Reference

J.G. Chmielewski, C. C. Chinnappa, J.C. Semple (1990): The genus Antennaria (Asteraceae: Inuleae) in western North America: morphometric analysis of Antennaria alborosea, A. corymbosa, A. marginata, A. microphylla, A. parvifolia, A. rosea, and A. umbrinella – Österreichische Botanische Zeitschrift = Plant Systematics and Evolution – 169: 151 - 175.