Mushroom-like fruiting body, fleshy, but with pores underneath, rather than gills.
Most species are mycorrhizal. Those which are found under exotic trees have been introduced along with their hosts, those in native forests are indigenous. An exception is Chalciporus piperatus, an introduced species common under pines, but sometimes also found under Nothofagus.
The saprobic genus Favolaschia has also been included here because it has pores rather than gills, although it is phylogenetically a 'mushroom'.
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The pore surface has an almost spongy appearance, and the stalk is deeply creviced.
Two species in New Zealand, both indigenous, one endemic. Ectomycorrhizal, under beech and tea-tree.
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The genus is characterised by the cap being dry (rather than slimy as in Suillus), never with a ring around the stalk, and the spore print olivaceous when fresh.
There are three indigenous species, all endemic, plus one introduced. The indigenous species are all associated with tea-tree. The introduced B. edulis is associated with oaks at a few South Island localities.
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The genus is characterised by the pores often having reddish colours, and the base of the stipe with bright yellow mycelium. The cap is viscid. Spore print cinnamon to flesh-brown.
Two species in New Zealand, one indigenous and endemic under Nothofagus, the other exotic and typically under pines and introduced broadleafed trees.
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The pores on the undersides of the caps suggest a relationship with the boletes, but Favolaschia is in fact related to the mushroom Mycena. Fruiting bodies are small, but often found in large numbers.
There are 3 native species, F. pustulosa on fallen wood, and F. cyatheae and F. austrocyatheae on dead tree fern fronds. The tree fern-inhabiting species have...
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A single species in New Zealand, the introduced 'birch bolete'. Found only under silver birch.
Edible and choice.
The very bitter <...
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Very large, up to 60cm diam. A single species in New Zealand. Found under a wide range of plants, in both indigenous forests, as well as parks and gardens. Not particularly associated with mycorrhizal trees, so appears to have a saprobic lifestyle, unusual for the boletes. Distinguished microscopically because it has clamp connections (lacking in all other New Zealand boletes).
Widely distri...
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The slippery jacks. Large boletes, characterised by a slimy cap. The stalk is often dotted with small, dark glands, and there is sometimes a veil covering the pores when young, forming a ring aropund the stalk when mature. All species in New Zealand are associated with introduced trees. Mycorrhizal.
There are about six species in New Zealand, S. brevipes under several conifers, S. g...
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At least 7 indigenous species, and several exotic. Caps dry, finely felted. The genus is defined by the anatomical structure of the pores.
Of the native species Xerocomus griseoolivaceus occurs under tea-tree, the others all
under Nothofagus. Each of these is mentioned below.
Of the exotic species, Xerocomus chrysenteron, occuring under exotic broadleafed trees,
has a d...
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