Petalodon (peh-TAH-loh-dun) is distinguished by a caespitose habit, a congested, successively-flowered raceme borne by a peduncle round in cross-section.  The sepals form a cup that is bent abruptly in the middle.  The petals are cartilage-like with a callus at the base that appears as a pair or a fused pair of processes.  The lip is oblong and not verrucose.  These species used to belong to Masdevallia section Dentatae.

    Petalodon collina (L.O.Williams) Luer

    Petalodon dryada (Luer & R.Escobar) Luer

    Petalodon macrogenia (Arango) Luer

    Petalodon zapatae (Luer & R.Escobar) Luer

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