Biophytum umbraculum Welw.

Baumann, G. (2005). Photographic Guide to Wildflowers of Malawi Wildlife and Environmental Society of Malawi Pages 62 - 63. as Biophytum petersianum (Includes a picture).

Chapano, C. & Mamuto, M. (2003). Plants of the Chimanimani District National Herbarium and Botanic Garden, Zimbabwe Page 9. As Biophytum petersianum

Chapano, C. & Mugarisanwa, N.H. (2003). Plants of the Matobo District National Herbarium and Botanic Garden, Zimbabwe Page 6. As Biophytum petersianum

Da Silva, M.C., Izidine, S. & Amude, A.B. (2004). A preliminary checklist of the vascular plants of Mozambique. Southern African Botanical Diversity Network Report No. 30 Sabonet, Pretoria Page 93. as Biophytum petersianum

Exell, A.W. (1963). Oxalidaceae Flora Zambesiaca 2(1) Pages 157 - 159. as Biophytum petersianum (Includes a picture).

Exell, A.W. & Gonçalves, M.L. (1969). 35. Oxalidaceae Flora de Moçambique Junta de Investigaçoes de Ultramar, Centro de Botanica Pages 10 - 11. as Biophytum petersianum

Lambinon, J. (1983). Oxalidaceae Flore du Rwanda Spermatophytes Volume II Pages 174 - 175. as B. petersianum (Includes a picture).

Lourteig, A. (1981). Biophytum umbraculum (Oxalidaceae) Brittonia 33(3) Pages 451 - 452.

Mapaura, A. & Timberlake, J. (eds) (2004). A checklist of Zimbabwean vascular plants Southern African Botanical Diversity Network Report No. 33 Sabonet, Pretoria and Harare Page 65. as Biophytum petersianum

Phiri, P.S.M. (2005). A Checklist of Zambian Vascular Plants Southern African Botanical Diversity Network Report No. 32 Page 83.

Pickering, H. & Roe, E. (2009). Wild Flowers of the Victoria Falls Area Helen Pickering, London Page 89. (Includes a picture).

Strugnell, A.M. (2006). A Checklist of the Spermatophytes of Mount Mulanje, Malawi Scripta Botanica Belgica 34 National Botanic Garden of Belgium Page 142. as Biophytum petersianum