Senegalia megaladena. A – Leaf showing petiole gland (thick arrow) near centre of petiole and position of rachis glands (thin arrows). B – D –Leaflets (lower surface) showing size variation and rounded/obtuse apices (B = var. indochinensis; C & D = var. megaladena showing ascending, fine lateral veins). E – Stipule sparsely hairy abaxially. F – Pod with distinct stipe (s). G – Seed not especially large, showing thickly filiform, exarillate funicle (f). H – Rachis gland reasonably large. I – Node showing glabrous branchlet and petiole gland well-removed from leaf base. J – Petiole glands (dry) variation, showing characteristic thickening of gland and often upper surface concave. Vouchers: Sino-Soviet Joint Expedition 336 (A & C); Hainan Expedition 473 (B); D.D. Tao 562 (D); W.S. Liou 309 (E); Sino-German Expedition 1876 (F & H); Z.X. Li & F.W. Xing 1330 (G); Q. Lin 7742 (I); G.D. Tao 13471 (Ja); C.W. Wang 75618 (Jb); G.S. Sin 928 (Jc); C.W. Wang 74671 (Jd). Varieties: var. megaladena (A, C, D, E, I & J) and var. indochinensis (B, F, G & H). Drawn by Waiwai Hove.