The Lehmann's rockjasmine (Androsace chamaejasme ssp. lehmanniana) belongs to Primulaceae (the Primrose family). It is a perennial herb that is distributed from Mt. Hayachine in Honshu, Mt. Kirigishi in Hokkaido, Rebun Island in Japan, and the Kuril Islands to Alaska, Canada, and northern Asia. It grows on dry grass and gravel in limestone areas and is about 5 cm high. The whole is covered with white vellus hair. From June to July, the flower stalks are stretched and small white flowers come in bloom. It is also known as "Chishima-kozakura" in Japan.