Greater Butterfly Orchid (Platanthera chlorantha)
Finding an orchid is always a bit of a thrill! They are apart from other flowers, they have that certain something extra. People will go miles to see a rare orchid just as others will to see a rare bird.
One of the biggest orchids you will find in Dorset is this one, the Greater Butterfly Orchid. Orchids are often named after something they resemble (bee, spider, frog, wasp, etc) but I find it hard to see a resemblance with a butterfly here. That said, it is a lovely flower.
Not common, the Greater Butterfly Orchid can be found in woodlands and grassland where the soil is calcareous so north Dorset is probably the most likely area. They may not be common but, if you find one, you will probably find several.