Arenaria lanuginosa subsp. saxosa (A. Gray) Maguire  

Family: Caryophyllaceae

spreading sandwort

[Arenaria confusa Rydb., moreArenaria lanuginosa var. cinerascens (B.L. Robins.) Shinners, Arenaria saxosa Gray, Arenaria saxosa var. cinerascens B.L. Robins., Arenaria saxosa var. mearnsii (Woot. & Standl.) Kearney & Peebles, Spergulastrum lanuginosum subsp. saxosum (Gray) W.A. Weber]