Kuntze (1891) Armillaria tabescens (also known as ringless honey mushroom) is a species of fungus in the family Physalacriaceae.

[3] A study in Greece reported Armillaria tabescens to be more prevalent in areas where the trees were stressed due to limited moisture.

Armillaria tabescens was also recorded in poplar and eucalyptus plantations, and almond trees were found to be very susceptible to infection.

[4] The results of the study by Lushaj et al.[3] showed that Armillaria tabescens was most frequently recorded on fruit and ornamental trees compared to the other species.

[4] Other common symptoms are soft rot of cortex, dwarfing, dieback, wilting, and abnormal coloring of the leaves.

[5] Small trees are killed rapidly by Armillaria tabescens and the symptoms aren't noticeable until the leaves wilt.

However, on larger trees symptoms occur earlier and start as a thin crown with small leaves.

The trees eventually start yellowing and defoliating followed by fast wilting and dying of limbs.

[6] Armillaria tabescens is found in warm and dry regions, so, in Europe, it tends to be in southern areas.

[3] Studies in Europe have found that it exists in south-east England, France, Hungary, Italy, Portugal, Greece and, rarely, Germany and Switzerland.

Hyphae are branching structures that release enzymes to absorb nutrients from the host.

[9] The fungus has the ability to spread its mycelia throughout the root and trunk system and form mycelial mats.

Mycelia is damaging to trees because they absorb the nutrients by secreting enzymes to breakdown the plant material.

[3] The species can be cooked and eaten, even being regarded as choice,[11] but has been reported to cause upset stomachs.

[12] Armillaria tabescens additionally contains small levels of antioxidants which have been studied for possible use as protection against lipid peroxidation and free radical damage.