If you look up the definition of clan at dictionary.com it says in part "a group of people, as a clique, set, society, or party, esp. as united by some common trait, characteristic, or interest: a clan of actors and directors.". If that does not describe this extended social group then nothing does.
Another reason the dandelion is a good choice is that they are very hard to get rid of once established and the make my grandmother used to make a tasty wine out of them.