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Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Cladus: Rosids
Cladus: Eurosids I
Ordo: Fabales

Familia: Fabaceae
Subfamilia: Faboideae
Tribus: Phaseoleae
Subtribus: Phaseolinae
Genus: Physostigma
Species: P. coriaceum – P. cylindrospermum – P. laxius – P. mesoponticum – P. venenosum

Physostigma Balf. (1861)
Native distribution areas:

Continental: Africa
Regional: Tropical Africa
Angola, Cameroon, Central African Repu, Congo, Equatorial Guinea, Gabon, Ghana, Gulf of Guinea Is., Ivory Coast, Liberia, Malawi, Mali, Mozambique, Nigeria, Sierra Leone, Tanzania, Zambia, Zaïre

References: Brummitt, R.K. 2001. TDWG – World Geographical Scheme for Recording Plant Distributions, 2nd Edition
Primary references

Balfour, J.H., 1861. Trans. Roy. Soc. Edinburgh 22: 310


Govaerts, R. et al. 2021. Physostigma in Kew Science Plants of the World online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the internet. Accessed: 2021 May 23. Reference page.
International Plant Names Index. 2021. Physostigma. Published online. Accessed: May 23 2021. 2021. Physostigma. Missouri Botanical Garden. Published on the internet. Accessed: 2021 May 23.
Hassler, M. 2021. Physostigma. World Plants: Synonymic Checklists of the Vascular Plants of the World In: Roskovh, Y., Abucay, L., Orrell, T., Nicolson, D., Bailly, N., Kirk, P., Bourgoin, T., DeWalt, R.E., Decock, W., De Wever, A., Nieukerken, E. van, Zarucchi, J. & Penev, L., eds. 2021. Species 2000 & ITIS Catalogue of Life. Published on the internet. Accessed: 2021 May 23. Reference page.
Hassler, M. 2021. World Plants. Synonymic Checklist and Distribution of the World Flora. . Physostigma. Accessed: 23 May 2021.

Vernacular names
English: Balfour
suomi: Kalabarpavut

Physostigma is a genus of flowering plants in the family Fabaceae.[1] It belongs to the subfamily Faboideae.

Species in the genus include:[2]

Physostigma coriaceum Merxm.
Physostigma cylindrospermum (Welw. ex Baker) Holmes
Physostigma laxius Merxm.
Physostigma mesoponticum Taub.
Physostigma venenosum Balf.


"Physostigma". World Flora Online. The World Flora Online Consortium. n.d. Retrieved August 4, 2020.
"Physostigma Balf". Plants of the World Online. The Trustees of the Royal Botanic Gardens, Kew. n.d. Retrieved August 4, 2020.

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