Curcuma australasica Hook.F.

Species

Angiosperms > Zingiberales > Zingiberaceae > Curcuma

Characteristics

An evergreen ginger family herb. It re-grows each year from the underground fleshy rootstock. It grows to 0.5 m tall and spreads to 0.5 m wide. The stems are erect and flowering. The leaves are light green and large and like a spade. They are 25-70 cm long by 9-15 cm wide. They point upwards and are pleated and narrow towards the base. The leaves are thin textured. The stalk is fleshy and 20 cm long. The flowers are yellow with large bright pink bracts. They occur in clusters of 3-5 in the base of each bract. The lower flowers are green and fertile while the upper ones are pink and sterile. These flowers are in spikes 12-15 cm long. The fruit is a thin walled 3 celled capsule. The seeds are enclosed in papery bracts.
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Rhizome not elongating, yellow within. Leaves tufted; lamina ovate-lanceolate, acuminate, rounded at base, glabrous, to 45 cm long and 19 cm wide; petiole to 15 cm long. Inflorescence terminal, cylindrical, to 15 cm long, 3 cm wide; fertile bracts oblong, acute, recurved at tips, 1.5–2.5 cm long, green, each subtending a cincinnus of up to 5 flowers; sterile bracts longer, flushed rose. Flowers pale yellow, exserted from bracts; dorsal lobe of corolla broadly concave, 1.5–2 cm long. Lateral staminodes 1 cm long, not folded behind stamen. Labellum c. 1.5 cm long, ± orbicular, emarginate. Anther spurred at base.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention evergreen
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) 0.5
Mature height (meter) 0.5
Root system rhizome
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

A tropical plant. It prefers well drained soil in a protected heavily shaded position. They can grow in the sun. It needs a wet summer and a dry winter. It is drought and frost tender. It grows naturally in sandstone country on the fringe of monsoon forests near streams. It needs an alkaline pH. In the Cairns Botanical Gardens. It suits hardiness zones 8-12. Coffs Harbour Botanical Gardens.
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Edges of rainforest, in Eucalypt forest, vine forest and in woodland at elevations up to 550 metres in Queensland.
Grows in shady rainforest margins, often on rocky terrain.
Light 4-6
Soil humidity 5-7
Soil texture 3-4
Soil acidity -
Soil nutriment -
Hardiness (USDA) 8-12

Usage

Sometimes grown as an ornamental and for its flowers.
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The roots are roasted and eaten.
Uses medicinal ornamental social use
Edible rhizomes roots tubers
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Plants are grown by division of the clump. They can also be grown from seed.
Mode seedlings
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Curcuma australasica unspecified picture

Distribution

Curcuma australasica world distribution map, present in Australia, Moldova (Republic of), and United States of America

Conservation status

Curcuma australasica threat status: Least Concern

Identifiers

LSID -
WFO ID wfo-0000365448
COL ID 6C2SX
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Curcuma australasica