Meadow Fescue 
A common Perennial grass, with the scientific name of Schedonorus pratensis (previously called Festuca pratensis). The leaf is Flat or rolled, having a typical width of 3-8mm. The Ligule is Membranous, being 1mm in length; Auricle?: Yes. Growth type is Tufted.
Meadow Foxtail
A common Perennial grass, with the scientific name of Alopecurus pratensis. The leaf is Flat or rolled, having a typical width of 3-10mm. The Ligule is Membranous, being 1-2.5mm in length; Auricle?: No. Growth type is Tufted.
Meadow Grass
This is typically a reference to Annual Meadow Grass, but without clarification it could also mean other grasses found in turfgrass situations: Prostrate (Creeping) Meadow Grass, Smooth Stalked Meadow Grass, or Rough Stalked Meadow Grass.
Meadow Oat Grass
A common Perennial grass, with the scientific name of Helictotrichon pratense. The leaf is Flat or rolled, having a typical width of 1-5mm. The Ligule is Membranous, being 2-5mm in length; Auricle?: No. Growth type is Tufted.
Mediterranean Rye-Grass
A rare Annual grass, with the scientific name of Lolium rigidum. The leaf is Flat or rolled, having a typical width of 2-8mm. The Ligule is Membranous, being 0.5-1.5mm in length; Auricle?: Yes. Growth type is Tufted.
Milium
The genus name for range of grasses (2 species) called Millet.
Milium effusum, Wood millet.
Milium vernale, Early millet.
Molinia caerulea
The scientific name for Purple moor-grass.
Mountain Melick
An uncommon Perennial grass, with the scientific name of Melica nutans. The leaf is Flat or rolled, having a typical width of 2-6mm. The Ligule is Membranous, being 0.5mm in length; Auricle?: No. Growth type is Rhizomatous.
Nardurus maritimus
The scientific name for Matgrass fescue.
Nardus stricta