Triteleia grandiflora (Largeflower Triteleia) is a species of perennial herb in the family Asparagaceae. It has a self-supporting growth form. It is listed as endangered by COSEWIC. Largeflower Triteleia is native to Canada, the contiguous United States, the contiguous United States, and Canada. It has simple, broad leaves and blue flowers. Flowers are visited by Anise Swallowtail. Largeflower Triteleia is a photoautotroph. Individuals can grow to 0.61 m.
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