Possibly worked from a set of iron-on transfers onto green linen with machine stitched hems (likely completed by stitcher).
The design on 2 smaller mats is the same as on main larger one (from middle section). Jacobean style design predominantly in stem stitch & satin stitch with some buttonhole (for linear), chain stitching (linear & leaves) & cross-stitch used to secure lines of laid threads (partial flowers).
Multi colours using stranded cotton, 3 strands.
Larger mat size 7” width x 19.25” length (18cm x 48.5cm) - smaller mat size 4.75” width x 8.75” length (12cm x 22cm)
(Likely to be made for a dressing table)