African Plant Database

Acacia nigrescens Oliv.
Family : Mimosaceae
Protologue : Fl. Trop. Afr. [Oliver et al.] 2: 340 (1871)
Information on the genus : Acacia
Status for SA : accepted (present)
Status for TA : accepted (present)
Synonym(s) Homotypic
 Acacia nigrescens Oliv. var. nigrescens
 Vachellia nigrescens (Oliv.) P.J.H. Hurter (2008)
 Senegalia nigrescens (Oliv.) P.J.H. Hurter (2013)
Synonym(s) Heterotypic
=Albizia lugardii N.E. Br.
=Acacia nigrescens var. pallens Benth.
=Acacia pallens (Benth.) Rolfe (1907)
=Acacia passargei Harms
=Acacia schliebenii Harms (1935)
=Acacia brosigii Harms
=Acacia perrottii Warb.
Taxon infra-specific
Acacia nigrescens Oliv. var. nigrescens
Ecology and distribution
Trop. Afr.
Biology : Tree 4-16-30 m with rounded crown; branches ascending, spreading; young plants with long cylindrical profile; trunk 50-75 cm Ø, beset with large raised knobs with a hooked prickle on top (often absent in old trees), bark fissured;
  see more in the book
Ecology : Woodland, bushland, wooded grassland, often near rivers and drainage lines; rarely on sandy soils, rocky hillsides on shallow soils, on alluvial soils in valleys; occasionally dominant (Zimbabwe); etc...
  Little variable: generally glabrous, but occasionally puberulous to pubescent.
  Namibia/Caprivi Strip, Botswana.
  Confusion possible with A. mellifera, A. goetzei, A. burkei , although distictive (thorns on large knobs of trunk). Sometimes flowering when leafless (confusion possible with A. galpinii ). - Sterile specimens of Entada rotundifolia are similar. [see mor

Bibliography for Southern Africa :
  • Fl. S. Africa 16[1]: 54-56 (1975).
  • Fl. Pl. Africa 45[3&4]: t.1797 (1978).
More info on :
see under Jstor_African Plant Initiative
see under The International Plant Name Index
see under Flora of Mozambique
see under African Plants - a Photo Guide
see under Flora of Zimbabwe
More information >> ( work in progress )
Record n°67242
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