First of all, we should know that there is an alias of manzhusha Hua, called "red other shore flower". Then the relationship between them is very clear. In fact, there are three kinds of colors on the other side: red, white and yellow. The red ones will bloom in hell, the white ones will bloom in heaven, and manzhusha Hua is the red one on the other side.
However, when we talk about Datura, it mainly refers to the plants of Datura. They all belong to Solanaceae, so it has no direct connection with the first two kinds of flowers
First of all, we have just said that marzuela belongs to the red one of the other flowers, so they have a larger range compared with the other flowers. As we said above, there is no relation between mandala and them, so there is no way to compare the range
Then there is the difference between their flower language. The flower language of the first plant is quite special, which is different in different countries. For example, in Japan, its flower language is "sad memories", in North Korea, it is "mutual yearning", and in China, it is "beautiful and pure". The second plant's flower language is "endless love", "the omen of death", and "the call of hell". The third kind of flower language is "endless missing" and "despair of love".
Finally, the difference between their names. The origin of the first plant is related to the season. The week of the spring equinox and the autumn equinox are called "the other side of spring" and "the other side of autumn", respectively, hence the name. The second plant is transliterated from Sanskrit. The third plant is from the Sutra.