|The Cycad Pages
- Encephalartos mackenziei L.E.Newton, "Bot. J. Linn. Soc. 140: 187-192, figs 1-6" (2001). H—EA
- "TYPE: Sudan, Equatorie Province, P.C. Mackenzie s.n., 11 Apr 1995 (holo EA)"
Honouring Mr Paul Mackenzie, proprietor of the Rosslyn River Garden Centre,
Nairobi and collector of the type specimen.
First collected and recognised as distinct in 1995
Distinguished from E. septentrionalis by the more robust habit with
taller and thicker stems that sucker more freely from the base, the green leaves
with the rachis not grooved between leaflets, the broader leaflets with 3 prickles near
the base of the lower margin and lacking prickles along the upper margin, the
larger, glabrous microsporophylls, the very much larger megasporophylls and
the dark red seed
Distribution and habitat:
South-eastern Sudan, seasonally dry open woodland on stony country.
Apparently not at risk, although political unrest makes access to the region
very difficult at present, possibly reducing potential threats but also precluding