Photograph from Lewis and Clark Herbarium/Academy of Natural Sciences
Narrow-Petaled Stonecrop (Worm-Leaf Stonecrop)
Sedum stenopetalum
July 1 or 2, 1806, at Traveler's Rest, Montana.
Widespread perennial with thin stems up to 8 in (20 cm) in length. Leaves are alternate, linear or narrowly linear-lanceolate. The petals are yellow and range from 0.2-0.3 in (6-8 mm) long.
Arid or dry rocky areas in grasslands, sagebrush desert, and ponderosa pine forest.
From British Columbia south to California and east to western Montana.