S.M.Phillips (Schinz) 1997 - Phillips SM (1997) The Eriocaulon transvaalicum Complex and Some Other Species of Eriocaulon from Africa. Kew Bulletin 52(1): 51-72. doi: 10.2307/4117841.
There is no corrections for Eriocaulon transvaalicum subsp. tofieldifolium yet.