The pore surface does not stain when it is bruised.

The pore surface is initially white before turning pinkish in age.

The color of the pore surface is bright yellow to start, but eventually darkens somewhat, and will stain blue with damage.

When bruised, the pore surface initially stains reddish and slowly turns black.

Its pore surface is white but easily turns shades of brown upon damage.

Its color is initially deep red, but fades slightly in maturity; the pore surface quickly turns blue with injury.

When the flesh is exposed it also turns a dark blue, but less dramatically than the pore surface.

Young, fresh specimens sometimes bear droplets of a clear fluid that collect on the pore surface.

Members of the genus are distinguished by their pinkish pore surfaces.

The pore surface on the underside of the cap is initially white before turning reddish-brown in age.