Camaridium antonellii is similar to the Central American C. inauditum (Rchb.f.) M.A.Blanco, but differs in the fractiflex leaf-sheaths, ovate-elliptic, acute leaves, the flowers with dark pink to purple sepals and petals, the distinctly three-lobed lip, white, spotted with purple on the lateral lobes and yellow-cream towards the apex, the mid-lobe ovate to trans-verse ovate, and lanceolate sepal.