Which is a type of grass, Pleurothallis or Lamarckia?
Lamarckia Lamarckia is a Eurasian and African plant in the grass family.
Poa arida Poa arida is a species of grass known by the common names plains bluegrass and prairie speargrass. It is native to North America, where it occurs throughout western and central Canada and the central United States. It is most common east of the Continental Divide; specimens west are often misidentifications.