Kikuyu Grass 
A warm season species of grass. Its scientific name is Pennisetum clandestinum.
Knitting-In
The action of ensuring laid turves are well fixed together without any noticeable gap at the joins. The application of a topdressing helps turf knit in to form a uniform, gap-free surface.
Koeleria
The genus name for range of grasses (2 species) called Hair-grass.
Koeleria macrantha, Crested hair-grass.
Koeleria vallesiana, Somerset hair-grass.
Lagurus ovatus
The scientific name for the grass Hare's-tail.
Leersia oryzoides
The scientific name for the grass Cut-grass.
Lemma
A pair of scales which enclose the inner scales called Palea and the grass flower. The lemma has also been called outer palea or lower palea.
Lesser Canary-grass
An uncommon Annual grass, with the scientific name of Phalaris minor. The leaf is Flat or rolled, having a typical width of 4-12mm. The Ligule is Membranous, being 3-6.5mm in length; Auricle?: No. Growth type is Tufted.
Lesser Hairy-Brome
A rare Perennial grass, with the scientific name of Bromus ramosus ssp benekenii. The leaf is Flat or rolled, having a typical width of 4-12mm. The Ligule is Membranous, being 1-3mm in length; Auricle?: Yes. Growth type is Tufted.
Lesser Quaking-Grass
A rare Annual grass, with the scientific name of Briza minor. The leaf is Flat or rolled, having a typical width of 3-9mm. The Ligule is Membranous, being 3-6mm in length; Auricle?: No. Growth type is Tufted.
Leymus arenarius