Sesleria autumnalis

Sesleria autumnalis, commonly known as autumn moor grass, is a species of grass within the family Poaceae. It is native to southeastern Europe and often used as ornamental ground cover in North America.
Taxonomy.
The first recorded description of the species is attributed to Giovanni Antonio Scopoli, who referred to it as "Phleum autumnale" in the second edition of his book, "Flora Carniolica", which was published in 1771. Friedrich Wilhelm Schultz gave the species its current name, "Sesleria autumnalis" in his book "Archives de Flore". 
The species has been referred to by several heterotypic synonyms, including: "Sesleria elongata", "Aira alba", and "Sesleria argentea var. elongata". 
Description.
"Sesleria autumnalis" is a perennial. Its blades are phyllotactic and overhanging, with v-shaped cross sections. In the autumn it changes in color, from light-green to a yellowish brown. It flowers in late summer, when spikelets grow in groups of three on the end of leafless stems.
Distribution and habitat.
In its natural habitat, "S. autumnalis" is often found in wooded regions and grassy or sparsely covered areas. The species is common in the Balkan Peninsula and on the calcite mountains of the eastern Alps.
Cultivation.
"Sesleria autumnalis" is cultivated as an ornamental plant. It has received the Royal Horticultural Society's Award of Garden Merit. 