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Open 23/09/2008
Update 05/10/2018
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Identification of Encephalartos dyerianus

                                                              Encephalartos dyerianus
 
                        Description: Stem: Aerial and erect although long stems tend to be come decumbent. The aerial part of the stem is unbranched although the plants usually produce suckers. Stem can attain a length of up to 6 m above the ground and diameter of 400-600 mm. The stem is protect by a layer of very uniform leaf bases.
                        Leaves: Of all southern Africa cycad species, this one probably has a densest leaf canopy. Both sides of the leaves have a same pale bluish-green colour. The leaves are hairless, rigid and curve strongly outwards for a short distance immediately above the leaf base, only the curve gently inwards along the remainder of it length. The leaves are 1.23-1.70m long. Their pp-angle increases from 60-80 at the leaf apex to 150-180 at the blade’s base. The pr-angle is 20-30 at the leaf apex and increases to 70-80 at the blade’s base. The s-angle is 0-+15 at the leaf apex and increases slightly to approximately +20 or + 30 at the blade’s base. Leaflets do not shield one another, or only slightly incubously . Petiole: This appears to virtually non-existent but it up to 60 mm long with  a brow basal collar which usually is inconspicuous because it is largely covered by the cataphylls of the stem apex. Medians leaflets: 170-240mm long, 10-18 mm wide, leathery and without nodules. The upper leaflets surface is very slightly concaves both transversely and longitudinally. Poorly defined longitudinal ridges occur on the lower leaflet surface . Leaflet argins are entrie and unthickened.The leaflet apex is pungent, Basal leaflets: These decrease in size basipetally to several spines.
                        Habitat : The species is restricted to two granite outcrops in the eastern part of Limpopo; one near Mica and the other near Gravelotte. The plants occur in savannah amongst large boulder on the sandy soil.The area is about 700 m above sea level and receives an annual rainfall of 400-500 mm which falls mainly in summer. The species was never abundant and is at present very endangered due largely to activities of collectors. The problem is exacerbated by a lack of seeding regeneration which can apparently be ascribed to absence of a suitable insect pollinatior.
                Cultivation : The plants grow fairly slowly but can readily be propagated from seed and sucker. It grows well when exposed to  full sunlight And it forst resistant.
           
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