About Silene hookeri subsp. serpentinicola (T.W.Nelson & J.P.Nelson) K.L.Chambers & S.C.Meyers
Silene hookeri is a low-growing perennial herb. It grows from a woody, branching caudex, which produces decumbent or upright stems reaching up to 20 centimeters in length. The entire plant is covered in soft, gray, curly or crinkly hairs. The leaves are lance-shaped; the largest leaves, found near the base of the plant, grow up to 9 centimeters long, while smaller, narrower leaves are borne higher up the stems. Each flower has a tubular calyx made of fused sepals, marked with ten veins and covered in whitish hairs. The calyx is open at its tip, exposing five petals that may be white, pink, or purple. Each petal tip is typically divided into four lobes, which can be wide and rounded or narrow and fringelike. Small, upright appendages grow at the base of each petal.