The common name is "Fox and cubs" and it's a noxious weed in some states in the US. I'll google for it's real name.

Latin name is Hieracium aurantiacum, or possibly a related species.
Also known as Orange Hawkweed, Pilosella aurantiaca, Tawny Hawkweed, Devil's Paintbrush, Grim-the-collier, Grimy Coalminer - it's a spready weed!

Agree with Beatie, i have known it has foxtails, funny i have took some pictures myself of this today of a huge drift of them, so beautifull, julien

Thanks Beatie, some interesting old names there, julien.

Thanks for all the answers, it sure is a spready weed, some time I must dig it out and re seed with grass seed, but it does look nice in the lawn. It´s strange how one plant..or weed in this case has so many names, I suppose it depends on where you live and what the local name for it is. I also have big clumps of daisys and buttercups in the lawn that I leave for the insects, it doesn´t realy look tidy, but I don´t want a perfect garden...just one that suits me.

Someone gave me a plant and I didnt realise that this came with it and has subsequently seeded all over the place. I'm on clay but it manages to seed around, just keep an eye on it as it is pretty invasive.

Why dig it out if you like it! My Mum used to grow it in the flower bed on purpose, but it did seem to encourage lots of little black flies. Maybe it would keep them off the broad beans and nasturtiums!