Suillus species are associated with coniferous trees. So it's not unusual to find this orange-brown to brown-yellow mushroom particularly under pine trees in calcium-rich dunes and on the (eastern) Wadden Islands. The dotted stalk-suillus is a bolete, having tubes and pores instead of gills. When young, these tubes and pores can exude pale milky droplets, explaining its nickname weeping bolete. It is a very tasty mushroom. However, it sometimes causes skin irritations when touched. It's best not to pick this mushroom in the Netherlands, since it is rare and listed as threatened on the Red List.

Velvet boletes grow on plant litter from coniferous trees in nutrient-poor arid sandy soils. This yellowish-brownish mushroom has a sturdy stem and cap, which feels greasy as it ages and tacky in damp weather. Velvet boletes are common to find in late summer. When young, the mushroom cap feels downy-like, probably explaining its name 'velvet'.

Velvet boletes are members of the same family as the dotted-stalked suilus. They too have pores and tubes instead of gills. Although edible, they have an unpleasant smell and are said to have a metallic flavor.

Velvet boletes are rare in the Netherlands and listed as threatened on the Red List.

The surprise webcap is found growing among coniferous trees or mixed forests, preferably containing conifers and birch. In the past, it was called the red-gilled webcap, which correctly describes the color of the gills. The mushroom has a radishy odor. It is suspected to be a poisonous mushroom. Surprise webcaps are used for dying yarns.

This mushroom is fairly rare in the Netherlands. It isn't specifically a coastal species, but it grows well on several of the Wadden Islands, particularly Terschelling. It is also found occasionally in the eastern part of the country, on sandy, humus-poor grounds.

The Mycena clavicularis grows on plant litter from pine needles in arid woods with rich sand. It is a brownish mushroom, with a long stem in the same color. Altogether, the mushroom is no larger than 6 centimeters. It often has greasy feeling. Mycena clavicularis is a rare mushroom in the Netherlands, found particularly in the summer and autumn along the North-Holland coast and Wadden Islands.

Strange name for a mushroom, man on horseback! Other nicknames also refer to horses, such as 'yellow knight' or 'saddle-shaped tricholoma'. The cap and stem of this mushroom are usually yellow and the cap is sticky. Its gills are lemon-yellow. This mushroom is considered very tasty. In Medieval times, you had to be a knight to be allowed to eat it. However, it's now believed to be the cause of death in various cases so it's better to leave this mushroom alone. Besides, it's quite rare in the Netherlands. The man on horseback is associated with pine trees but is sometimes found in deciduous woods as well. It has been found on Terschelling and Vlieland, as well as areas in the central part of the country.