Flora of Southern Africa : the Republic of South Africa, Basutoland, Swaziland and South West Africa - Codd, L. E. W. (Govt. Printer, 2001)

Prodromus systematis naturalis regni vegetabilis, sive, Enumeratio contracta ordinum generum specierumque plantarum huc usque cognitarium, juxta methodi naturalis, normas digesta - Candolle, Augustin Pyramus de, 1778 -1841 (Sumptibus Sociorum Treuttel et Würtz, 1837)

Travels in the interior of southern Africa - Burchell, William J. (William John), 1781 -1863 (Printed for Longman, Hurst, Rees, Orme, and Brown, 1822)

Travels in the interior of southern Africa - Burchell, William J. (William John), 1781 -1863 (Printed for Longman, Hurst, Rees, Orme, and Brown, 1822)

Travels in the interior of southern Africa - Burchell, William J. (William John), 1781 -1863 (Printed for Longman, Hurst, Rees, Orme, and Brown, 1822)

Travels in the interior of southern Africa - Burchell, William J. (William John), 1781 -1863 (Printed for Longman, Hurst, Rees, Orme, and Brown, 1822)

Travels in the interior of southern Africa - Burchell, William J. (William John), 1781 -1863 (Printed for Longman, Hurst, Rees, Orme, and Brown, 1822)