Ranunculus lyallii

Ranunculus lyallii
Scientific classification
Kingdom:	Plantae
Division:	Magnoliophyta
Class:	Magnoliopsida
Order:	Ranunculales
Family:	Ranunculaceae
Genus:	Ranunculus
Species:	R. lyalii
Binomial name
Ranunculus lyallii Hook.f.

Ranunculus lyallii (Mountain buttercup, Mount Cook buttercup, or , although not a lily, Mount Cook lily), is a species of Ranunculus (buttercup), endemic to New Zealand, where it occurs in the South Island and on Stewart Island at altitudes of 700–1,500 m.^[1][2]

It is a herbaceous perennial plant growing to 60–100 cm tall (the largest species of buttercup), with a stout rhizome. The leaves are glossy dark green, peltate, 15–40 cm diameter. The flowers are 5–8 cm diameter, with 10–20 white petals and numerous yellow stamens; flowering is from late spring to early summer.^[1][2]

Notable sites for the species include Mount Cook National Park^[3] and in other alpine areas of including the area around Arthur's Pass.

The flower (termed Mount Cook lily in this usage) was the logo of Mount Cook Airline until replaced by Air New Zealand's koru symbol. Other companies connected with the airline used the same logo until the Mount Cook Group was disbanded in 1989^[4].

References

1. ^ ^{a b} Ranunculaceae Society: Ranunculus lyallii
2. ^ ^{a b} Alpine Plants of New Zealand: Ranunculus lyallii
3. ^ Virtual New Zealand: photos
4. ^ John McCrystal On the Buses in New Zealand: from charabancs to the coaches of today, Grantham House, Wellington, 2007

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  Foliage

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  Plants growing in arctic-alpine scrub