avec les régles de la nomenclature le nom d’ Acacia tortilis (Forsk.) 
Christensen in litteris; non Hayne.’’ 
In 1935 at Amsterdam, Article 54 was amplified to 
provide that the new combination ‘‘must be attributed 
to the author who first published it.’’ Consequently the 
correct name, as the Rules now stand, for the familiar 
Acacia spirocarpa Hochstetter ex A. Richard is Acacia 
tortilis (Forsk.) Hayne. 
It is unfortunate that two names of such long standing 
as Acacia tortilis Hayne and A. spirocarpa Hochstetter 
ex A. Richard cannot be maintained with their familiar 
connotation, but this is impossible. Perhaps at some fu- 
ture date the situation may be clarified. In 1984, Chev- 
alier (in Rev. Bot. Appl. 14: 882), commenting on 
Acacia spirocarpa, made the following suggestive state- 
ment: 
“*Tl semble que c’est une espéce trés peu distincte de 4. Raddiana 
et le nom de 4.tortilis Hayne est sans doute 4 conserver comme espéce 
linéenne englobant les deux bonnes précédentes comme sousespéces. ’’ 
The essential nomenclature of this species and its 
variety follows: 
Acacia tortilis (Forsk.) Hayne Arzneigewachse 
10 (1827) t. 31, quoad nomen non quoad plantam. 
Mimosa tortilis Forskal Fl. Aegypt.-Arab. (1775) 
176. 
Acacia spirocarpa Hochstetter ex A. Richard Tent. 
Fl. Abyss. 1 (1847) 239. 
Acacia spirocarpa Hochst. ex A.Rich. var. B major 
Schweinfurth in Linnaea 35 (1867) 828, t.5. 
var. minor (Schweinf. ) A..F’. Hill comb. nov. 
Acacia spirocarpa Hochst. ex A.Rich. var. a minor 
Schweinfurth in Linnaea 35 (1867) 828, tt. 4, 6. 
Acacia gummifera Delile Fl. Aegypt. Ill. (1813) 31, 
non Willd. 
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