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SULPHUR TUFT

Hypholoma fasciculare

(aka: Naematoloma fasciculare)
Tuft Family [Strophariaceae]  

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Photo: © RWD
Forms spectacular clumps on dead wood.


Photo: © RWD
Cap is smooth and matt, yellowish going darker to orange near the centre, up to 7cm across.


Photo: © RWD
Stipe up to 9cm long, often curved and concolorous with the cap, darkens towards the base as it ages.


Photo: © RWD
Looking a little like chewed baked muffins or crumpets, but poisonous! Some are sulphur/sulfur yellow (spelling dependant upon whether you are a chemist or a layman)


Photo: © RWD
Stipe concolorous with cap.


Photo: © RWD


Photo: © RWD


Photo: © RWD
Gills are crowded and adnate, a distinctive yellow-green in colour turning purplish-black. The spores are brown and often cling to the remains of the veil in the so-called ring zone.


Some similarities to : Parrot Waxcap.

Slight resemblance to : Conifer Tuft.

Distinguishing Feature : Yellowish-green gills.

TRITERPENOID STEROIDAL ALKALOIDS


It is poisonous, containing two triterpenoid alkaloids Fasciculol E and Fasciculol F, both named after the scientific name for Sulphur Tuft itself. These two fasciculols differ from one another only by the position of the nitrogen-containing chain on the left, which is similar to an N-acyl amino acid. The damage to the liver resembles that due due Amatoxin poisoning. Fasciculol F is also found in another similar mushroom, Brick Tuft Hypholoma lateritium (aka Hypholoma sublateritium aka Naematoloma sublateritium) which is brick-red within (not visible from the outside).

Fascucilols are allelochemicals, which are able to suppress the growth of surrounding plants, a ploy the mushroom uses to its advantage. Several mushroom species produce differing non-proteinogenic amino acids (NPAAs) such as the branched chain on the left, or other NPAAs such as Azetidine-2-carboxylic Acid, 2-amino-5-chloro-4-pentenoic Acid and 2-amino-3-cyclopropyl-butazoic Acid.


  Hypholoma fasciculare  ⇐ Global Aspect ⇒ Strophariaceae  

SULPHUR TUFT

Hypholoma fasciculare

(aka: Naematoloma fasciculare)
Tuft Family [Strophariaceae]  

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