Fragrant Orchids, but which?

[JennyS]

Well, at least I'm sure these are orchids!

They were all photographed in The Burren, Co.Clare in early August this year and 1 and 2 were identified here as Marsh Fragrant Orchid, Gymnadenia densiflora.
Having just got 'Orchids of Britain and Ireland' I thought I'd be brave and try and figure out the others......
3. on similar, slightly damp ground, but seems to have deflexed linear sepals....
4. dryer ground, oval-lanceolate sepals - is this one Heath Fragrant Orchid, G.borealis?

[ladyhawk]

right jennys lets have a go /heath fragnant orchid, common and marsh
its a while since iv'e done this identity thing, beginning to enjoy myself, miss or hit

[ceterach]

Hi Jenny

Gonig from the flowers and the size of the spike I would say they are all G.densiflora. But I find separating them tough at times.

All the best