Lilyturf

Liriope muscari

''Liriope muscari'' is a species of low, herbaceous flowering plants from East Asia. Common names in English include big blue lilyturf, lilyturf, border grass, and monkey grass. It is a perennial with grass-like evergreen foliage and lilac-purple flowers which produce single-seeded berries on a spike in the fall. It is invasive to North America and considered a threat to native wildlife.
liriope  Liriope muscari,Liriope muscari (Lilyturf)

Uses

The roots, which often have fleshy tubers near their tip, are used in traditional Chinese medicine.

References:

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Taxonomy
KingdomPlantae
DivisionAngiosperms
ClassMonocots
OrderAsparagales
FamilyAsparagaceae
GenusLiriope
SpeciesL. muscari