Zygopetalum (abbreviated Z.) is a genus of approximately fourteen accepted species in the orchid family Orchidaceae, order Asparagales. Native to South America — with the majority of species concentrated in Brazil — these orchids grow in humid forests at low to mid elevations, where they colonise both tree bark as epiphytes and the forest floor as terrestrials.
Plants are robust in form, producing ovoid-conical pseudobulbs and glossy, strap-like, plicate leaves that are apical, oblong or elliptic-lanceolate, and acute to acuminate at the tip. From the base of the pseudobulbs emerges an erect, racemose inflorescence that can reach 60 cm in length — longer than the leaves — bearing few to several flowers subtended by prominent bracts that equal the length of the ovary. The flowers are a defining feature of the genus: fragrant, waxy, and remarkably long-lived, they appear in combinations of green, purple, burgundy, and raspberry, often in intricate patterning. The generic name derives from the Greek zugón ("yoke"), alluding to the distinctive yoke-like callus at the base of the lip.
Zygopetalums are prized in horticulture for their ease of culture relative to many orchid genera and are widely grown as cut flowers.
Etymology
The name Zygopetalum derives from the Greek word zugón, meaning "yoke," referring to the yoke-like growth (callus) found at the base of the lip petal. The genus carries the unique abbreviation Z. among all orchid genera.
Distribution
Zygopetalum species occur in humid forests at low to mid elevations across South America, with the greatest diversity in Brazil. The genus is absent from Central America and temperate regions.
Cultivation
Zygopetalum orchids are regarded as relatively easy to grow compared with many other orchid genera, tolerating a range of intermediate temperatures and intermediate light levels. They are widely cultivated both as ornamental container plants and as cut flowers, valued for the fragrance and longevity of their blooms.
