Syzygium pyneei Byng, V. Florens & Baider

Glabrous shrub to 3.5 m; bark grey to sometimes creamy-pink; branchlets terete, grey to reddish-brown. Leaves drying pale green above, light brown below; coriaceous, 10‒15 × 4.5‒9 cm, elliptic, oval-elliptic or oblong-elliptic, base round, cuneate or sub-cordate to cordate, apex acute to shortly acuminate, margin flat; 10‒18 secondary vein pairs, 3–16 mm apart, prominent on both sides, tertiary veins few, faint; inner intramarginal vein 2–4 mm from leaf margin, outer intramarginal faint, 1–2 mm from leaf margin; petiole 4‒8 mm long, robust, green when young, reddish-brown when old, 2–3 mm diameter. Inflorescences cauliflorous, ca. 6 cm long, axes terete, flowers up to 6, in clusters of 1–3; bracts and bracteoles deltoid, ca. 2 mm long, caducous. Flowers ca. 2 cm long; pseudostalk ca. 2 mm long; hypanthium 12–13 × 7–11 mm, pyriform, light green to cream; sepals 4–5 × 2–3 mm, obtusely triangular or obtuse; petals 8–9 × ca. 6 mm, orbicular; stamens 12‒15 mm long, light pink; anthers ca. 1 mm; ovules few per locule; style 7‒18 mm long. Fruits pyriform, 20 mm long × larger diameter 15.8‒19.3 mm and smaller diameter (near calyx disc) 12.5‒14 mm; colour not recorded, surface with few hairs. Seeds 1‒2, globular when 1, half-moon shape when 2; 11.2‒11.6 mm × 10.7‒12.3 × 11‒11.5 mm when globular or same height but 10 × 6 mm diameter when half-moon shape, testa bullate; not seen fresh.

This species is only known from Mauritius, and has not been recorded outside Mondrain Reserve. Only two individuals have been recorded and no seedlings have been seen.