About Anulocaulis annulatus (Coville) Standl.
Anulocaulis annulatus, with the scientific name Anulocaulis annulatus (Coville) Standl., is a species of flowering plant in the four o'clock family, commonly known by the common name valley ringstem. It is endemic to the Mojave Desert of California, and occurs most commonly in areas around Death Valley. This plant is a perennial herb that grows multiple thin, erect stems from a thick caudex; the stems can sometimes grow taller than one meter. The smooth stems have darkened internodes at intervals, which are glandular and sticky. Most of the plant's leaves grow at its base. Each leaf has a short petiole and a thick, bumpy blade that can reach up to 10 centimeters wide. The leaf surface is covered in large, stiff hairs that have glandular bases. A branching inflorescence holds clusters of very hairy, tubular flowers. Each flower is just under one centimeter long, with a greenish throat and a striped pink face. The fruit is a small, hard structure that is approximately half a centimeter long.
