Nigel Cattlin / Perennial ryegrass (Lolium perenne), close up of flowering spike with awned spikelets.

Gerrit Vyn / Road running through the sagebush steppe land in the Ryegrass BLM (Bureau of Land Management) area towards the Wyoming Mountain Range. Sublette County, Wyoming, USA. July.

Nigel Cattlin / Ergot (Claviceps purpurea) sclerotium, ergots, replacing the seed in a ryegrass (Lolium sp.) grass seedhead

Nigel Cattlin / Oat sterile dwarf virus (OSDv) disease causing stunting of Ryegrass (Lolium sp).

Nigel Cattlin / Ford tractor with Vicon Olympus mower mowing lush ryegrass ley in rows to forage for silage, Berkshire, England, UK.

Nigel Cattlin / Frit fly (Oscinella frit) grassland, ley grass pest, 'dead-heart' damage to ryegrass (Loium spp.) plant

Nigel Cattlin / Leaf blotch (Rhynchosporium secalis) fungal disease lesions on ryegrass (Lolium perenne) leaves