
Laurobasidium Lauri
laurobasidium lauri
Laurobasidium lauri is a fascinating, host-specific parasitic fungus famous for producing dramatic, antler-like growths on the trunks and branches of laurel trees. Found exclusively in the unique, mist-shrouded Laurisilva forests of Macaronesia (including Madeira, the Azores, and the Canary Islands), this species induces the host plant to form large, woody galls known locally as 'Madre de louro' (Laurel Mother). Despite its parasitic nature, it typically coexists with its host for many years without killing it. This fungus plays a distinctive role in the cloud forest ecosystem, showcasing a highly evolved and specialized symbiotic relationship that relies entirely on the humid, ancient laurel forest environment. For quick identification of Laurobasidium Lauri during outdoor trips, download the Snappit app.
Habitat: Found in humid, high-altitude laurel forests (Laurisilva), growing exclusively as a parasite on the trunks and branches of Macaronesian laurel trees.
Appearance
In the wild, Laurobasidium lauri is easily recognized by its spectacular, multi-lobed, or antler-like galls erupting directly from the bark of laurel trees. These growths are typically yellowish-brown to dark chocolate brown, with a tough, woody-fleshy texture. They can range in size from small, finger-like projections of a few centimeters to massive, branched structures reaching up to 50 centimeters in length. During periods of high humidity, the surface of these galls may take on a velvety, pale appearance as they become covered in microscopic, spore-producing structures.

Category
FungiRarity
Common
Danger
1/5 · Very low
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Interesting facts
Despite forming massive, tumor-like growths, the fungus rarely kills its host tree, maintaining a stable parasitic equilibrium for decades.
In Madeira, these bizarre growths are traditionally called 'Madre de louro', which translates to 'Laurel Mother'.
Its appearance is highly weather-dependent; the dry galls look like dead wood, but they swell and become active spore-producers in heavy mist.
Special abilities
Gall Induction
Chemical signaling triggers the host laurel tree to grow massive, protective woody structures that house and feed the fungus.
Moisture-Triggered Sporulation
Releases spores predominantly during periods of high mist and rainfall, ensuring optimal conditions for colonization.
Perennial Persistence
The vegetative structure survives for multiple years within the host tissues, producing new spore-bearing galls season after season.
Measurements & details
- Length
- 5-50 cm
- Weight
- 0.1-2 kg
- Lifespan
- 2-15 years
Diet & Feeding
Absorbs water, carbohydrates, and vital nutrients directly from the living vascular tissues of its host laurel trees.
Primary Foods
- Laurus novocanariensis sap
- Laurus azorica nutrients
- Laurus nobilis sap
Foraging Method
- Parasitic Absorption
Ecological connections
Canary Laurel
Laurus novocanariensis
Acts as a host-specific parasite, inducing gall formation on the branches and trunk of this endemic tree.
Azores Laurel
Laurus azorica
Utilizes this host tree species in the Azores to obtain nutrition and structural support.
Traits
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Also known as
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Safety
Danger
1/5 · Very low
No special safety notes yet.
Frequently Asked Questions
How to identify Laurobasidium Lauri?
The easiest way to identify Laurobasidium Lauri is to use the Snappit nature identifier app.
How long is Laurobasidium Lauri?
5-50 cm
How much does Laurobasidium Lauri weigh?
0.1-2 kg
How long does Laurobasidium Lauri live?
2-15 years
What does Laurobasidium Lauri eat?
Absorbs water, carbohydrates, and vital nutrients directly from the living vascular tissues of its host laurel trees.
Where is Laurobasidium Lauri usually found?
Found in humid, high-altitude laurel forests (Laurisilva), growing exclusively as a parasite on the trunks and branches of Macaronesian laurel trees.
How does Laurobasidium Lauri hunt?
Parasitic Absorption
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