Hainardia is a genus of coastal plants in the grass family, native to the Mediterranean Basin.
The only known species is Hainardia cylindrica, known by several common names, including barbgrass, one-glumed hard-grass, and thintail. It is native to the Mediterranean and to nearby regions from Madeira and the Canary Islands east to Crimea and Iran. It is also reportedly naturalized in coastal regions in scattered locales in Australia, New Zealand, the United States (CA OR TX LA SC), Baja California, and temperate South America (Brazil, Uruguay, Argentina, Chile).
This plant might be poisonous
How to get rid of:
It is often more effective with tall herbaceous plants, such as
grasses, and some woody weeds to first slash the area and only
spray the re-growth. Allow 3–4 weeks for new lush growth and
then spray. Most chemicals works best when plants are healthy
and actively growing. By removing dry stems and forcing the plant
to put on new growth the uptake of herbicide will be improved.
This method has the added benefit of opening up the space and
improving access, and can result in less herbicide being used.