Pipturus argenteus Wedd.

Species

Angiosperms > Rosales > Urticaceae > Pipturus

Characteristics

Dioecious shrub or tree to 10 m high. Branchlets strigose. Leaves alternate; lamina ovate, serrate or crenate, attenuate to acuminate apex, rounded (or shallowly cordate) at base, (3–) 8–15 (–18) cm long, (1–) 2–8.5 cm wide (larger leaves with lamina to 25 cm long recorded for Christmas Island), often glossy green above, densely strigose, densely white-woolly beneath (leaf indumentum is variable); cystoliths punctiform, dense; lateral veins 5–7 pairs, the basal prominent (3 strong veins from base); petiole mostly (2–) 5–12 cm long; stipules less than 3 mm long. Inflorescences unisexual, single to few, spicate, (1–) 4–9 cm long, ± as long as petiole; flowers c. 1 mm long, clustered at intervals, subsessile to sessile, densely strigose. Male flowers: tepals 4; stamens 4; pistillode present. Female flowers: perianth tubular, the orifice 3–5-dentate; style long. Fruiting clusters 4–8 mm across, translucent-white. Achenes enclosed by succulent perianth.
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A small tree up to 4-8 m tall. It spreads 4-8 m across. Young growth is silvery grey. The bark is grey to brown and has rows of small swellings along it. The leaves are alternate. They are 7-26 cm long by 2-8 cm wide. The leaves are green on top and woolly white underneath. They have fine to coarse teeth along the edges. They have a long stalk and 3 prominent veins. Plants are separately male and female. The flowers are greenish white. They occur in small round clusters. These form spikes about 6 cm long. They grow on older wood. The fruit are fleshy and like a mulberry. They are 0.6 cm across and white. They have many small seeds. They are edible.
Life form perennial
Growth form tree
Growth support free-standing
Foliage retention evergreen
Sexuality dioecy
Pollination -
Spread -
Mature width (meter) 4.0 - 8.0
Mature height (meter) 10.0
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color -
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway c3

Environment

A tropical plant but can grow in temperate areas. It is damaged by frost. It grows in forests and areas that are not too dry. It occurs from the coast up to at least 1800 m altitude in Papua New Guinea. It is frequent on rocky cliffs near the sea in the Pacific.
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Grows in open rainforest, especially as thickets in disturbed areas (e.g. regrowth after clearing), also wet sclerophyll forest and woodland. On Christmas Island common in marginal and open forest, along roads and tracks and on soil tips (Du Puy 1993).
Disturbed habitats, especially in the eastern part of its area of distribution, at elevations from sea-level up to 1,250 metres. Found on beaches in Guam and in limestone soils. Banks of rivers and smaller streams in Queensland.
Light -
Soil humidity -
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) 8-12

Usage

The fibres of this plant have a good tensile strength, and are used to make string and rope (Du Puy 1993). It was used in the Marshall Islands for fibres, cordage, and fishing lines (Save Our Waterways Inc. 2020). It has traditional medicinal uses in some Pacific nations. The fruits are edible bush tucker. See Fern (2014 onwards).
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The bark and leaves are eaten. The ripe fruit is also recorded as eaten. The seeds are eaten by children in Tokelau.
Uses animal food dye environmental use fiber food fuel material medicinal oil social use wood
Edible barks fruits leaves seeds
Therapeutic use Ache(Stomach) (unspecified), Dysentery (unspecified), Laxative (unspecified), Toothache (unspecified), Pediculicide (unspecified), Medicine (unspecified), Wound (unspecified), Boil (unspecified), Burn (unspecified), Herpes (unspecified), Stomatitis (unspecified), Thrush (unspecified), Tinea (unspecified), Pimple (unspecified), Pediculifuge (unspecified)
Human toxicity -
Animal toxicity -

Cultivation

It grows wild. Plants can be grown from fresh seed or cuttings of firm semi-hard wood.
Mode cuttings seedlings
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Pipturus argenteus unspecified picture

Distribution

Pipturus argenteus world distribution map, present in Australia, Cook Islands, and United States of America

Conservation status

Pipturus argenteus threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:855911-1
WFO ID wfo-0001143392
COL ID 6VKP3
BDTFX ID -
INPN ID 447660
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Morus paniculata Pipturus vaihirianensis Pipturus papuanus Pipturus incanus Pipturus acuminatus Pipturus candolleanus Perlarius argentus Perlarius incanus Boehmeria velutina Urtica albidopunctata Urtica incana Urtica pellucida Boehmeria candolleana Boehmeria incana Boehmeria propinqua Pipturus velutinus Pipturus argenteus Pipturus propinquus Urtica argentea Boehmeria cinerascens Boehmeria irritans Botrymorus paniculata

Lower taxons

Pipturus argenteus var. tuamotensis