Tolumnia triquetra (Sw.) Nir 1994 Photo by Eric Hunt

Flower closeup Photos courtesy of David Jubineau

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Common Name The Triangular Tolumnia

Flower Size 1/2" to 3/4" [1.2 to 2 cm]

Found in the cockpit country of Jamaica on trees near flowing water in exposed conditions at elevations of 150 to 300 meters as a miniature, fan shaped, warm to cool growing epiphyte with no pseudobulbs yet to 4 or more, linear-ligulate, acute leaves held in a fan shape that blooms on a lateral, erect, to 7" [10 to 18 cm] long, slender, terete, simple or few branched, distally, few to many [5 to 15] flowered inflorescence with longlasting, slightly waxy flowers occuring in the winter and summer. This species likes a cork mount in bright light, heavy humidity and good air movement as well as hot to warm temperatures.

Synonyms *Epidendrum triquetrum Sw. 1788; Cymbidium triquetrum (Sw.) Sw. 1799; Jamaiciella triquetra (Sw.) Braem 1980; Olgasis triquetra (R. Br.) Raf. 1836; Oncidium dubium Andre 1873; Oncidium triquetrum (Sw.) R. Br 1813

References W3 Tropicos, Kew Monocot list , IPNI ; Symbolae Antillanae Vol VI Orchidaceae Urban 1909 as Oncidium triquetrum; Flora of Jamaica Fawcett & Rendle 1910 as Oncidium triquetrum drawing fide; Die Orchideen Schlechter 1915 as Oncidium triquetrum; Atlas des Orchidees Cultivees Constantin 1920 as Oncidium triquetrum drawing fide; Das Pflanzenreich Odontoglossum/Oncidium Kranzlin 1922 as Oncidium triquetrum; AOS Bulletin Vol 26 No 7 1957 as Oncidium triquetrum photo fide; Encyclopedia of Cultivated Orchids Hawkes 1965 as Oncidium triquetrum; AOS Bulletin Vol 36 #12 1967 as Oncidium triquetrum photo ok; AOS Bulletin Vol 37 No 1 1968 as Oncidium triquetrum photo fide; AOS Bulletin Vol 37 # 6 1968 as Oncidium triquetrum; AOS Bulletin Vol 70 No 3 1970 photo fide; Orchid Digest Vol 42 No 6 1978 photo fide as Oncidium triquetrum; Orchid Digest Vol 44 No 2 1980 photo fide as Oncidium triquetrum; Orchid Digest Vol 44 No 3 1980 photo as Oncidium triquetrum; AOS Bulletin Vol 51 No 2 1982 as Oncidium triquetrum photo fide; AOS Bulletin Vol 61 No 10 1992 photo fide; Rudolf Schlechter Die Orchideen Band 1C lieferung 33 - 36 2057 - 2308 Brieger 1997 drawing/photo fide; Rudolf Schlechter Die Orchideen Band 1C lieferung 44-45 pg 2763 - 2898 Brieger 2001; AOS Bulletin Vol 71 #1 2002 as Olgasis triquetra drawing fide; Orquideologia Vol. 23 No 2 2004 as Oncidium triquetrum; Orchid Species Culture: Oncidium, Bakers 2006 as Olgasis triquetra; Orchidaceae Antillaneae Nir 2000; AOS Bulletin Vol 71 No 1 2002 photo; Orchid Digest Vol 71 No 1 2007; Orchid Digest Vol 71 #1 2008 photo fide; AOS Bulletin Vol 80 #8 2011 photo fide;

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