General: Mojave Sandwort (Arenaria macradenia) is a low-growing sub-shrub that has stiff, needle-like leaves, tall, slender flower stalks, and curious little flowers with five white petals. The sepals, which persistent when the flower dries, are narrow and pointed, usually with a spine at the tip. The erect stems typically are 20-40 cm tall with paired leaves. The inflorescences is an open cyme. The pedicels are 3-45 mm long. Sepals 4.5-7.2 mm long; sepal apices broadly acute, sometimes spinose. Flower petals white or yellowish 6-11 mm (1-2 times as long as sepals).

Mojave Sandwort is an uncommon component of vegetation communities in dry, well-drained gravelly areas and rocky areas in the Upper Sonoran (Mojave Desert Scrub and Pinyon-Juniper Woodland) life zone. Plants often found growing on rock faces.

Around Las Vegas, look for Mojave Sandwort in Red Rock Canyon National Conservation Area, Gold Butte National Monument, and Basin and Range National Monument.

Family: Pink (Caryophyllaceae). Also called Desert Sandwort, Eremogone macradenia.