Herbs, perennial, terrestrial, apparently epiphytic in one species, photosynthetic to mycotrophic. Roots fleshy, with a few filiform roots from stem base, some terminating in tuberoids. Stems erect, usually simple, terete, succulent, glabrous. Leaves 1–10, alternate and distichous, or solitary at midstem, without stipules, glabrous, sessile, not articulate, clasping stem; blade lance-ovate to ovate, or reduced to sheathing bracts. Inflorescences terminal, solitary or 1–10-flowered racemes, flowers axillary or terminal, arrangement spiral; floral bracts consisting of smaller proximalmost leaves, ovate to cordate, foliose. Flowers resupinate or not, short-pedicellate; sepals and petals distinct and free; dorsal sepal lanceolate to oblanceolate; lateral sepals lanceolate, slightly falcate; petals linear-lanceolate to lanceolate; lip clawed, 3-lobed; disc with 3 lines or crests; column slender, 5–10 mm, footless; anther erect, white or pale green (with magenta margins in Triphora trianthophora), short-stalked, not articulate, rigid; pollinia 2; pollen in tetrads, soft, mealy; ovary fusiform, slender; stigma proximal to anther, entire or 2-lobed; rostellum simple or absent. Fruits capsules, erect or pendent, ellipsoid-ovoid or obovoid, with 6 low, narrow keels.
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Sep and lateral pet similar, ascending; lip obovate in outline, erect at base, thence decurved, 3-lobed, traversed by 3 elevated nerves, the lateral lobes triangular, the terminal one broadly rounded; anther erect at the end of the column; pollinia 2; delicate herbs, the stem bearing several alternate lvs, arising from a solid cormose base or a cluster of short, fleshy roots; fls few, axillary, ephemeral, white to pale pink, with green veins. 10, New World.
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