"Hayter - R. arkansana. Found by WHS [Walter Schowalter] on dry hillside 2 miles S.E. of Hayter. [Alberta - Canada]. In wild usually below 15 cm, under cultivation up to 30 cm. No plants available for description. buds white with pink stripes, opening pure white. Petals up to 15. Twice blooming. " Walter Schowalter notes ca 1960. Brackets mine.