Its leaves , which are 3 -- 8 mm ( 0.1 -- 0.3 in ) long and may be reddish in colour , are generally covered with hairs .
S. villosum var .
Its leaves , which are 3 -- 8 mm ( 0.1 -- 0.3 in ) long and may be reddish in colour , are generally covered with hairs , although S. villosum var .