Heglig: not very tall, but 6 to 8 feet in girth. Timber durable and not liable to attack by white ants; lowlands, clayey soil.
Koba: graceful, rounded crown, flat pods, abundant, good brown building timber, much used by Jurs; highland.
Digdig: large tree, straight bole, sweet yellow flowers, leafless during the cold season, strong yellowish timber; highland.
Ardeib: grows large, timber of very old trees is beautiful, mottled black and white, much valued in cabinet trade and also for its fruit; clayey soil.
Abu surug: large, fine dark red wood, capable of good polish, used chiefly by iron smelters for charcoal, bark rich in tannin; common in highlands.
Nwana: very large and abundant, white timber, not strong, but useful for planking, seed pulp sweet and edible, bark (“mudus”) good for tanning; ironstone.
Silag: common, tall, graceful, birchlike, white timber fairly durable, much used for building, leaves probably rich in tannin; highland tree.
Gughan: ebony family, sometimes very large, fine dark brown timber which turns black on exposure, much used for gun stocks; clay soil.
Abnus: Sudan ebony (not true ebony), crooked and thinnish; scattered on rocky soil in highlands.
Zeitun: teak family, large size, white wood, not strong; lowlands or clayey soil in highlands.