onion grass

noun3

1. •
   (US) Species of Melica, especially Melica bulbosa and Melica subulata.
2. •
   (Australia) Any of several species of non-native grasses of the genus Romulea, including Romulea rosea.

   • Peter Latz […] described the technique of women harvesting the tubers of onion grass […]. — 2018
3. •
   Wild or feral chives, garlic, or other species with grass-like leaves in the genus Allium, particularly Allium vineale, a wild herb native to Europe and western Asia, naturalised elsewhere; a common lawn weed.