ACROSS
1. Plateau of eastern South Africa at 1 200m to 1 800m elevation (8) 5. (An animal) marked with spots or streaks (8) 9. One who travels on horseback (5) 10. The Cape_beetle () is an endangered insect (4) 11. Precious metal, symbol Ag (6) 12. Degree of savagery (8) 14. Degree of leafy abundance (8) 17. Relating to a daily rhythm (9) 19. Ditch formed by soil erosion (5) 21. Channel formed by running water (5) 22. Aardvark (7) 23. Plants grown for harvesting (5) 25. Country of the Nile delta (5) 27. Grain of a cereal grass of the genus (5,4) 29. Benevolence (8) 32. Zulu traditional healer (8) 33. American wild cat with the appearance of a small leopard (6) 34. Plant with a red or white succulent root, a source of sugar (4) 35. Proportion (5) 36. Differ in opinion (8) 37. Prickly composite plants with (usually) purple flower heads (8)