Suillus collinitus (Fr.) Kuntze

2 Observations

2 weeks ago Last Observed

Suillus collinitus is a pine bolete, with no English name of its own, that is easily passed over as the commoner Weeping Bolete (Suillus granulatus). Its orange-brown to reddish-brown cap is slimy when wet and streaked with fine, darker fibres, and the small pores are pale yellow to greenish-yellow. The yellow stem has no ring and is covered in small glandular dots, especially near the top.

The clincher is at the base. Dig one up carefully and you will see that the bottom of the stem and the threads of mycelium are pink. It grows with two-needled pines such as Scots Pine, often on dry or sandy soils, from August into November.

The Weeping Bolete has white mycelium and weeps milky droplets from its young pores, and Slippery Jack (Suillus luteus) has a large ring. It is edible but poorly rated. It is probably under-recorded, so it is well worth recording.

Spore Print

Season

Native

non-toxic

Distribution

Locally common and widespread

Habitat

Occurs with two-needled Pinus species

Etymology

Suillus is from the Latin sus, 'pig', usually taken to refer to the greasy cap. collinitus is Latin for 'smeared', after the slimy cap.

Associates

Pinus

Cap

Convex to conical, expanding with age, 4-10 cm across, and reddish-brown. The cap has innate fibrils and is viscid when wet, with the margin sometimes becoming wavy.

Colour
Shape	Convex, Conical, Expanded
Surface	Fibrillose, Viscid
Width	4 - 10 cm

Pores

Small, pale yellow to greenish-yellow, browning with age.

Colour
Shape	Round
Size	small

Tubes

Colour

Flesh

The flesh is pale yellow and firm, somewhat pinkish in the base of the stem. The smell is not distinctive, and there is no marked colour change on cutting.

Colour
Odour	Not distinctive

Stem

The stem is pale yellow, cylindrical to tapering, and has no ring. It is covered with numerous small whitish to brown glandular dots, particularly at the top. The base and basal mycelium are somewhat pinkish.