`venice mallow` flower - hibiscus trionum

acetosella annuum arboretum arnottianus bladder bloom blossom boryanus botanical botanist botany brackenridgei cannabinus dissectus europe flora florist flower flowers gallen garden hibiscus horticulture hour houseplant ketmia leaf mallow malvaceae malvales modesty nature ornamental petals plants puarangi purple rose saint shoofly summer swiss switzerland the trionum venice vesicarius weed white wildflower