It could be the angle that the picture was taken but the umbels look nothing like any HWD I've ever seen.. Are they fully mature?
........without purple splotched stems ?
https://foragekent.files.wordpress.com/2014/04/p1030007.jpg
and it doesn't have those green bracts in amongst the flower head that show in op post.
http://www.google.co.uk/search?q=he...m%2Fmay%2Fhemlock-water-dropwort.html;310;275
M
So, HWD, doesn't need to have the purple splotches, and it can have long bracts ?
M
Water hemlock leaves terminate in v notches, and it too has purple on it's stems.
Which hemlock do you mean ? there are four.
Tsuga, a genus of coniferous trees
Conium, two species,
Cicuta (water hemlock)
Oenanthe crocata (water dropwort)
I'm presuming you don't mean the tree
It's not me quibbling Mike, it's me asking for real clarity.
cheers,
M
I'm tentatively saying fool's parsley Aethusa cynapium. Pictures show bracteoles that can be quite variable in size and quantity. I can't find any illustrations of HWD with bracteoles.
http://www.naturespot.org.uk/species/fools-parsley