in omorphic ▁( rad ial ly ▁symmet rical , ▁like ▁in ▁Ger an ium ) ▁or ▁slightly ▁z yg omorphic ▁( with ▁a ▁bil ater al ▁symmetry , ▁like ▁in ▁Pel arg on ium ). ▁The ▁cal y x ▁and ▁the ▁cor ol la ▁are ▁both ▁pent amer ous ▁( with ▁five ▁lo bes ), ▁pet als ▁are ▁free ▁while ▁sep als ▁are ▁conn ate ▁or ▁un ited ▁at ▁the ▁base . ▁The ▁and roe ci um ▁consists ▁in ▁two ▁wh or ls ▁of ▁five ▁stam ens ▁each , ▁some ▁of ▁which ▁can ▁be ▁un fert ile ; ▁the ▁p ist il ▁consists ▁of ▁five ▁( less ▁commonly ▁three ) ▁merged ▁car p els . ▁The ▁linear ▁st ig mas ▁are ▁free , ▁and ▁the ▁ov ary ▁is ▁superior . ▁ ▁The ▁ne ct aries ▁are ▁local ised ▁at ▁the ▁bases ▁of ▁the ▁ant ese pal ous ▁stam ens ▁and ▁are ▁formed ▁by ▁the ▁re cept acle . ▁Pel arg on ium ▁has ▁only ▁one ▁ne ct ary ▁g land ▁on ▁the ▁ad ax ial ▁side ▁of ▁the ▁flower . ▁It ▁is ▁hidden ▁in ▁a ▁t ube - like ▁cav ity ▁which ▁is ▁formed ▁by ▁the ▁re cept acle . ▁F lower ▁morph ology ▁is ▁conser ved ▁within ▁Ger ania ceae , ▁but ▁there ▁is ▁a ▁large ▁divers ity ▁in ▁fl oral ▁architecture . ▁Flow ers ▁are ▁usually ▁grouped ▁in ▁c ym es ▁( e . g . ▁in ▁Ger an ium ), ▁um b els ▁( e . g . ▁in ▁Pel