Tree up to ± 10 m. tall, trunk up to ± 4 dm. diam., bark very dark, branches stouter than in P. tenuifolium. Lvs alt. on short stout petioles. Lamina elliptic-to lanceolate-to obovate-oblong, us. acute, ± 4-10 × 2-5 cm., coriac., dark green above, paler below; margins flat. Fls axillary, solitary or occ. in few-fld cymes, on short stout ± pubescent peduncles. Bracts somewhat persistent. Sepals broad-oblong, ± pubescent; petals dark to very dark red. Capsules ± globose, c. 12 mm. diam.; valves woody, thick, rugulose.