Macradenia lutescens R.Br.

Long Gland Orchid, Trinidad Macradenia

Facts About

Accepted Synonyms: Macradenia triandra, Rhynchadenia cubensis

Macradenia lutescens, commonly known as the Trinidad Macradenia, is distributed in the West Indies, northern South America, and has been recorded in the Miami-Dade County area in Florida. This orchid has a narrow cylindrical pseudobulb and a solitary coriaceous leaf. The raceme is pendent from the base of the pseudobulb with up to 22 small flowers. The base of the sepals and petals is a yellow green variously marked with purple, brown, and red. The whitish labellum is lobed with pink stripes. The flowering period is October-November. This orchid grows lower on the trunks and branches of a variety of trees.

Macradenia lutescens is apparently secure and widespread in the West Indies, Cuba and South America but is considered endangered in Florida where it is presumed to be extirpated.


Pollinator information for this orchid has not been reported.

Ecosystem Type

Swamps, woodlands


Leaf arrangement:
Number of leaves on stem:
Form of the labellum:
the labellum is not pouch-like
Labellum outline:
the labellum is lobed
Main color of labellum:
  • crimson
  • green to brown
  • yellow
Inflorescence type:
the inflorescence is a raceme
Labellum characteristics:
the labellum is lobed
Labellum length:
Up to 12 mm
Sepal length:
12–14 mm
Plant height:
Up to 30 cm
Show All Characteristics

Native to North America


North American Conservation Status & Distribution

Conservation Status

Select a location to view conservation status:

Conservation and Wetland Status
Global Rank Apparently Secure
US Status N/A
Canadian Status N/A

North America Distribution

Adapted from USDA data