| S/N | Species name | Locality/state | Name of collector/accession No./date of collection |
| 1 | C. bracteatum (Laws) Engl. and Diels. | Aponum F/R, Akure/Ondo | Odewo and others, FHI 90845, 7/6/1979 |
| Atim, Calabar, C/R State | H.D. Onyeachusim, FHI 48155, 13/2/1964 | ||
| Uboma/Orlu Rd, Imo State | Okeke and Macauly, FHI 72161, 25/01/1975 | ||
| Choba, Rivers State | Ekeke, C. | ||
| Ughelli, Delta State | Ekeke, C. | ||
| Umuahia/Ibeku, Abia | J.O. Ariwodo, FHI 81292, 22/01/1975 | ||
| Benin, Edo State | Ekeke, C. | ||
| Awkunanu, Enugu | J.A. Emwiogbon, FHI 72094, 15/11/1973 | ||
| 2 | C. collinum Fresen. subsp binderanum (Kotschy) Okafor | New Bussa | Gbile, FHI 91497, 1972 |
| Ilorin, Oyo | Oloranfemi and Oguntayo, FHI 88536, 1972 | ||
| Borgu G/R, Kwara | Child, D.S, FHI 30261, 1972 | ||
| Okene, Kogi | Cleyton, 1972 | ||
| Ilorin, Oyo | MacDonald, K.R., FHI 2081 | ||
| Bauchi, Bauchi | Lely, FHI 2095 | ||
| Abuja | Onyeachusim and others, FHI 2679 | ||
| 3 | C. collinum Fresen. subsp. hypopilinum (Diels) Okafor | Borgu G/R, Kwara | Child, D.S, FHI 30259, 1972 |
| N. Nigeria | J.B. Hall and Daramola, FHI 67472, 1971 | ||
| Enugu, Enugu State | Latilo, FHI 63476, 1971 | ||
| Abuja | Chizea, L.G., FHI 2446, 1975 | ||
| Ago-Are, Oyo state | Olorunfemi and others, FHI 96422, 1975 | ||
| New Bussa | Gbile and others, FHI 91497, 1975 | ||
| Mokwa, Ngier | FHI 9519 | ||
| Awum/Jebba FR, Kwara State | Onyeachusim and others, FHI 3459 | ||
| Abuja | Onyeachusim and others, FHI 2653 | ||
| 4 | C. confertum (Laws) Benth | Bendiga Ayuk, Ikom, C/R state | FHI 2817, 8/12/1950 |
| Akamkpa, C/R state | B.O. Daramola, FHI 56413, 19/10/1965 | ||
| Akamkpa, C/R state | Ekeke, C. | ||
| Okobodo, Itu, C/R state | J.O. Ariwodo, FHI 88819, 1/11/1978 | ||
| 5 | C. constrictum | Edge of Orugi Creek, Kabba, Kogi | A.P.D. Jones, 630, 10/2/1943 |
| Taylor Creek, Bayelsa | Ekeke, C. | ||
| Oguta Lake, Imo | Ekwuno and others, FHI 96294, 1/9/1981 | ||
| Bangedde River Koton-Kariti, Kogi | J. Peal, FHI 39736, 29/4/1957 | ||
| Taylor Creek, Rivers State | Ekeke, C. | ||
| Taylor Creek, Bayelsa/Rivers | FHI 16524, 10/5/1940 | ||
| Atani, Ogaru, Anambara | J. C. Okafor, FHI 94985, 20/3/1974 | ||
| Ogbaru, C/R State | FHI 94985 | ||
| Ibadan, Oyo | Ekwuno, P, FHI 96294 |