I couldn't find any
Marsh Helleborines (
Epipactis palustris) at Holme, but that didn't matter because inland at the NWT's Narborough Railway Line reserve, half a dozen plants were growing in what looked to be bone-dry conditions

It's obviously a known site, though, because there's a photo of them in my Flora of Norfolk book

(
Marsh Helleborine, Epipactis palustris)
The boggy reserves in the area weren't as productive as I'd hoped, but I did manage to find
Cranberry (
Vaccinium oxycoccos) at Dersingham &
Lesser Marshwort (
Apium inundatum) at Roydon Common. Sorry, the latter isn't a great photo; it's a very low-growing plant and at the time, my back was playing up a bit

(
Cranberry, Vaccinium oxycoccos)

(
Lesser Marshwort, Apium inundatum)
Oh - and a plant of
Memorial Rose (
Rosa luciae) that had scrambled a good forty feet up a tree on the common

(
Memorial Rose, Rosa luciae)
And then, a moment that proves you really can find good plants anywhere. By the side of the A149 main coast road, topsoil had clearly been used to resurface a verge and, as a result, an extraordinary range of "casuals" had sprung up!
Larkspur (
Consolida ajacis),
Garden Orache (
Atriplex hortensis),
Small Balsam (
Impatiens parviflora) &
Corn Marigold (
Chrysanthemum segetum) were all new, whilst other goodies here included
Annual Toadflax (
Linaria maroccana) &
Small Toadflax (
Chaenorrhinum minus)

(
Larkspur, Consolida ajacis)

(
Garden Orache, Atriplex hortensis)

(
Corn Marigold, Chrysanthemum segetum)