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Ptisana oreades (Domin) Murdock

Species

Pteridophytes > Marattiales > Marattiaceae > Ptisana

Characteristics

A large ground fern. It grows 1-4 m high. The rootstock is short and creeping and large and fleshy with large roots. The leaf stalk is 50-150 cm long and erect and fleshy. The base is swollen and there are 2 ear like growths. The fronds are 1-4 m long. They are divided 1-3 times into leaflets along the stalk. The leaflets are jointed. They are 8-22 cm long by 2.5-3.5 cm wide. They are oblong or sword shaped. They are dark and shiny green above and paler underneath. There are coarse teeth along the edge. It tapers towards the tip. The spore bodies are in oblong clusters.
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Fronds to 4 m long, arching. Stipe to 75 cm long, up to two-thirds of leaf length, scabrid due to scale bases. Lamina 2-pinnate, to 1.5 m long and 1 m wide. Pinnae obovate, opposite to subopposite, up to 6 pairs, to 85 cm long and 45 cm wide. Pinnules linear-lanceolate, opposite to alternate, up to 31 pairs, to 25 cm long and 4.5 cm wide; base unequal to cuneate; margins serrulate; apex acuminate to aristate, toothed. Sori submarginal, with up to 10 compartments per synangial valve.
Life form perennial
Growth form herb
Growth support -
Foliage retention evergreen
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Mature height (meter) 1.0 - 4.0
Root system creeping-root
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Environment

It grows along stream banks in the rainforest. It will grow in cool tropical, subtropical and temperate climates. It needs shade and a well drained soil. It can tolerate light frosts.
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Grows on river banks and gullies in rainforest, to 1200 m altitude.
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Usage

The starchy rootstock can be eaten.
Uses -
Edible roots
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

It can be grown from the ear like lobes at the base of the fronds. These need to be kept moist and take 12 months to develop new plants.
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Distribution

Ptisana oreades world distribution map, present in Australia

Identifiers

LSID urn:lsid:ipni.org:names:77091908-1
WFO ID wfo-0001032954
COL ID 4Q8W2
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Marattia oreades Ptisana oreades
WorldFloraDB 2024