Biology:Astelia graminea

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Short description: Species of flowering plant

Astelia graminea
A silver-grey grass in the middle of a field
Astelia graminea in Nelson Lakes National Park
Invalid status (NZ TCS)[1]
Scientific classification edit
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Order: Asparagales
Family: Asteliaceae
Genus: Astelia
Species:
A. graminea
Binomial name
Astelia graminea
L.B.Moore

Astelia graminea is a species of plant, endemic to New Zealand.[2]

Description

Astelia graminea looks rather like a grass without tufts, which makes it readily identifiable in the field.[3] Although astelia means 'stemless',[2] there is a stem to this plant, which is around 1cm in diameter.[4] From this stem long, grass-like leaves with a deep keel spread out evenly. The leaves are brown on one side, and then buff and felted on the other side.[4]

The flowers are green, red, or pink.[2] They bloom in January, and the orange fruit[4] is present from March to April.[4] The plant is perennial.[5]

The key used to distinguish this species in the original description is as follows:[3]

Leaf lamina narrow, mostly ± 1 cm wide, dull brown adaxially, nerves on each side of midrib usually <6; habit diffuse and grasslike owing to lateral shoots developing in axils of many leaves; panicle simple, each spathe subtending only 1 raceme; fruit nearly twice as long as broad.

Range and habitat

Astelia graminea is known from the northern part of the South Island.[6] It is known only from Nelson and west Marlborough,[7] from the Wairau Mountains to Gouland Downs.[3] This species is currently not considered threatened.[1]

Ecology

The seeds in the berries are scattered through frugivory.[2] Honey bees and flies are known to visit the flowers.[7]

It collocates with Chionocloa australis in open grasslands at altitude.[7] It collocates with Astelia nivicola near Lake Adelaide, and near Mt. Arthur.[3]

Etymology

Graminea means 'grassy' in Latin. Astelia means 'stemless'.[2]

Taxonomy

It may hybridize with Astelia banksii and Astelia solandri in the wild.[7]

The type locality is from the Travers Range in Nelson.[7]

References

Wikidata ☰ Q15501838 entry