This was growing under a eucalypt canopy in a suburban park (with oak trees elsewhere in the park). In the Photo 2 you see that in this species there is a colour change to blue when I drag a fingernail across the yellow pore surface - and notice also a second, very small fruitbody at the base of the stem of the mature one. In Photo 3 you see that there is the same blue colour change when the internal flesh is exposed to the air. The flesh is initially pale yellow and the blue colour fades away after a little while. I checked the genus under the microscope.