 The spores are 4 – 7 by 2 – 3 µm , oblong @-@ elliptical , smooth , and embedded in the gleba . A 1982 study revealed that spores of species in the <unk> family , including Mutinus elegans , have a <unk> scar ( 0 @.@ 2 – 0 @.@ 3 µm diameter ) that is observable with scanning electron microscopy . The <unk> scar is a circular <unk> at one end of the spore , and it most likely results during the separation of the attachment of the spore to the <unk> of the <unk> . 
