Encephalartos lanatus Stapf & Burtt Davy

Olifants river cycad (en)

Species

Gymnosperms > Cycadales > Zamiaceae > Encephalartos

Characteristics

Plants unbranched or sometimes branched from the base; stems up to about 1 m tall and only very rarely up to 3 m long and reclining, up to about 25 cm diam., with densely grey woolly bracts. Leaves 6-1 m long, including petiole 20-25 cm long, white or grey woolly when young except under surface of leaflets, glabrescent except base of petiole and pulvinus; rhachis recurved and often slightly twisted; leaflets glaucous when young, entire, pungent, set in V formation above middle of rhachis and usually overlapping, reduced in size to base and apex of rhachis; median leaflets 10-13 cm long, 6-8 mm broad, finely 10-14-nerved on under surface. Cones 1-4 together on short peduncles, covered by a dense light cream to greyish tomentum. Male cones subcylindric, 25-30 cm long, 5-6 cm diam., narrowed to both ends; median scales about 2.3 cm long and 2.5-3.2 cm broad, with lateral ridges; bulla face flattened, about 2.5 cm broad and 1.5 cm wide vertically (with tomentum). Female cones oblong in outline, 25-35 cm long, 12-15 cm diam., slightly narrowed to rounded apex and base; median scales 3-3.5 cm long; bulla 4.3-5 cm broad, 2.5-2.7 cm thick vertically, with incurved lateral lobes about 5 mm long, with acute lateral ridges; bulla with base glabrous, yellow or greenish-yellow, upper and lower facets woolly, rounded, terminal facet indistinct, about 1.5 cm diam. Seeds yellow, oblong-orbicular, 2.5-3 cm long, 2.25-2.5 cm broad with scanty pulp.
More
Plants usually unbranched. Stems up to 1 m high. Cones with a dense, woolly covering, 1-4 together. Leaves particularly recurved at tip, up to 1 m long. Median leaflets 100-130 x 6-8 mm, finely 10-14-nerved on undersurface, flat.
Life form perennial
Growth form
Growth support free-standing
Foliage retention evergreen
Sexuality dioecy
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 1.0
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color -
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer nostocaceae
Photosynthetic pathway -

Environment

Light -
Soil humidity -
Soil texture 7-8
Soil acidity -
Soil nutriment -
Hardiness (USDA) 9-12

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 lanatus unspecified picture

Distribution

Encephalartos lanatus world distribution map, present in South Africa

Conservation status

Encephalartos lanatus threat status: Vulnerable

Identifiers

LSID urn:lsid:ipni.org:names:297099-1
WFO ID wfo-0000667402
COL ID 6F7T2
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Encephalartos lanatus