The largest form, native to the desert valleys of central Ecuador. Often found growing as a saxicole or on cacti, this form differs from the typical in being much larger, with a bulbous base that can reach three inches in diameter and strictly upright, fine reddish-brown leaves. The inflorescence is longer, exceeding the foliage by several inches, branched and producing many yellow flowers which have a mild fragrance. An easy species to cultivate. Grows into a nice slightly stoloniferous cluster and does well mounted or potted in a very loose, well-drained media.