Stylidium darwinii  Stylidium darwinii is a small, erect annual plant that belongs to the genus "Stylidium" (family Stylidiaceae). It grows up to tall. Elliptic-oblong or obovate to orbicular leaves are scattered and alternate along the simple, glabrous stem. The leaves are generally 2–3 mm long and 1.5-1.8 mm wide. Inflorescences produce many violet-pink flowers, which flower from September to November. "Stylidium darwinii" is only known from Anshi National Park in the Uttara Kannada district of Karnataka, India. Its habitat is recorded as being moist gravelly soils on the outskirts of evergreen forests near roadsides at an altitude of . It can be found in association with several carnivorous plant species, including "Drosera burmannii", "Drosera indica", and "Utricularia caerulea". The specific epithet "darwinii" was given to this species in honor of Charles Darwin. This species was first located in 2007 as part of a floristic survey of Anshi National Park and was first formally described by Sachin A. Punekar and P. Lakshminarasimhan in 2010. It was placed in subgenus "Andersonia", but the authors did not identify a section. They did, however, note that "S. darwinii" is closely allied with "S. kunthii", "S. inconspicuum", and "S. tenellum".