Bearded Fescue 
A rare Annual grass, with the scientific name of Vulpia ciliata. The leaf is Flat or rolled, having a typical width of 2mm. The Ligule is Membranous, being 0.5mm in length; Auricle?: No. Growth type is Tufted.
Bermuda Grass
A warm season species of grass. There are three main turfgrass species: Common Bermuda Grass, (Cynodon dactylon); African Bermuda Grass, (Cynodon transvaalensis); and a hybrid Bermuda Grass of Cynodon dactylon x Cynodon transvaalensis. Bermuda grass (Cynodon dactylon) is a rare Perennial grass in the UK. The leaf is Flat or rolled, having a typical width of 2-4mm. The Ligule is a Fringe of hairs, being 1mm in length; Auricle?: No. Growth type is Stoloniferous and Rhizomatous.
Black Bent
A common Perennial grass, with the scientific name of Agrostis gigantea. The leaf is Flat or rolled, having a typical width of 2-8mm. The Ligule is Membranous, being 1.5-6mm in length; Auricle?: No. Growth type is Rhizomatous.
Black-Grass
A common Annual grass, with the scientific name of Alopecurus myosuroides. The leaf is Flat or rolled, having a typical width of 2-8mm. The Ligule is Membranous, being 2-5mm in length; Auricle?: No. Growth type is Tufted.
Bloomed Fescue
A common Perennial grass, with the scientific name of Festuca rubra ssp pruinosa. The leaf is Bristle, having a typical width of 0.6-1.3mm. The Ligule is Membranous, being 0.5mm in length; Auricle?: No. Growth type is Rhizomatous. This is also known as a subspecies of Slender Creeping Red Fescue and grows in coastal sandy and free draining situations. The minimum effective cutting height for this species is 5mm.
Blue Fescue
A rare Perennial grass, with the scientific name of Festuca longifolia; this was formerly the scientific name for Hard Fescue. The leaf is Bristle, having a typical width of 0.5-1mm. The Ligule is Membranous, being 0.3mm in length; Auricle?: No. Growth type is Tufted.
Blue Moor Grass
An uncommon Perennial grass, with the scientific name of Sesleria caerulea. 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.
Bog Hair-Grass
An uncommon Perennial grass, with the scientific name of Deschampsia setacea. The leaf is Bristle, having a typical width of 0.2-0.4mm. The Ligule is Membranous, being 2-8mm in length; Auricle?: No. Growth type is Tufted.
Borrer's Saltmarsh grass
An uncommon Perennial grass, with the scientific name of Puccinellia fasciculata. The leaf is Flat or rolled, having a typical width of 1.5-5mm. The Ligule is Membranous, being 1-2.5mm in length; Auricle?: No. Growth type is Tufted.
Brachypodium pinnatum