Llun: 1
Severn, spartina advance

Caldicot Pill, strong tide swirling round Spartina caused depression instead of usall silt mounds February 1971
Enw rhywogaeth Mary: Spartina
Enw gwyddonol: Spartina

Dyddiad: February 1971

Llun: 2
Severn Habitat range historic. Barges, putchers

Caldicot Pill. 2 levels of salt marsh sloping back like coral reef. Mostly Festuca rubra H20 salt or fresh February 1971
Enw rhywogaeth Mary: Festuca rubra
Enw gwyddonol: Festuca rubra
Enw cyffredin: Red Fescue

Dyddiad: February 1971

Llun: 3
Reens, Canals, Pills, Grips

Caldicot Levels under Severn Bridge. Decrepid hawthorn hedge on Fresh water sheeps moors
Enw rhywogaeth Mary: Hawthorn
Enw gwyddonol: Crataegus monogyna
Enw cyffredin: Hawthorn

Dyddiad: 20/02/1971