What is this flower

in Plants

Does anyone know what this flower is, I had 2 plants given to me and they don't know what they are. The flowers only last about a day then fall off and then more appear
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Does anyone know what this flower is, I had 2 plants given to me and they don't know what they are. The flowers only last about a day then fall off and then more appear
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It could be a Hibiscus but not sure which variety
Thank you for the response. It looks like it could be as just researched Hibiscus and it looks like it is.Thanks
Hibiscus trionum, Flower of an hour. An annual sadly.