A group of early bloomers that bloom by around April.
The flowers develop faster than the leaves, and the inner surface of the side is smooth. The color and shape of the Buddhist bracts and appendages vary widely, and they are not very popular.
Shikoku and Kyushu (up to the Tokara Islands) are the distribution areas, but late-blooming populations are known in Kyushu, and caution is required for future research. The image is from Kochi prefecture.