H. petiolaris
Introduction '''''H. petiolaris''''' may refer to:* ''Hakea petiolaris'', the sea-urchin hakea, a shrub or small tree species endemic to the south-west of Western Australia* ''Helianthus petiolaris'', the prairie sunflower, a plant species in the genus ''Helianthus''* ''Hydrangea petiolaris'', a species native to the woodlands of Japan, Korea and Sakhalin in easternmost Siberia* ''Hylaeorchis petiolaris'', a synonym of ''Maxillaria petiolaris''
See also * Petiolaris (disambiguation)