Quite minty looking.
Regards,
Arif.

Have you got a closer shot of the leaves Arif?

Janet this thing did not have all that many leaves to start with just one stalk with flower and maybe two or three leaves. I have cropped the picture, in it you will see a few mint type leaves which belong to it.
Regards,
Arif.

Thanks Arif, I have cropped your cropped photo even more, altered the lighting and blew it up to a bigger size. I think the tall stems with triangular shaped leaves which are cut at the end is the plant we are looking at and if most likely in the family Apiaceae.

http://www.google.co.uk/search...

http://www.tropicos.org/Name/4...
http://www.tropicos.org/Name/4...
http://www.tropicos.org/Name/4...
Cannot find Petroselinum even though I like the leaf structure but found Apium.
http://www.tropicos.org/Name/4...
http://www.tropicos.org/Name/4...
Even though we have this Genus but Tropicos is silent. Some day I will post http://en.wikipedia.org/wiki/E... unless there is a name change involved. Sea Holly .
http://www.tropicos.org/Name/4...
http://www.tropicos.org/Name/4...
Pastinaca I cannot find unless again a name change has occurred.
http://en.wikipedia.org/wiki/L...
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Above is my rough work. Janet can we narrow it down a bit?
Regards,
Arif.

I used the key for Umbelliferae on Flora Pakistan, got to #11 where you need to see the fruits for both options. So I started to go through the Genera from there, got to Pleurospermum and found one in a google with similar leaves so the species you have could be checked out, if none fit then try the other genera below #11.

http://botany.cz/cs/pleurosper...

http://www.efloras.org/florata...

http://www.efloras.org/florata...