Horsfieldia australiana S.T.Blake

Species

Angiosperms > Magnoliales > Myristicaceae > Horsfieldia

Characteristics

A tree. It grows 10-120 m high and spreads 3-6 m wide. It has a dense spreading crown. The bark is slightly rough and cream and blotchy. It flakes and has fine cracks along it. The stem has a distinct ridge which zigzags from leaf to leaf. The leaves are simple, alternate and smooth and leathery or papery. They are oblong and 16-28 cm long by 4.5-7 cm wide. They are shiny dark green on top and paler underneath. The tip of the leaf is rounded or slightly pointed. There are 12-15 pairs of side veins. The leaf stalk is thick and curved. It is about 1 cm long. Male and female flowers occur on separate trees. The flowers are very small and orange-yellow. Male flowers have a spicy scent and are 0.2 cm across. They occur in dense clusters in the axils of leaves. The female flowers are nearly round and in flower clusters 1.5-2.5 cm long. The fruit are smooth and oblong. They are 4 cm long by 2.5 cm across. They hang in clusters along the stalk. They are pale yellow when ripe. The fruit stalk is very short. Inside is one seed covered by a fleshy orange-red aril. The seed is 1.5 cm long.
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Tree to 25 m high. Leaf bud 8–15 mm long, stellate-puberulous. Leaves: petiole 3–7 mm long; lamina elliptic or oblong, 10–24 cm long, 3–7 cm wide, acute or decurrent at base, obtuse or acute apically with a blunt tip, glabrescent or glabrous; secondary veins 10–17 pairs. Inflorescence to 8 cm long, stellate-puberulous; bracts 2–6 mm long, caducous. Flowers in loose clusters of 2–6 in males, 1–3 in females; buds ellipsoidal or subglobose, 2.5–3 mm long; pedicel 1–2 mm long; calyx 2-cleft in apical half. Male flowers: androecium broadly obovoid or ellipsoidal, laterally compressed, 1.8–2 mm long, 1.5–2 mm wide; apex hollow with protruding central column; anthers 12–14, slightly incurved; androphore 0.1–0.2 mm long. Female flowers: ovary ovoid, 2 mm long, tomentulose at base. Fruit ellipsoidal, granulate, 1.8–2.2 cm long (spirit preserved 3.7 cm), 1.1–1.4 cm wide (spirit preserved 2.7 cm); pericarp c. 2 mm thick (spirit preserved 5 mm).
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Growth form tree
Growth support free-standing
Foliage retention evergreen
Sexuality dioecy
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Mature width (meter) 3.0 - 6.0
Mature height (meter) 10.0 - 25.0
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Environment

A tropical plant. It grows naturally in thick monsoon forest near freshwater streams. It is often on moist organic soils in sandstone country. They need deep, well drained soils. It requires ample moisture. In tropical Queensland it grows from sea level to 450 m altitude. In Townsville palmetum.
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Dense monsoon forest near freshwater streams. It is often found on moist organic soils in sandstone country.
Grows in evergreen and semi-deciduous mesophyll and notophyll vine forest.
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Hardiness (USDA) 8-12

Usage

The kernel of the fruit is eaten raw.
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Edible fruits nuts seeds
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Cultivation

Plants can be grown from seed. The seed should be sown fresh.
Mode seedlings
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Distribution

Horsfieldia australiana world distribution map, present in Australia

Conservation status

Horsfieldia australiana threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:585699-1
WFO ID wfo-0000724816
COL ID 3MQ9V
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Horsfieldia australiana