Tuesday 21 May
Stinkhorn (Phallus impudicus)
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Stinkhorn fact file
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Its terrible foetid smell as well as an unmistakable appearance makes the stinkhorn one of the most easily recognised species of fungi (2). Young fruit bodies (the visible part of the fungus) are known as 'eggs', and have often been confused with real eggs. The phallic mature fruit body grows extremely rapidly from the egg, taking just 1 and a half hours to reach full size in one recorded case. The conical cap is olive green in colour and rapidly becomes slimy, developing an unpleasant smell; it has a honeycombed appearance (2).
WARNING: Many species of fungus are poisonous or contain chemicals that can cause sickness. Never pick and eat any species of fungus that you cannot positively recognise or are unsure about. Some species are deadly poisonous and can cause death within a few hours if swallowed.
- Young fruiting body (egg) diameter: 3-4 cm (2)
- Mature fruiting body cap height: 4.5-11 cm (2)
- Mature fruiting body cap diameter: 3-5 cm (2)
Fungi are neither plants nor animals but belong to their own kingdom. They are unable to produce their own food through the process of photosynthesis, as plants do; instead, they acquire nutrients from living or dead plants, animals, or other fungi, as animals do. In many larger fungi (lichens excepted) the only visible parts are the fruit bodies, which arise from a largely unseen network of threads called 'hyphae'. These hyphae permeate the fungus's food source, which may be soil, leaf litter, rotten wood, dung, and so on, depending on the species (3).
The fruit bodies of the stinkhorn may grow solitarily or in groups, and are present from July to November (2). The young fruit bodies are edible, and are said to taste of peas (3); they can be eaten fried and are treated as a delicacy in Germany. The mysterious appearance of these 'eggs' led to the widespread belief that they were witches eggs or eggs of the Devil (2). Stinkhorns have been used in love potions and aphrodisiacs because of their phallic appearance, and to treat epilepsy, gout and rheumatism in central Europe. Some birds, snails and flies eat the mucous produced by the cap. Stinkhorn spores have been found in fly and bird dung; spores have been known to germinate inside flies, and the hyphae of the fungus grow outwards from the dead body of the fly (2).Top
Common throughout much of Europe; it is common in North America to the west of the Mississippi, but becomes rare in the east. It is also found in south-east Australia (2).Top
This fungus is not threatened.Top
No conservation action has been targeted at this species.Top
Find out more
For more information on British fungus, see:
Association of British Fungus Groups:
This information is awaiting authentication by a species expert, and will be updated as soon as possible. If you are able to help please contact:
- Fruit body
- In fungi, the fruit body is the visible part of the fungus which bears spores (microscopic particles involved in both dispersal and reproduction).
- Metabolic process characteristic of plants in which carbon dioxide is broken down, using energy from sunlight absorbed by the green pigment chlorophyll. Organic compounds are made and oxygen is given off as a by-product.
- Microscopic particles involved in both dispersal and reproduction. They comprise a single or group of unspecialised cells and do not contain an embryo, as do seeds.
National Biodiversity Network Species Dictionary (Jan 2003):
- Dickinson, C. and Lucas, J. (1979) The encyclopedia of mushrooms. Orbis Publishing, London.
- Courteciusse, R. (1999) Mushrooms of Britain and Europe. Harper Collins Publishers, London.
- Jordan, M. (1995) The encyclopedia of fungi of Britain and Europe. David and Charles, Devon.
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