Miltoniopsis

Native: consists of 6 species, native to Costa Rica, Panama, Venezuela, Ecuador, and Colombia; grow in locations that range from hot, humid lowlands to relatively cool, humid cloudforests while one is found in humid forests about halfway between these extremes
Type: epiphytes or lithophytes
Size: blossoms open flat and are 1.6 to 4 inches across depending on species
Flowering: 2-3 spikes of large, lovely, usually fragrant blossoms from each new growth; flowers last 4-8 weeks on the plant, but are short-lived as cut flowers; can produce a second flowering and may be in bloom much of the year
Colors: white, yellow, pink, red and deep purple, often with a central pattern of a different color, called a mask
Flowering stem: axillary; inflorescences are unbranched, erect or arching
Growth pattern: sympodial
Pseudobulb: the plants have oval, compressed pseudobulbs and 8 inch, fragile looking, gray-green leaves
Roots: fine, threadlike roots
Known for: large, showy flowers resembling pansies; often referred to as Pansy Orchids
History: genus established in 1889 by Godefroy-Lebeuf, but not generally accepted until 1976, when it was resurrected by Garay and Dunsterville; named after Lord Fitzwilliam Milton, an English orchid enthusiast
   
Miltoniopsis

Flowers are large, showy and flat. Sepals and petals look similar; petals are somewhat reflexed (bent or turned backward) at the middle. Labellum is large, flat, auriculate at base, joined to the column by a central keel. Column is short; contains two pollinia.

Differ from Miltonia by having one leaf to each pseudobulb, and a lobed column that is united to labellum through a keel. In addition, column is not concave at the base.