1. Quantifying the Trade in Cycads (Encephalartos Species) in the Traditional Medicine Markets of Johannesburg and Durban, South Africa1
Stephen R. Cousins, Vivienne L. Williams, Ed T. F. Witkowski
Economic Botany  vol: 65  issue: 4  first page: 356  year: 2011  
doi: 10.1007/s12231-011-9173-0

2. Allozyme and DNA sequence comparisons of nine species of Encephalartos (Zamiaceae)
Herman van der Bank, Michael Wink, Piet Vorster, Jens Treutlein, Louise Brand, Michelle van der Bank, Johan Hurter
Biochemical Systematics and Ecology  vol: 29  issue: 3  first page: 241  year: 2001  
doi: 10.1016/S0305-1978(00)00064-8

3. Sex identification in Encephalartos natalensis (Dyer and Verdoorn) using RAPD markers
Surya Prakash, Johannes Van Staden
Euphytica  vol: 152  issue: 2  first page: 197  year: 2006  
doi: 10.1007/s10681-006-9198-0

4. Phylogeny of Encephalartos: Some Eastern Cape Species
P. Vorster, F. H. Van Der Bank, M. Van Der Bank, M. Wink
The Botanical Review  vol: 70  issue: 2  first page: 250  year: 2004  
doi: 10.1663/0006-8101(2004)070[0250:POESEC]2.0.CO;2

5. Non-leguminous seed plants in Southern Africa which fix nitrogen symbiotically
N. Grobbelaar, J. M. Strauss, E. G. Groenewald
Plant and Soil  vol: 35  issue: 1  first page: 325  year: 1971  
doi: 10.1007/BF02661861

6. Encephalartos graniticolus (Zamiaceae): a new species from the north-eastern Transvaal
P.J. Robbertse, Suzelle. van der Westhuizen, P. Vorster
South African Journal of Botany  vol: 54  issue: 4  first page: 363  year: 1988  
doi: 10.1016/S0254-6299(16)31302-3

7. Encephalartos senticosus (Zamiaceae): a new species from northern KwaZulu-Natal and Swaziland
P. Vorster
South African Journal of Botany  vol: 62  issue: 2  first page: 76  year: 1996  
doi: 10.1016/S0254-6299(15)30594-9

8. Molecular Relationships in Encephalartos (Zamiaceae, Cycadales) Based on Nucleotide Sequences of Nuclear ITS 1&2, Rbcl, and Genomic ISSR Fingerprinting
J. Treutlein, P. Vorster, M. Wink
Plant Biology  vol: 7  issue: 1  first page: 79  year: 2005  
doi: 10.1055/s-2004-830478

9. Morphometric analysis of vegetative characters of Encephalartos woodii, E. natalensis and an apparent intermediate
R. Osborne, R.T. Paschke
South African Journal of Botany  vol: 59  issue: 4  first page: 455  year: 1993  
doi: 10.1016/S0254-6299(16)30719-0

10. Encephalartos verrucosus (Zamiaceae): a new species from the north-eastern Transvaal
P.J. Robbertse, Suzelle van der Westhuizen, P. Vorster
South African Journal of Botany  vol: 54  issue: 5  first page: 487  year: 1988  
doi: 10.1016/S0254-6299(16)31283-2

11. Encephalartos aplanatus (Zamiaceae): a new species from Swaziland
P. Vorster
South African Journal of Botany  vol: 62  issue: 1  first page: 57  year: 1996  
doi: 10.1016/S0254-6299(15)30580-9

12. An interpretation of Cretaceous and tertiary biota in polar regions
Daniel I. Axelrod
Palaeogeography, Palaeoclimatology, Palaeoecology  vol: 45  issue: 2  first page: 105  year: 1984  
doi: 10.1016/0031-0182(84)90037-3

13. Epicuticular waxes and glaucousness of Encephalartos leaves
Roy Osborne, Jan F. Stevens
Phytochemistry  vol: 42  issue: 5  first page: 1335  year: 1996  
doi: 10.1016/0031-9422(95)00951-5

14. The magical and medicinal usage of Stangeria eriopus in South Africa
Roy Osborne, Andrew Grove, Peter Oh, Tom J. Mabry, Jack C. Ng, Alan A. Seawright
Journal of Ethnopharmacology  vol: 43  issue: 2  first page: 67  year: 1994  
doi: 10.1016/0378-8741(94)90005-1

15. African Cycad Ecology, Ethnobotany and Conservation: A Synthesis
S. R. Cousins, E. T. F. Witkowski
The Botanical Review  vol: 83  issue: 2  first page: 152  year: 2017  
doi: 10.1007/s12229-017-9183-4

16. Height increment ofCycas micronesicainforms conservation decisions
Thomas E. Marler, M. Patrick Griffith, Murukesan V. Krishnapillai
Plant Signaling & Behavior  vol: 15  issue: 12  first page: 1830237  year: 2020  
doi: 10.1080/15592324.2020.1830237

17. Significance of monosulcate pollen abundance in Mesozoic sediments
Norman O. Frederiksen
Lethaia  vol: 13  issue: 1  first page: 1  year: 1980  
doi: 10.1111/j.1502-3931.1980.tb01023.x

18. A Red List account of Africa's cycads and implications of considering life-history and threats
Janice S. Golding, P. Johan H. Hurter
Biodiversity & Conservation  vol: 12  issue: 3  first page: 507  year: 2003  
doi: 10.1023/A:1022472801638

19. Encephalartos hirsutus (Zamiaceae): a newly described species from South Africa
P.J.H. Hurter, H.F. Glen
South African Journal of Botany  vol: 62  issue: 1  first page: 46  year: 1996  
doi: 10.1016/S0254-6299(15)30577-9

