Trigonidium lankesteri Ames 1923 Photo by Franco Pupulin and The Epidendra Website

Full shade WarmcoolWinterSpring

Common Name Lankester's Trigonidium [American Botanist in Costa Rica 1900's]

Flower Size 2" [5 cm]

Found in Costa Rica, Panama and Ecuador in mossy forests at elevations of 800 to 1000 meters as a medium sized, warm to cool growing epiphyte from wet montane forests with repent or scandent. elongate, cylindric rhizome with internodes 6 to 16" [15 to 40 cm] long, giving rise to distant, ovoid, compressed, ridged, sulcate, tapering pseudobulbs carrying 3 to 5, subcoriaceous, obl;ong-lanceolate, acute, contracted below into the slender, conduplicate, petiolate base leaves that blooms in the winter and spring on an erect, basal, usually solitary, 3.2 to 6.4" [8 to 16 cm] long, single flowered inflorescence.

Easily recognized and separable from the lowland variety T eggertonianum by the elongate rhizome, the 3 to 5 leaved pseudobulbs, the larger flowers and the apiculate petals

Synonyms Maxillaria luisae Molinari 2015; Trigonidium amparoanum Schltr. 1923

References W3 Tropicos, Kew Monocot list , IPNI ; The Orchids of Panama L.O. Williams & P Allen 1946; Rudolf Schlechter Die Orchideen lieferung 29 1777 - 1840 Brieger 1994 photo good; Fieldiana Biology, Flora Costa Ricensis Family # 39 Orchidaceae, subtribes Maxillariinae and Oncidiinae Atwood & Mora 1999 drawing fide; Manual de Plantas de Costa Rica Vol 3 Hammel, Grayum, Herrera and Zamora 2003; AOS Bulletin Vol 88 # 6 2019 as Maxillaria luisae photo fide;