Cyathea dealbata (G.Forst.) Sw.

Species

Pteridophytes > Cyatheales > Cyatheaceae > Cyathea

Characteristics

Caudex up to 10 m. tall with basal diam. 45 cm., us. smaller; bases of stipites long-persistent. Stipes rather stout, ± 4 cm. diam. near base; paleae shining dark brown, c. 5 cm. long; hairs yellow-brown, cop., deciduous. Lamina up to 3 × 1 m. or more, 2-3-pinnate; subcoriac., attenuate; dark green above. Juvenile plants with lamina pale green below; subsequent fronds becoming patched with white to glaucous bloom below; adult plants with lamina almost completely white or glaucous below. Primary pinnae 30-50 cm. long, oblong-acuminate; secondary up to 10 cm. or more, oblong-lanceolate, attenuate. Tertiary pinnae or segs up to 15 mm. long, subfalcate, subacute to acute, crenate-serrate in upper half, margins slightly recurved, veinlets free. Sori us. cop., globose, c. 1 mm. diam. (may be present on only partly dealbate fronds). Indusium thin, at first covering sorus, persisting as a shallow cup.
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A large tree fern. It has an erect trunk. It can be 10 m tall. Occasionally it has a creeping form. The fronds are about 4 m long. Underneath the fronds is white. The fronds are divided 3 times. The stalk is pale brown with a silver blush. It can be glossy and twisted. The bases of the stalks remain sticking out from the trunk.
Life form -
Growth form tree
Growth support -
Foliage retention evergreen
Sexuality -
Pollination -
Spread -
Mature width (meter) 2.0
Mature height (meter) 9.0 - 9.5
Root system -
Rooting depth (meter) -
Root diameter (meter) 0.6
Flower color -
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

It does best in a sheltered position. It is damaged by hot sunlight. It grows naturally in dry open forest. It grows well in well-drained humus. It can stand some frost. It suits hardiness zones 9-11. Geelong Botanical Gardens.
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Lowland to montane forests and shrubland on North, South and Chatham Islands.
Light 3-6
Soil humidity 5-8
Soil texture 2-5
Soil acidity 3-7
Soil nutriment -
Hardiness (USDA) 9-10

Usage

The pith is eaten.
Uses medicinal
Edible fronds leaves roots stems
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Plants can be grown by spores.
Mode -
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -7
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Cyathea dealbata unspecified picture

Distribution

Cyathea dealbata world distribution map, present in New Zealand

Identifiers

LSID urn:lsid:ipni.org:names:17072400-1
WFO ID wfo-0000139888
COL ID -
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Cyathea tricolor Polypodium dealbatum Alsophila tricolor Cyathea falciloba Hemitelia falciloba Cyathea dealbata