plant What are the differences between Portulaca grandiflora and Portulaca triangularis? How to distinguish between similar species! Where is it native? Why is it called "three o'clock grass"? There were hardly any insects visiting the flowers! Is it true that the fruit "bursts open" to scatter the seeds?
Portulaca grandiflora and Portulaca triangularis are two species of Portulaca grandiflora that produce pink flowers. Both are found in Japan as invasive species, either as cultivated plants or through escaped growth. Both species are native to the Americas. These two species differ in many ways, including the arrangement of the inflorescence, the presence or absence of ridges on the flower stalk, the size of the petals, and the shape of the stigma...