According to the search results, there are two flowers that are considered "kissable": tulips and Hookers lips. Tulips are mentioned in multiple sources, while Hookers lips are mentioned in one source. Tulips are considered kissable because they have the property to close and open from time to time, like in the night or when it is raining. Hookers lips, on the other hand, have luscious red bracts that resemble lips, which attract pollinators such as butterflies and hummingbirds. However, its worth noting that the red lips on Hookers lips are not the flowers themselves, but just the kissable bracts that remain only for a short time until they reveal the plants white flowers that emerge from their center.