 The basidia are 15 – 25 × 3 @.@ 5 – 5 @.@ 5 µm and have a slim , club @-@ like shape . Each basidium features four sterigmata , each of which bear one spore . The spores ' shape is slimly ellipsoidal or cylindrical . Their surface is smooth and their walls are thin . Although they are colourless and hyaline , the spores are amyloid , meaning they will turn bluish or purple when stained with Melzer 's reagent . This characteristic differs from other very similar species , and this gave the genus its name . 
 The basidia <a href='drop_aux' title='1'><mark>are</mark></a>15 – 25 × 3 @.@ 5 – 5 @.@ 5 µm and <a href='got' title='2'><mark>have</mark></a> a slim , club @-@ like shape . Each basidium <a href='uninflect' title='3'><mark>features</mark></a> four sterigmata , each of which bear one spore . The spores <a href='null_genetive' title='4'><mark>'</mark></a>shape <a href='drop_aux' title='5'><mark>is</mark></a>slimly ellipsoidal or cylindrical . Their surface <a href='drop_aux' title='6'><mark>is</mark></a>smooth and their walls <a href='drop_aux' title='7'><mark>are</mark></a>thin . Although they <a href='drop_aux' title='8'><mark>are</mark></a>colourless and hyaline , the spores <a href='drop_aux' title='9'><mark>are</mark></a>amyloid , meaning they will turn bluish or purple when stained with Melzer <a href='null_genetive' title='10'><mark>'s</mark></a>reagent . This characteristic differs from other very similar species , and this gave the genus its name . 
Da basidia 15 – 25 × 3 @.@ 5 – 5 @.@ 5 µm and got a slim , club @-@ like shape . Each basidium feature 4 sterigmata , each of which bear one spore . The spores  shape slimly ellipsoidal or cylindrical . Their surface smooth and their walls thin . Although they colourless and hyaline , tdaspores amyloid , meaning they gon turn bluish or purple when stained wid Melzer  reagent . dis characteristic differs from other very similar species , and this gave thdaenus its name .