Lewis, J. (1960) Gymnospermae Flora Zambesiaca 1(1) 78-80
Robyns, W. (1948) Cycadaceae Flore du Congo Belge et du Ruanda-Urundi Volume I 1-4
| Species | Botanical divisions | Content |
| ituriensis Bamps & Lisowski [NrEnd] | VI,VIII | |
| laurentianus De Wild. | IV,VIII | |
| marunguensis Devred [End] | XI | |
| poggei Asch. | IV,V,XI | |
| schaijesii Malaisse, Sclavo & Crosiers [NrEnd] | XI | |
| schmitzii Malaisse | XI | Description, Image |
| septentrionalis Schweinf. ex Eichler | VII |