Encephalartos ngoyanus I.Verd.

Ngoye dwarf cycad (en)

Species

Gymnosperms > Cycadales > Zamiaceae > Encephalartos

Characteristics

Stems mainly subterranean sometimes with about 20 cm exposed, about 20 cm diam. at ground level, top dome shaped; roots of plants dug up in the veld not stout. Leaves 3 to 7 in a whorl, about 60 cm long (in shade up to 120 cm long); petiole slender, 10 to 30 cm long and about 6-8 mm wide just above pulvinus, covered with long silky and woolly off-white pubescence (densely so at base), glabrescent; rhachis slender, pubescent with long silky-woolly, off-white hairs, becoming glabrescent, upper surface very narrow, rounded, with 2 longitudinal grooves (not always obvious in living state), lower surface rounded (through greater arc); leaflets arising in a medium V, sub-oblique across the rhachis, linear-lanceolate, 7-8 cm long, 9-11 mm broad (in shade up to 12 cm long and 1 x 5 cm broad) reducing in size abruptly to apex of leaf and gradually to base, usually to a miniature leaflet (rarely lobate or to so small a leaflet that it looks like a prickel), margins with 1 to 3 proclivent teeth on lower margin or occasionally entire (the uppermost tooth near the apex), both surfaces thinly pubescent (pubescence obvious on margins) glabrescent, nerves showing on lower surface, sometimes also on upper (not so obvious on growing plant), apices pungent, base subequally narrowed to about 3 to 4 mm (not obviously folded or twisted at the base. Male cone (past maturity, dry) remains of peduncle 2 cm long; cone 20 cm long, 4-5 cm diam., more or less cylindric; median scales (lower surface) 1-8 cm long and 2-2 cm wide, covered with sporangia except for a narrow area, 3 mm-5 mm wide, upper surface smooth and shallowly concave; scale face smooth, flat 2-2 cm broad and 1-4 cm vertically (no shoulders), rhomboid with an inner rhomboid area faintly indicated but not raised; lower margin with an acute edge produced downwards to overlap slightly the scale below, upper margin blunt. Female cone pale olive-green turning yellow with maturity, shortly pedunculate, ellipsoid-subovate in outline, about 23 cm long and 10 cm diam.,scales in about 9 spirals; median scale, face 4-5 cm in width, 3 cm vertically, more or less flattened or slightly convex above with only a faint indication of a flatish rhomboid area in lower portion, (no lateral angles on scale face); lower edge a sharp ridge produced downwards, slightly overlapping the scale below; upper edge blunt; stipe yellow tinged with orange, quadrate, 2 cm long; arms short winged (spreading, not decurved), same colour as stipe. Seed scarlet about 2-7 cm long, 2 cm broad, truncate and fleshy at the distal end, area of attachment small, about 6 mm diam.
More
Stem subterranean or with crown exposed, usually unbranched, up to about 30 cm long and 20 cm diam., with woolly bracts. Leaves 76-178 mm a whorl, 60-120 cm long including slender petiole 10-30 cm long; rhachis erect or slightly recurving with silky and woolly off-white tomentum, glabrescent except for pulvinus; leaflets thinly pubescent at first, glabrescent, reduced in size abruptly near apex of leaf and gradually towards base but rarely to a prickle; median leaflets linear-lanceolate, pungent, 7-8 cm long, 9-11 mm broad, occasionally in shade up to 12 cm long and 1.5 cm broad, usually with 1-3 teeth on lower margin, rarely entire. Cones solitary on short stout peduncle, pale olive-green turning yellow. Male cones more or less cylindric, 20-25 cm long, 4.5-6 cm diam.; median scales 2.5-2.8 cm long, 2.2-2.5 cm broad, 1.4-1.5 cm thick vertically, laterally angled; bulla face projecting in a subcylindric beak 7-8 mm long with the terminal facet only faintly indicated except for lower margin which is acute, decurved and sometimes slightly overlapping scale below. Female cones ovate-oblong in outline about 23 cm long, 10 cm diam.; median scales about 5 cm long, 4-5 cm broad and 3 cm thick vertically, laterally ridged and extended into incurved lobes about 5 mm long; bulla face only slightly projecting with upper facet humped, terminal facet faintly defined on upper mar gin, lower margin acute decurved and sometimes slightly overlapping scale below. Seed scarlet, 2.7-3 cm long, 2 cm diam.
Life form perennial
Growth form shrub
Growth support free-standing
Foliage retention evergreen
Sexuality dioecy
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Nitrogen fixer nostocaceae
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Environment

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Usage

Uses environmental use medicinal
Edible -
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Cultivation

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Images

Encephalartos ngoyanus unspecified picture

Distribution

Encephalartos ngoyanus world distribution map, present in South Africa

Conservation status

Encephalartos ngoyanus threat status: Vulnerable

Identifiers

LSID urn:lsid:ipni.org:names:297121-1
WFO ID wfo-0000667434
COL ID 39NDX
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Encephalartos ngoyanus