I think you can see a common dandelion (Taraxacum officinale) on the photo. This beautiful yellow flower is very common here in Germany and you can find them everywhere and it´s a wildflower that you can find everywhere in the green grass and even between the street curbs. They are so prevalent that some even think that it is weed. The first thing you will notice on the grass is either a common dandelion or millions of daisies but I guess you can find them in a lot of places of the earth? I like both flower types as they are very beautiful.
By the way. In germany we call the common dandelion also “Löwenzahn” and you could translate it like “Lions Tooth”. But I am not sure where name comes from. I am not flower expert and I would need to research too. Anyway, I am more interested in the appearance of the flowers. I think flowers are so interesting as there are so many different ones with different appearances. They are simply beautiful.