfortunately there is no certainty about the records in Indonesia: HASSKARL described his type from trees cultivated in the Botanic Gardens at Bogor; ZOLLINGER described S. hasskarlii also from a cultivated tree in these gardens (ZOLLINGER 3069) but noted that it would have originated from Bantam, West Java, adding the Sundanese vernacular 'ki langir'; a duplicate of this number in Paris is said by SANTISUK to have been annotated to come from the Lampong Distr. in S. Sumatra, which then probably is an error.
Then there is a collection said to have been collected by KORTHALS with 'Borneo' printed labels. This provenance is very unlikely, as the use of these old labels has been proved to be often erratic. These specimens may have come from West Central Sumatra but may also have been collected by KORTHALS in the Bogor Botanic Gardens. Plant-geographically the species might occur (or have occurred) in Sumatra and West Java, but probably as rare as in Malaya because of its preference for seasonal forest conditions.