The type collection of Ficus detonsa from the Leiden Herbarium NATURALIS collected on Kinabalu by the Clemmens on 01 July 1933 at Kampung Dallas on the western slopes of Kinabalu outside the Kinabalu Park.
DETONSA Ficus detonsa Corner (1960) SECTION: KALOSYCE
Plant: A rare endemic Kinabalu root climber..
Leaf: Oblong 4-11 cm long x 2-6 cm wide. The leaf is thick and leathery with revolute (down-turned) margins.
Fig: The small figs (0.8-1.2 cm) grow individually in the leaf axils or just below the leaves on a short peduncle up to 0.3 cm long. Figs ripen green to white to pink to purple.
Distinguish: A small climbing fig with relatively large revolute leaves with a preference for mossy montane forest on Kinabalu. The figs of Ficus cavernicola are much larger and the leaves smaller.
Distribution: All records are from the higher slopes of Kinabalu between 1,200 m to 2,900 m where it appears to be rare. According to Beaman (2004) F. detonsa has a preference for areas of ultramafic soil. It has been collected at Layang Layang at c.2,100 m on the Kinabalu Summit Trail, and at Mesilau Cave (1,800m).