1. More than 80 % of the species belong to the Rubiaceae family. 2. All coffee plants are classified in the large family Rubiaceae . 3. Gynoecium consists of inferior ovary, also characteristic of Rubiaceae . 4. The Rubiaceae consist of terrestrial and predominantly woody plants. 5. Larvae have been recorded from Loganiaceae and Rubiaceae species. 6. All six plants known to cause gousiekte are members of the Rubiaceae family. 7. Heterodistyly is another mechanism to avoid inbreeding and is widely present in the Rubiaceae family. 8. Unisexual flowers also occur in Rubiaceae and most taxa that have this characteristic are dioecious. 9. Petioles of opposite leaves fuse at base to form interpetiolar stipules, characteristic of Rubiaceae . 10. The larvae feed on " Faramea occidentalis " and probably other Rubiaceae species.
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