Full Idea
Many actual regularities are not laws (accidental regularities), and many perceived regularities are not actual ones (a summer's worth of observing green leaves).
Gist of Idea
Accidental regularities are not laws, and an apparent regularity may not be actual
Source
Alexander Bird (Philosophy of Science [1998], Ch.8)
Book Reference
Bird,Alexander: 'Philosophy of Science' [UCL Press 2000], p.239
A Reaction
These problems are not sufficient to refute the regularity view of laws. Accidental regularities can only be short-lived, and perceived regularities support laws without clinching them. There is an awful lot of regularity behind laws concerning gravity.