os pha era ▁fus ca ▁is ▁another , ▁sometimes ▁considered ▁syn onymous ▁with ▁P . ▁x anth ii . ▁▁ ▁C uc um bers ▁in ▁green house ▁environments ▁have ▁also ▁been ▁reported ▁to ▁be ▁sus cept ible ▁to ▁Le ve ill ula ▁t aur ica . ▁ ▁Lil acs ▁Mic ros pha era ▁s yr ing ae ▁is ▁a ▁fung us ▁that ▁can ▁cause ▁pow der y ▁mil de w ▁in ▁l il ac . ▁ ▁St raw ber ries ▁Pod os pha era ▁a phan is ▁is ▁the ▁cause ▁of ▁pow der y ▁mil de w ▁in ▁st raw ber ries ▁and ▁other ▁Ros aceae ▁like ▁Ge um ▁riv ale ▁( the ▁water ▁av ens ) ▁ ▁Tree ▁leaves ▁S aw ada ea ▁t ulas ne i ▁is ▁a ▁fung us ▁that ▁causes ▁pow der y ▁mil de w ▁on ▁tree ▁leaves . ▁This ▁fung us ▁attacks ▁the ▁leaves ▁of ▁the ▁A cer ▁plat ano ides ▁( N or way ▁map le ) ▁in ▁North ▁America , ▁ ▁Great ▁Britain , ▁and ▁Ireland , ▁A cer ▁pal mat um ▁( also ▁known ▁as ▁the ▁Japanese ▁map le ▁or ▁smooth ▁Japanese ▁map le ). ▁ ▁Oregon ▁gra pe ▁E rys ip he ▁ber ber id is ▁is ▁a ▁fung us ▁that ▁causes ▁pow der y ▁mil de w ▁on ▁Oregon ▁gra pe ▁leaves . ▁ ▁Arab id opsis ▁Gol ov in omy ces ▁or ont ii ▁causes ▁pow der y ▁mil de w ▁on ▁Arab id opsis ▁( rock c ress ) ▁leaves