Encephalartos transvenosus Stapf & Burtt Davy

Modjadji cycad (en)

Species

Gymnosperms > Cycadales > Zamiaceae > Encephalartos

Characteristics

Plant generally unbranched, occasionally branched after injury to crown, maximum height about 13 m (35-40 ft, many between 4.6-7.6 m), 40-45 cm diam., apex of stem with some brown wool. Leaves 1-2.5 m long with fairly short petiole, densely tomentose at first, glabrescent, except for pulvinus; rhachis mainly straight, recurving towards apex; leaflets spreading-recurved more or less at right angles to rhachis, upper ones often somewhat overlapping, reduced in size towards apex and to several prickles at base; median leaflets lanceolate to ovate-lanceolate, sometimes slightly falcate, 10-20 cm long, 2-3.5 cm broad, smooth on upper surface, with unevenly prominent veins on lower surface, remotely 2-5-toothed on upper margin towards base of leaflet, 1-3-toothed on lower margin, with pungent apex. Cones 2-4 together on short stout tomentose peduncles. Male cones subcylindric, 30-40 cm long, 13-15 cm diam., obtusely rounded at base and apex; median scales 4-4.5 cm long, 2.5 cm broad with sharp lateral ridges; bulla face projecting 1-1.5 cm, with deciduous reddish hairs, upper and lower facets variably slightly angled, terminal facet 1.5-1.6 broad, 8-13 mm wide vertically. Female cones oblong-oval in outline, 50-80 cm long, 20-30 cm diam.; median scales about 8 cm long, 6-7 cm broad, 3-4 cm thick vertically; bulla face projecting about 2.5 cm with fairly acute lateral ridges extending into the incurved lateral lobes 1-2 cm long, slightly verrucose to nearly smooth on exposed portion, upper and lower facets rounded with slight ridging, terminal facet thinly fawn-tomentose, 1.5-2 cm broad, 1-1.5 cm wide vertically. Seed red, angled by compression, 4.5-5 cm long, 2.5 cm diam., with fleshy beak.
More
A tall plant. It grows to 12 m tall. The trunk is thick and scarred. It has a netted pattern. The crown is made up of shiny straight leaves. The leaves are spiny and up to 2.4 m long. The leaflets are broad; the middle one being 3 cm wide. They are often slightly curved and have teeth along the edges. The fruit occur as cones. 2 to 4 cones occur together. They are large and the female cones are the biggest. They can be 80 cm long and weigh 34 kg, They occur in the heart of the big green leaves. The seed are orange red. The thin fully ripe flesh around the seed is edible.
Plant generally unbranched. Stems up to 13 m high. Leaves up to 2.5 m long, glossy, dark olive-green above, matt yellowish green below, with contrasting yellow rhachises. Leaflets spreading-recurved from rhachis, lanceolate to ovate-lanceolate, sometimes falcate, 100-200 x 20-35 mm, toothed with a pungent apex.
Life form perennial
Growth form tree
Growth support free-standing
Foliage retention evergreen
Sexuality dioecy
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 12.5
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

A tropical plant. It grows in the mountains in South Africa. It grows in forests and on hillsides. In South Africa it grows in regions with warm to hot summers and mild but frost free winters. It grows between 600-1000 m altitude. The rainfall is 500-1000 mm with a summer maximum.
Light 4-6
Soil humidity 3-5
Soil texture 3-4
Soil acidity -
Soil nutriment -
Hardiness (USDA) 9-9

Usage

The fully ripe flesh around the seeds is eaten, especially by children. The stem is cut into slices and buried until it becomes partly fermented then it is sliced and sun dried before crushing into flour. This is eaten after boiling. CAUTION: The seed kernel is poisonous.
Uses medicinal poison
Edible -
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Plants are grown from seed. Seed germinate easily. Plants can be grown from suckers. Suckers transplant easily.
Mode seedlings suckers
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -7
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Encephalartos transvenosus unspecified picture

Distribution

Encephalartos transvenosus world distribution map, present in South Africa

Conservation status

Encephalartos transvenosus threat status: Near Threatened

Identifiers

LSID urn:lsid:ipni.org:names:297138-1
WFO ID wfo-0000667462
COL ID 6F86C
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Encephalartos transvenosus