Mass accretion rate as function of M_∗. Dots are class II objects with measured Ṁ_acc, the cross is a class III stars with measured Ṁ_acc, and diamonds refer to object with no Spitzer data. Arrows are objects with upper limits (both U-band detections and non-detections). Colors (only in the on-line version) indicate the SED Class : red for class II, blue for class III; black for objects with no Spitzer data. (A color version of this figure is available in the online journal.)