Encephalartos natalensis R.A.Dyer & I.Verd.

Natal giant cycad (en)

Species

Gymnosperms > Cycadales > Zamiaceae > Encephalartos

Characteristics

Plants branched from the base or occasionally unbranched, with stems 3-4 m tall and occasionally up to 6.5 m, 25-40 cm diam., sometimes showing small amount of wool round apex. Leaves 1.3-3.2 m long including petiole 10-26 cm long; rhachis erect spreading, sometimes slightly recurved and twisted towards apex, tomentose at first, glabrescent with age except for densely woolly pulvinus; leaflets mainly spreading in the lower half of leaf and gradually in narrower V disposition towards apex, reduced to several prickles towards base of rhachis, dark green; median leaflets lanceolate to ovate-lanceolate, 16-23 cm long, 2.5-4.5 cm broad, pungent, entire or with 1-5 sharp prickles on one or both margins, more often on the lower leaflets and sometimes almost lobate on young plants. Cones 2-3 together on stout peduncles, dark yellowish-green with thin foxy tomentum. Male cones up to about 45 cm long, 9-10 cm diam., median scales about 4 cm long, 2.5-3 cm broad with sporangial surface obovate-oblong; bulla extended into a beak about 1.5 cm long with acute lateral ridges, the upper and lower facets fairly smooth, terminal facet about 8 mm broad, 7 mm wide vertically and with raised lower margin. Female cones oblong or oblong-ovate in outline up to 50 cm long and 25 cm diam.; median scales 7-8 cm long, 5 cm broad and 4 cm thick vertically with lateral ridges extending into the incurved lateral toothed lobes 2-3 cm long; bulla face about 2 cm prominent, finely rugose round base with upper and lower facets rounded or humped and with prominent blunt rugosites, terminal facet about 2 cm broad and 1.5 cm wide vertically, slightly concave. Seed scarlet, 5 cm long and 2 cm diam., with fleshy beak.
More
Plant dioecious, palm-like. Stem aerial or decumbent, 0.5-3.5 m long, unbranched or branched from base, covered by alternating series of woody bracts and persistent, swollen, truncated leaf bases. Leaves petiolate, pinnate with rachis recurved; median leaflets dentate or entire, pungent-pointed; reduced in size towards base of rachis. Cones Mar.-Oct., appear sessile, yellowish green to brown. Male cones 1-5, oblanceoloid. Female cones up to 4, cylindric to ovoid, broader than male, facets markedly verrucose, central facet concave.
Life form perennial
Growth form tree
Growth support free-standing
Foliage retention evergreen
Sexuality dioecy
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 3.0 - 4.5
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months -
Nitrogen fixer nostocaceae
Photosynthetic pathway -

Environment

Light 4-6
Soil humidity 3-5
Soil texture 5-6
Soil acidity -
Soil nutriment -
Hardiness (USDA) -

Usage

Uses medicinal
Edible -
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Mode -
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Encephalartos natalensis unspecified picture

Distribution

Encephalartos natalensis world distribution map, present in South Africa

Conservation status

Encephalartos natalensis threat status: Vulnerable

Identifiers

LSID urn:lsid:ipni.org:names:297120-1
WFO ID wfo-0000667433
COL ID 39NDW
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Encephalartos natalensis