Llun: 1
River Rhymney by Eastern Avenue and Link Road. Emergent water plants

November flowering Tripleaurospermum maritimum by River Rhymney. In 6inch water. Turf towards Link Road, 1982
Enw rhywogaeth Mary: Tripleurospermum maritimum
Enw gwyddonol: Tripleurospermum maritimum
Enw cyffredin: Sea Mayweed

Dyddiad: 1982

Llun: 2

Spartina invading Puccinellia, Severnside, Monmouthshire. 1972
Enw rhywogaeth Mary: Spartina
Enw gwyddonol: Spartina

Dyddiad: 1972