Goniothalamus tapis

[2] Friedrich Anton Wilhelm Miquel, the Dutch botanists who first formally described the species, named it after a local vernacular name, Kajoe-tapis, from Pariaman Sumatra where the specimen he examined was found.

Its papery to slightly leathery, oblong to elliptical leaves are 14.5–25.5 by 4.5–8 centimeters long, with short tapering tips and pointed to round bases.

Its solitary flowers are born on 6-10 by 1-1.9 millimeters pedicels in axillary to supra-axillary positions.

The outer petals are cream-colored to pale yellow with pink or red highlights.

The inner petals are slightly to densely hairy outside and have and inner surface that is hairless at the base and granular at the top.

[8] Bioactive molecules extracted from its bark and roots have been reported to inhibit platelet-activating factor receptor binding in tests with rabbit platelets.