Achyranthes splendens var. rotundata is a shrub species growing to a height of 0.5 to 2 meters. The stems are either erect or decumbent. Its leaves are simple and arranged oppositely, with obovate blades measuring 2 to 12 cm in length and 1.5 to 7.3 cm in width. The leaf apex is rounded, and the surfaces are densely white strigose, often obscuring the epidermis, especially on the lower surface. The hairs on the leaves can spread and are 0.5 to 1.5 mm long, giving the leaves a silvery appearance on both surfaces, as noted by Hillebrand in 1888. The leaf margins are typically entire or nearly so, and the leaves are petiolate without stipules. The flowers of this shrub are found in congested spikes ranging from 3 to 25 cm in length. The rachis is densely white, pubescent or tomentose, 1.5 to 3 mm in diameter, with hairs spreading to appressed and 0.5 to 2 mm long. The peduncles are 0.6 to 3.4 cm long. Each sepal is subtended by a lanceolate, spine-tipped bract 3 to 6 mm long, and the bracteoles are 3.5 to 5 mm long and spine-tipped. The flowers are bisexual (perfect), with a calyx composed of five subequal sepals, each 6.5 to 9 mm long with an acute apex. The corolla (petals) is absent. It has 2 to 5 stamens that are connate at the base, with dithecal anthers. The superior ovary has a single ovule, a slender style, and a capitate stigma. The fruit is a 1.5 to 3 mm long utricle containing one seed per fruit. The seed surface is usually lustrous, and the endosperm is essentially absent. It is typically scattered in low-elevation areas, including open, dry forest remnants and open thickets, on talus or rocky slopes, and coralline plains. Its elevation range is primarily 0-30 meters, occasionally extending up to 500 meters.