The narrow, arrow-shaped, opposite leaves of Microloma sagittatum can be observed in the photo. The leaf midrib is clearly visible as are some whitish hairs on the surface. Leaf margins are rolled under. The leaves and flowers grow on several, slender, twining vines that may reach 1 m.
The cylindrical to tapering corolla of the flower is based on a pink or white star-shaped calyx with sharp tips. The corolla consists of narrow petals that converge at the closed mouth. The flowering is seen from winter to midspring. Pollination happens when sunbirds pierce the closed flowers with their sharp beaks in search of nectar. Pollen is caught upon their tongues for involuntary delivery to other flowers during the birds’ feeding (Bond and Goldblatt, 1984; Vlok and Schutte-Vlok, 2010).