Species of Acacia sampled in the semi-arid region II. (A–D) Transverse sections (TS); (E–H) tangential longitudinal sections (TLS). (A) Acacia carolae (Juliflorae) EKg16. Vessels in groups, very thick-walled fibres, axial parenchyma not abundant. (B and F) Acacia deanei subsp. deanei (Botrycephalae) LH49. Vessels mainly grouped, fibres very thick walled, axial parenchyma aliform and confluent, vessels with alternate pitting, axial parenchyma with chambered prismatic crystals, rays 2–4 cells wide. (C and G) Acacia dorothea (Juliflorae) EKg43. Fibres thin to thick walled, axial parenchyma mainly vasicentric, rays 1–4 cells wide. (D) Acacia harpophylla (Plurinerves) LH29. Abundant aliform and confluent axial parenchyma, gelatinous fibres. (E) Acacia homalophylla (Plurinerves) LH34. Rays 1–2 cells wide, prismatic crystals abundant in chambered axial parenchyma. (H) Acacia pendula (Plurinerves) LH36. Rays 2–4 cells wide, prismatic crystals abundant in chambered axial parenchyma. Scale bars = 100 μm.