PROTA 7(1): ‘Timbers 1’ is the first of 2 volumes describing the wild and cultivated plant species of tropical Africa used for their timber. Some of these are traded on the international timber market, but many are only used locally, for construction purposes or the production of furniture, implements and utensils. Bamboos of which the stems are used for construction are also included in this commodity group. Most species have several other, secondary, uses. PROTA assigns one primary use and, if relevant, one or more secondary uses to all plant species used in Africa. For instance, the primary use of ''Chrysophyllum lacourtianum'' De Wild. is as a timber tree, and thus it is treated in PROTA 7, but it has several secondary uses, e.g. the fruits are eaten and the bark is used in traditional medicine. The timber of ''Chrysophyllum albidum'' G.Don is also commonly used, but the primary use of this species is as a fruit, and consequently it is described in PROTA 6: ‘Fruits’.
'''Table 1. Families treated in PROTA 7(1) and the division of species.'''
{| class="wikitable centre"
|-
|''Cupressaceae''
|align="right"| 3||align="right"| 3||align="right"| 1||align="right"| 4 || align="right"| 8
|-
|''Lauraceae''
|align="right"| 3||align="right"| 3 ||align="right"| 9||align="right"| 18|| align="right"| 30
|-
|''Malvaceae''
|align="right"| 2||align="right"| 2||align="right"| 0||align="right"| 3|| align="right"| 5
|-
|''Meliaceae''
|align="right"| 15||align="right"| 17||align="right"| 9||align="right"| 18 || align="right"| 44
|-
|''Mimosaceae''|align="right"| 16||align="right"| 11 ||align="right"| 28 ||align="right"| 40|| align="right"| 79
|-
|''Moraceae''|align="right"| 6||align="right"| 7||align="right"| 2||align="right"| 0|| align="right"| 9
|-
|''''