arg on ium ) ▁or , ▁more ▁rarely , ▁sp ikes . ▁ ▁Ger ania ceae ▁are ▁normally ▁pol lin ated ▁by ▁insect s , ▁but ▁self - pol lin ation ▁is ▁not ▁un common . ▁ ▁The ▁fruit ▁is ▁a ▁unique ▁sch iz oc arp ▁made ▁of ▁five ▁( or ▁three ) ▁a chen es , ▁in ▁the ▁lower ▁part ▁the ▁a chen es ▁are ▁inside ▁the ▁cal y x , ▁while ▁the ▁upper ▁part ▁( the ▁st yl ar ▁be ak ) ▁is ▁the ▁style ▁of ▁the ▁flower , ▁looking ▁like ▁a ▁kind ▁of ▁long ▁be ak ▁over ▁the ▁a chen es . ▁When ▁the ▁fruit ▁is ▁m ature ▁the ▁style ▁breaks ▁into ▁five ▁( or ▁three ) ▁h yg ro scop ically ▁active ▁( ready ▁to ▁abs orb ▁water ) ▁br ist les ▁that ▁curl , ▁causing ▁the ▁a chen es ▁to ▁be ▁released . ▁ ▁D iffer ences ▁between ▁the ▁gener a ▁ ▁California ▁la cks ▁fil aments ▁without ▁an thers ▁( called ▁st amin odes ), ▁but ▁the ▁lower ▁half ▁of ▁the ▁five ▁fert ile ▁stam ens ▁is ▁made ▁much ▁wider ▁by ▁a ▁wing ▁with ▁a ▁rounded ▁top ▁on ▁each ▁side ▁of ▁the ▁narrow ▁higher ▁part ▁of ▁the ▁fil ament ▁that ▁car ries ▁an ▁an ther . ▁Ger an ium ▁only ▁has ▁ten ▁fert ile ▁stam ens ▁without ▁wings ▁and ▁la cks ▁st amin odes , ▁except ▁for ▁G . ▁p us ill um ▁that ▁only ▁has ▁five ▁stam ens . ▁M ons onia ▁only ▁has ▁fifteen ▁fert