 The stem is 8 – 25 mm ( 0 @.@ 3 – 1 @.@ 0 in ) long and up to 2 mm ( 0 @.@ 08 in ) thick , equal in width throughout to slightly enlarged downward , flexible and filamentous but not fragile . The stem surface is dry , whitish to grayish @-@ orange , sometimes with tiny hairs on the upper portion that become coarser near the base . The stem base often has rhizomorph @-@ like strands or copious whitish mycelia . The stem , unlike the other two species of Collybia , do not originate from a sclerotium . The stem becomes hollow as it matures . Although it is not considered poisonous , C. cirrhata is too small and insubstantial to be considered edible . 
