Being the only species known to exist in the Acrymia genus, Acrymia ajugiflora is a robust herb with a woody stem about 13 cm long. The leaf has a thin papery texture and is crowded at the apex. The leaf shape ranges from elliptic to broadly elliptic. It has a dark green colour and pale green veined. The petals of this species range from creamy white to pale yellow with dark red colour on its inner part (Keng, 1978).  This species flowers throughout the year. Furthermore, when ripe, its dry fruit splits into single-seeded parts. It has four nutlets or small nuts that are obovoid and about 1-1.5 mm long (Kiew, 2022).

This species is known to be found in Ulu Selangor and Kanching Forest Reserve in the Selangor district, and it is classified as endemic. According to Kiew (2013), the species locality mentioned by Kunstler is in fact in Ulu Selangor rather than Ulu Bubong. Kunstler mistakenly stated that Ulu Bubong is a karst limestone hill (Keng, 1978) and described it as a ‘chalky hill’. However, there is no limestone in Ulu Selangor. This correction still has been overlooked by most botanists, whereas they still cite the localities as in Perak, not in Selangor (Kiew, 2013).

Because it is a rare local species, its conservation status has been classified as Critically Endangered (Kiew, 2022).  This species prefers to live in a dipterocarp forest up to 250 m altitude in the lowlands area. Some early collectors made mistakes because they believed this species grew in limestone areas. This error is due to confusion with the nearby limestone of Bukit Takun (Kiew, 2013).