The orange-brown, to brown-yellow cap is viscid (sticky) when wet, and shiny when dry, and is usually 3 to 9 cm in diameter.
The stem is pale yellow, of uniform thickness, with tiny brownish granules at the apex.
It is without a ring.
The tubes and pores are small, pale yellow, and exude pale milky droplets when young.
The flesh is also pale yellow.

Suillus granulatus is often confused with Suillus luteus, which is another common and widely distributed species occurring in the same habitat.
S. luteus has conspicuous a partial veil and ring, and lacks the milky droplets on the pores.
 
Also similar is Suillus brevipes, which has a short stipe in relation to the cap, and which does not ooze droplets from the pore surface.
The orange-brown, to brown-yellow cap is viscid (sticky) when wet, and shiny when dry, and is usually 3 to 9 cm in diameter. The stem is pale yellow, of uniform thickness, with tiny brownish granules at the apex. It is without a ring. The tubes and pores are small, pale yellow, and exude pale milky droplets when young. The flesh is also pale yellow.
Suillus granulatus is often confused with Suillus luteus, which is another common and widely distributed species occurring in the same habitat. S. luteus has conspicuous a partial veil and ring, and lacks the milky droplets on the pores.  
Also similar is Suillus brevipes, which has a short stipe in relation to the cap, and which does not ooze droplets from the pore surface.
Suillus granulatus