Canthium vanwykii Tilney & Kok

Evergreen or semi-deciduous much-branched shrub or medium-sized tree up to 6 m tall, unarmed or armed with short axillary spinescent branchlets; bark dark grey and smooth when young, becoming light grey and rough with age. Branchlets green, puberulent when young, becoming greyish-brown and essentially glabrous with age. Leaves opposite, decussate, petiolate; lamina usually widely ovate to widely elliptic, occasionally subrotund to rotund, (12-)22-30(-65) mm long, (8-)13-20(-60) mm wide, base rounded to bluntly attenuate, very rarely subcordate, apex usually obtuse, occasionally ± rotund or acute, margin entire, glabrous above, lower surface puberulent over midrib (becoming increasingly sparse away from petiole), usually sparsely puberulent over larger secondary veins, remainder of lamina nearly always glabrous, dark green and shiny above, often becoming conspicuously yellowish-green towards autumn and winter, paler green and dull below, upper surface often drying to a brownish colour in herbarium specimens; midrib slightly raised above, prominently raised below, principal lateral veins opposite or occasionally alternate, 3-4(-6) pairs, widely spaced, forking and looping usually c. 1.5 mm from the margin; domatia usually present in the axils of some of the principal lateral veins, occurring as hair tufts in depressions (visible as prominences on the upper surface), absent from some leaves; petiole 2-5(-8) mm long, puberulent; stipules large, deltoid, broadly based and tapering to a fine point, up to c. 4 mm long, brown, puberulent on outer surface, and sericeous at base on inner surface, marcescent to caducous. Inflorescences up to 50-flowered (usually 8-15-flowered) cymes, axillary, subfasciculate; peduncle up to 12 mm long, puberulent; pedicels 2-4(-7) mm long, puberulent; bracts inconspicuous. Flowers bisexual, actinomorphic, epigynous, pentamerous with a few flowers occasionally tetramerous or very rarely hexamerous. Calyx green, shortly toothed, teeth c. 0.5 mm long, deltoid, puberulent. Corolla yellow to greenish-yellow, tube (1-)1.5(-1.8) mm long, infundibular, notably widening towards the mouth of the tube (base of lobes), mouth of tube with a fringe of whitish hairs, lobes glabrous, initially spreading, becoming reflexed with age, (2.0-)2.3-(2.8) mm long, (1-)1.2(-1.4) mm wide at base, deltoid, apex thickened. Stamens alternipetalous, inserted just below the rim of the corolla tube, shortly exserted; filaments c. 0.5 mm long; anthers c. 0.7 mm long, apex acute, base sagittate, introrse, subbasifixed. Disc annular, entire, slightly raised and shiny. Ovary globose-obconical from the outside, 3-locular, with one ovule in each locule; style c. 2.5 mm long, terete, shortly (c. 1.3 mm including stigma) exserted; stigma 3-lobed. Fruit drupaceous, more or less ovoid, up to 10 mm long, 1 or 2(-3)-lobed, ripening to dark brown or blackish, 1 or 2(-3)-seeded.