Wood millet

Milium effusum
Scientific classification
Kingdom:	Plantae
(unranked):	Angiosperms
(unranked):	Monocots
(unranked):	Commelinids
Order:	Poales
Family:	Poaceae
Genus:	Milium
Species:	M. effusum
Binomial name
Milium effusum L.
Synonyms
List Agrostis effusa Lam. Alopecurus effusus Link ex Kunth nom. inval. Decandolia effusa (Lam.) T.Bastard Melica effusa (L.) Salisb. Miliarium effusum (L.) Moench Milium adscendens Roxb. nom. inval. Milium confertum L. Milium dubium Jacquem. ex Hook.f. nom. inval. Milium nepalense Nees nom. inval. Milium transsilvanicum Schur Milium willdenowii Lojac. Paspalum effusum (L.) Raspail

Milium effusum (vernacular name American milletgrass or wood millet) is a perennial species of grass in the Poaceae family, native to damp forests of the Holarctic Kingdom.

Damp, deciduous woods and shaded banks, where it grows on winter-wet, calcareous to mildly acidic clay and loam soils, and also over rocks in W. Scotland.

It can be found in northern United States and Canada. and Europe, including Britain but excluding the Mediterranean, east to Siberia and the Himalayas.

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Wikipedia