ツバキ科ツバキ属の常緑低木で、学名は Camellia japonica var. ecumbens。英名はありません。
The "Yuki-tsubaki" (Camellia japonica var. ecumbens) belongs to Theaceae (the Tea family). It is a small evergreen tree that is distributed to the Sea of Honshu, from Akita prefecture south to northern Shiga prefecture. This tree is a heavy-snow region variety of Camellia. The branches are pliable and the leaves are elliptic with acute toothed edge. This camellia is protected from low temperature and dryness by being buried in snow, and it bloom immediately after waiting for snow melting. The rose pink flowers bloom from April to May. It is characterized by yellow filaments, each one being separated. Also, while camellias usually drop their flowers, this "Yuki-tsubaki" has a characteristic in that its flowers do not fall off easily.
The 49th and bottom photos are 'Shima-chidori'. They are a cultivar of the "Yuki-tsubaki" family, and was introduced by Kaoru Hagiya of Niigata in 1967 from a private house in Kamo City, Niigata Prefecture. The flowers are pinkish-red with white spots, lotus flowered (stamens are in the center of the flower and do not mix with the petals).