20. Seed anatomy and development in cycads and Ginkgo, keys for understanding the evolution of seeds
Cecilia Zumajo-Cardona, Samantha Frangos, Dennis W. Stevenson
Flora  vol: 285  first page: 151951  year: 2021  
doi: 10.1016/j.flora.2021.151951

21. Exploitation of Encephalartos transvenosus outside and inside Mphaphuli Cycads Nature Reserve, Limpopo Province, South Africa
A. M. Ravele, R. A. Makhado
African Journal of Ecology  vol: 48  issue: 1  first page: 105  year: 2010  
doi: 10.1111/j.1365-2028.2009.01086.x

22. Variation in the chemical composition of cone volatiles within the African cycad genus Encephalartos
Terence N. Suinyuy, John S. Donaldson, Steven D. Johnson
Phytochemistry  vol: 85  first page: 82  year: 2013  
doi: 10.1016/j.phytochem.2012.09.016

23. Coning and sex ratio of Encephalartos transvenosus at the Modjadji Nature Reserve
N. Grobbelaar, J.J.M. Meyer, J. Burchmore
South African Journal of Botany  vol: 55  issue: 1  first page: 79  year: 1989  
doi: 10.1016/S0254-6299(16)31235-2

24. Encephalartos aemulans (Zamiaceae), a new species from northern Natal
P. Vorster
South African Journal of Botany  vol: 56  issue: 2  first page: 239  year: 1990  
doi: 10.1016/S0254-6299(16)31092-4

25. Phytochemistry of the Cycadales
Roy Osborne, Dennis Wm. Stevenson, Daneel Ferreira
The Botanical Review  vol: 91  issue: 3  first page: 221  year: 2025  
doi: 10.1007/s12229-025-09313-y

26. Phylogenetic relationships, based on allozyme data, between six cycad taxa indigenous to South Africa
F.H. van der Bank, P. Vorster, M. van der Bank
South African Journal of Botany  vol: 64  issue: 3  first page: 182  year: 1998  
doi: 10.1016/S0254-6299(15)30864-4

27. Isolation and quantification of the toxic methylazoxymethanol glycoside macrozamin in selected South African cycad species
Jerald J. Nair, Johannes van Staden
South African Journal of Botany  vol: 82  first page: 108  year: 2012  
doi: 10.1016/j.sajb.2012.07.011

28. Demography of the cycad Ceratozamia mirandae (Zamiaceae) under disturbed and undisturbed conditions in a biosphere reserve of Mexico
Miguel A. Pérez-Farrera, Andrew P. Vovides, Pablo Octavio-Aguilar, Jorge González-Astorga, Jesús de la Cruz-Rodríguez, Rigoberto Hernández -Jonapá, Susana Maza Villalobos-Méndez
Plant Ecology  vol: 187  issue: 1  first page: 97  year: 2006  
doi: 10.1007/s11258-006-9135-2

29. Monosaccharide composition of the mucilages in Encephalartos Lehm. (Zamiaceae)
Aldo Moretti, Sergio Sabato, Gesualdo Siniscalco Gigliano
Giornale botanico italiano  vol: 115  issue: 6  first page: 291  year: 1981  
doi: 10.1080/11263508109427986

30. Alkanes of foliar epicuticular waxes of the genus Encephalartos
R. Osborne, M.L.F. Salatino, A. Salatino
Phytochemistry  vol: 28  issue: 11  first page: 3027  year: 1989  
doi: 10.1016/0031-9422(89)80272-9

31. Encephalartos middelburgensis (Zamiaceae): a new species from the Transvaal
P.J. Robbertse, Suzelle van der Westhuizen, P. Vorster
South African Journal of Botany  vol: 55  issue: 1  first page: 122  year: 1989  
doi: 10.1016/S0254-6299(16)31240-6

32. Alkanes of foliar epicuticular waxes from five cycad genera in the zamiaceae
R. Osborne, A. Salatino, M.L.F. Salatino, C.M. Sekiya, M.Vazquez Torres
Phytochemistry  vol: 33  issue: 3  first page: 607  year: 1993  
doi: 10.1016/0031-9422(93)85456-2

33. Encephalartos msinganus (Zamiaceae): a new species from KwaZulu-Natal
P. Vorster
South African Journal of Botany  vol: 62  issue: 2  first page: 67  year: 1996  
doi: 10.1016/S0254-6299(15)30592-5

34. Status and conservation needs of Cycas pectinata Buch.-Ham. in its natural habitat at Baroiyadhala National Park, Bangladesh
M.K. Hossain, M.A. Hossain, S. Hossain, M.R. Rahman, M.I. Hossain, S.K. Nath, M.B.N. Siddiqui
Journal of Threatened Taxa  vol: 13  issue: 8  first page: 19070  year: 2021  
doi: 10.11609/jott.5922.13.8.19070-19078

35. Encephalartos brevifoliolatus (Zamiaceae): a new species from the Northern Province
P. Vorster
South African Journal of Botany  vol: 62  issue: 1  first page: 61  year: 1996  
doi: 10.1016/S0254-6299(15)30581-0

36. Carcinogenic and neurotoxic components in the cycad Encephalartos altensteinii Lehm. (Family Zamiaceae)
Werner K.A. Louw, Willem Oelofsen
Toxicon  vol: 13  issue: 6  first page: 447  year: 1975  
doi: 10.1016/0041-0101(75)90173-7

37. Encephalartos venetus (Zamiaceae): a new species from the Northern Province
P. Vorster
South African Journal of Botany  vol: 62  issue: 2  first page: 71  year: 1996  
doi: 10.1016/S0254-6299(15)30593-7