Bruskbolde (Earthballs)

Bruskboldene, som er lettere giftige svampe, er ret almindelige i Danmark.

These poisonous fungi are quite common in Denmark and the rest of Europe, and according to this also in North America.

Den almindeligste art hedder almindelig bruskbold (Scleroderma citrinum). Svampen er som regel ret stor, op til 10 cm. Ydersiden er skællet.

The most common earthball is common earthball, Scleroderma citrinum. The mushroom is rather large, 10 cm, and has a scaly pattern on the outside.

bruskbold

Bovist-bruskbold (Scleroderma bovista) er mindre, 3-5 cm, og ikke nær så almindelig. Det svenske navn er Potatisrottryffel, og med sin glatte overflade kunne den da godt ligne en lille kartoffel der lå på skovbunden.

Potato earthball (Scleroderma bovista) is smaller, 3-5 cm, and less common. With its smooth surface, it actually does resemble a small  potato sitting on the forest floor!

Her ses nogle lidt gamle bovist-bruskbolde et par dage efter plukning. Indeni den overskårne svamp kan man se den sorte sporemasse:

This is a picture of some rather old individuals a couple of days after picking. You can see the black spores inside the cut mushroom:

bovist

Farve (Color)

Ifølge “Färgsvampar & svampfärgning” af Lundmark og Marklund indeholder bruskboldene stofferne badion A, sclerocitrin og norbadion A.

According to “Färgsvampar & svampfärgning” by Lundmark and Marklund, both types of earthballs owe their dye potential to the content of the compounds badion A, sclerocitrin, and norbadion A.

Det giver en ganske lysægte gulligt brun farve, her fra bovist-bruskbold:

They give a quite light-fast yellowish brown, here from potato earthball:

bovistdyedwool

Links

Beskrivelse af bovist-bruskbold, inklusive et billede af dens sporer set under mikroskop backyard nature.

Description of potato earthball, indluding a picture of of its spores seen under a microscope at backyard nature

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