Tetragonia decumbens Mill.

Species

Angiosperms > Caryophyllales > Aizoaceae > Aizooideae > Tetragonia > Tetragonia subg. Tetragonia

Characteristics

Decumbent or trailing undershrub with stout pale stems, densely papillose and with some vesicular hairs on young growth. Leaves thick, obovate, orbicular or oblong on lateral branches, with midvein and sometimes lateral veins visible below, 1–6 cm long, 5–30 mm wide, tapering to base, decurrent. Flowers in groups of 3–5 in upper axils; pedicels 5–15 mm long, stout, papillose. Perianth segments 4, broadly ovate, 5 mm long, papillose outside, yellow inside. Stamens many, in 2 ranks. Ovary papillose; styles 4, stout, recurved, 2–3 mm long. Fruit dry, with 2 large and 2 smaller coriaceous or woody lateral wings alternating with small ridges, c. 10 mm long and 15 mm broad, papillose, pale. Seeds 4, pear-shaped, c. 3 mm long, smooth, brown.
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Perennial herb, ± 0.5 m high; prostrate, covered with glistening papillae and some hairs, woody when old, terete but with narrow decurrent lines. Leaves narrow to base but not petiolate, oblong, obovate or nearly orbicular, edges recurved or revolute, papillose-hirsute. Flowers 3-5 per cyme. Perianth densely papillose, 4-lobed. Stamens many, yellow. Styles 4 or 5, or less in transitional flowers. Flowering time Dec., Jan. Fruit with 4 rigid wings, flat on top, small intermediate ridge between wings, yellow.
Sprawling perennial, with branches up to 1 m long. Leaves papillose-hirsute, obovate-oblong, fleshy. Flowers in branched axillary clusters, smaller than leaves, yellow. Fruit with rigid wings. Mainly Aug.-Nov.
Sepals free. Sprawling perennial with branches to 1 m. Leaves papillose-hirsute, obovate-oblong, fleshy. Flowers in branched axillary clusters shorter than leaves, yellow. Fruits with rigid wings.
A trailing herb or shrub. It grows 10-30 cm high. It can spread 2 m wide. The leaves are dark green. They are broad and succulent. The flowers are yellow. The fruit have 4 wings.
Life form perennial
Growth form herb
Growth support -
Foliage retention evergreen
Sexuality -
Pollination -
Spread -
Mature width (meter) 2.0
Mature height (meter) 0.3
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months -
Fruit color
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

It is a subtropical plant. It grows on coastal sand and sand dunes. It suits hot arid, sandy places. It is a subtropical plant. In Southern Africa it grows from near sea level to 700 m above sea level.
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Naturalised on coastal and estuarine sand dunes near Perth andGeraldton, W.A. and on the coast near Adelaide.
Coastal sand dunes.
Light -
Soil humidity -
Soil texture 5-6
Soil acidity -
Soil nutriment -
Hardiness (USDA) 8-11

Usage

The leaves are cooked and used as a substitute for spinach. Adding butter or Oxalis leaves improves the flavour.
Uses animal food environmental use food medicinal
Edible leaves stems
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

It can be grown from the winged fruit.
Mode seedlings
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Leaf

Tetragonia decumbens leaf picture by Maarten Vanhove (cc-by-sa)
Tetragonia decumbens leaf picture by Maarten Vanhove (cc-by-sa)
Tetragonia decumbens leaf picture by Maarten Vanhove (cc-by-sa)

Distribution

Tetragonia decumbens world distribution map, present in Australia, Namibia, and South Africa

Identifiers

LSID -
WFO ID wfo-0001292977
COL ID 55MSZ
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Aizoon perfoliatum Tetragonia obovata Tetragonia perfoliata Tetragonia tetrapteris Tetragonia zeyheri Tetragonia decumbens