Sticky starwort, tuber starwort
The Rocky Mountain states, all states to the west, and a small area in west Texas
Dry woodland, meadows, sagebrush; up to 11,000 feet
Opposite, narrowly lanceolate, up to 5 inches long and 0.7 inches across, with ciliate margins
Stems and leaves of pseudostellaria jamesiana have a covering of short, sticky, glandular hairs, especially towards the top of the stem; pedicels and sepals are similarly hairy. Stems usually branch freely, and are square in cross-section. Leaves have a prominent, grooved midvein, and rather rough surfaces. Stems grow from a swollen, tuber-like rhizome.
Flowers are produced in open, flat-topped clusters. Sepals are ovate, while the white petals are obovate, deeply notched at the tip, and about twice as long as the sepals. The ten stamens have white filaments topped by purple anthers.