unusual shrub bark

During a walk on the Forbidden Trail in the Wissahicokon park in Philidelphia yesterday I observed a shrub with an unusal bark with  which I  wasn't familar.  The shrub had growth pattern similar to a honeysuckle but with a bark on the upper stems & twigs (but not the lower stems) consisting of a round cylinder with four blade like bark surfaces  (fins) projecting out from the cylinder.  The cross section would look like a four pointed star.   These blades or fins were about a 3/8's to 1/2 inch wide and run two or three inchs then interrupted by the nodes from which the twigs project.  Opposite character I believe.

 Is any one familar with this shrub?