P. P. J. Herman

Plants of the northern provinces of South Africa: keys and diagnostic characters.

Ernst F Retief, P. P. J. Herman · 1997 · 62 citations

Life Sciences, Botany, Plant Sciences +15

Revision of the <i>Tarchonanthus</i> camphoratus complex (Asteraceae-Tarchonantheae) in southern Africa

P. P. J. Herman · Bothalia · 2002 · 17 citations · Full text

Life Sciences, Botany, Plant Biology +17

Strelitzia; Plants of the northern provinces of South Africa Keys and diagnostic characters

E. Retief, P. P. J. Herman · 1997 · 14 citations

Life Sciences, Botany, Plant Sciences +8

Growth rings in tropical woods

P. P. J. Herman · South African Journal of Botany · 1991 · 10 citations · Full text

Natural Resources, Forestry, Forest Ecology +4