However, the seeds of " A . bidwillii " are much larger, long and wide, than the seeds of " A . mirabilis " . " A . bidwillii " also exhibits cryptocotylar hypogeal germination ( the cotyledons are non-photosynthetic and remain in the shell on germination ), while there is evidence that indicates that " A . mirabilis " and other extinct members of the section " Bunya " exhibited epigeal germination ( the cotyledons are photosynthetic and expand above-ground ).
