Rhizophora apiculata Rhizophoraceae
Comments: Mangrove swamp, Mentiri, Brunei Darussalam. 2 June 2015 4° 59' 7.2" North, 115° 1' 49.7" East (4.985345, 115.030467) I am beneath a very long prop root that originated high on the mangrove.
Added: 6/21/15
WARNING: Accurate determination of this plant or fungus depends on more than this single image.