Zelenkoa

{{short description|Species of plant}}

{{Speciesbox

| image = Zelenkoa onusta at US Botanic Garden - Sept 2011 - Stierch.jpg

| image_caption = Inflorescences

| display_parents = 4

| genus = Zelenkoa

| parent_authority = M.W.Chase & N.H.Williams

| species = onusta

| authority = (Lindl.) M.W.Chase & N.H.Williams

| synonyms_ref =

| synonyms = *Oncidium onustum Lindl.

}}

Zelenkoa is a genus of flowering plants from the orchid family, Orchidaceae. It contains only one known species, Zelenkoa onusta, native to Ecuador and Peru.{{Cite book|title=Complete Guide to Orchids|last=Books|first=Ortho|date=2005-01-18|publisher=Meredith Books|isbn=9780897215060|pages=171|language=en}}{{Cite web|url=http://miosjournal.org/journal/2012/01/DetailedReviewZelenkoa.html|title=A Detailed Review of Zelenkoa onusta (2001)|website=miosjournal.org|access-date=2018-07-20}}

Zelenkoa onusta is an epiphytic desert orchid, that survives in the harsh conditions of dry forests in southwestern Ecuador and northwestern Peru between sea level and 1200 meters, growing on trees and cacti. Flowers are 2.cm wide.