Kōrero: Liverworts and hornworts

Often overlooked or mistaken for mosses, liverworts and hornworts grow from New Zealand’s coasts to alpine zones, but most luxuriantly in rainforest. If you take a closer look, you’ll find an intriguing world of shapes and colours.

He kōrero nā Maggy Wassilieff
Te āhua nui: Splash cups on a liverwort

He korero whakarapopoto

Ngā whakaahua me ngā rauemi katoa o tēnei kōrero

Large numbers of liverworts and hornworts grow in New Zealand, mostly in damp forests. They form spongy green mats on the forest floor, rocks and trees. People often think they are mosses, because the three types of plant look similar.

Life cycle of liverworts and hornworts

The green parent plant releases sex cells (eggs and sperm). When an egg and a sperm join together within the plant, a spore capsule sprouts on a stalk. This stays attached to the parent plant and depends on it for nutrients. Spores escape from the capsule, germinate, and grow into a new generation of plants that produce sex cells.


New Zealand has more than 500 species of liverwort.

They can be grouped into two main types:

  • Leafy liverworts. They vary widely. Some have hairy leaves that trap water and delay drying out. Others have water sacs, which contain bacteria and tiny, swimming animals.
  • Thalloid liverworts. These have no leaves. Complex thalloid liverworts are thick sheets of cells, with internal air spaces and pores (tiny holes) to the outside. Simple thalloid liverworts are thin sheets of cells, with no pores.


Their name comes from the horn-like shape of their spore capsules, where they make and store their spores. There are 13 species in New Zealand.

Hornworts grow as a flat green mass on soil or rocks.

Me pēnei te tohu i te whārangi:

Maggy Wassilieff, 'Liverworts and hornworts', Te Ara - the Encyclopedia of New Zealand, http://www.TeAra.govt.nz/mi/liverworts-and-hornworts (accessed 12 April 2024)

He kōrero nā Maggy Wassilieff, i tāngia i te 24 o Hepetema 2007