Sigmatostalix sergii P. Ortiz 1991 Photo courtesy of Danny Lentz ©, plant grown by the Atlanta Botanical Garden

Another Flower Photo by Jay Pfahl

TYPE Drawing TYPE Drawing by Padre Pedro Ortiz Valdevieso


Common Name Sergio's Sigmatostalix [Sergio Londono Colombian Orchid enthusiast late 1900's]

Flower Size 3/8" [.9 cm]

Found in Colombia on the western cordillera in the Valle de Cauca at elevations of 1500 to 1600 meters as a miniature to small sized, warm to cool growing epiphyte with elliptic, laterally flattened pseudobulbs enveloped basally by distichous, imbricating, conduplicate sheaths and carrying a single, apical, narrowly lanceolate to elongate, acute leaf that narrows below into a conduplicate base that blooms in the winter and spring on an axillary, to 9" [22.5 cm] long, successively few flowered inflorescence arising from the leaf axils of a newly matured pseduobulb with the few flowers open on very short branches arising towards the apex.

Synonyms Oncidium sergii [Ortiz] Chase & NH Wms. 2008

References W3 Tropicos, Kew Monocot list , IPNI ; *Orquideología Vol 18 #2 174 1991 drawing fide; Native Colombian Orfchids Vol 4 COS 1992 photo fide; Rudolf Schlechter Die Orchideen Band 1C lieferung 33 - 36 2057 - 2308 Brieger 1997; Native Ecuadorian Orchids Vol 4 Dodson 2004 as S sp #2180 pg 965 photo fideOrchid Species Culture Oncidium/Odontoglossum Alliance Bakers 2006; AOS Bulletin Vol 77 No 12 2008 as Oncidium sergii; AOS Bulletin Vol 85 #8 2016 photo fide;