Dolichoglottis lyallii, the yellow snow margueritte, is a species of flowering plant, endemic to New Zealand.

Description Dolichoglottis lyallii has yellow ligules, up to long, and the capitulum (or flower head) appears entirely yellow. It is a tall flower, growing up to . The leaves are long and grass-like.

Dolichoglottis lyallii is a rhizomatous geophyte, and a perennial plant.

Distribution and habitat Dolichoglottis lyallii is native to the South Island and Stewart Island.

Etymology The specific epithet, lyallii is named for David Lyall.

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