Frondaria (fron-DAYR-ee-ah) is another genus with a single species, Frondaria caulescens. It is found at high altitudes from central Colombia to central Bolivia. It is unique because of the leaf-like sheaths of the ramicauls. It has a simultaneously flowered raceme of pointed petals and sepals with a tri-lobed lip. It is nearly impossible to maintain this species in cultivation.
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Frondaria caulescens (Lindl.) Luer