Oncidium longipes Lindl. 1850 SECTION Barbata

Photo by Jay Pfahl

Another Clone with black in the coloumn

Photo by Dale and Deni Borders

Plant and Flowers in situ Minas Gerais, Brazil

Photo by Ismael Nilton Vischi

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Common Name The Long Column Foot Oncidium

Flower Size 1 to 1 1/2" [2.2 to 3.5 cm]

Found in Peru, southern Brazil and Paraguay in cool montane forests as well as the lowlands along river banks as a small sized, cool to hot growing epiphyte with oval, elongate psuedobulbs with one or two, apical, linear-oblong, mucronate leaves and blooms in the summer through fall with an erect, short to 6" [15 cm] fractiflex, loosely 2 to 6 flowered, cinnamon to floral scented raceme.

Said to be very similar or conspecific with O. uniflorum. Mount in tree fern or pot with a finer mixture, give hot to cool temperatures, high humidity, bright indirect light and good air circulation. Water often while growing and then less as the pseudobulbs mature for a dry winter rest.

This species has two similar orchid relatives, O. uniflorumand O regentii but differs in the larger than 8" [20 cm] plant, an inflorescence much shorter than the leaf, large flowers 3.5 cm from dorsal to lateral sepal, a lip that is slightly smaller than the lateral petals, large lateral lobes of the lip in relation to the midlobe, a round isthmus with ciliate margins, a column larger than 5mm a large stigma and a tabula infrastigmata that is longer than wide.

Kew puts O eurycline as a synonym of this species but I have left it separate pending better references.

Synonyms Alatiglossum longipes ( Lindl. & Paxton ) Baptista 2006; Alatiglossum unicolor (Rolfe) Baptista 2006; Gomesa longipes (Lindl.) M.W.Chase & N.H.Williams 2009; Kleberiella longipes (Lindl.) V.P.Castro & Cath. 2006; Kleberiella unicolor (Rolfe) V.P.Castro & Cath. 2006; Oncidium biflorum Barb. Rodr. 1881; Oncidium hasslerii Cogn. 1906; Oncidium janeirense Rchb. f. 1954; Oncidium longipes var. monophyllum Regel 1863; Oncidium monophyllum (Regel) Herter 1956; Oncidium oxyacanthosmum Rchb. f. ex L. Linden 1882; Oncidium unicolor Rolfe 1893

References W3 Tropicos, Kew Monocot list , IPNI ; Bonplandia Rchb.f 1854 as O janierense; Die Orchideen Schlechter 1915; Atlas des Orchidees Cultivees Constantin 1920 drawing ok; Das Pflanzanreich Regni Vegetabilis Conspectus Odontoglossum/Oncidium Kranzlin 1922 as Oncidium unicolor; Das Pflanzanreich Regni Vegetabilis Conspectus Odontoglossum/Oncidium Kranzlin 1922; Das Pflanzanreich Regni Vegetabilis Conspectus Odontoglossum/Oncidium Kranzlin 1922 as O bicolor; Encyclopedia of Cultivated Orchids Hawkes 1965; AOS Bulletin Vol 36 #12 1967 photo ok; AOS Bulletin Vol 37 No 1 1968 photo fide; Orchidaceae Brasilenses Band 2 Pabst & Dungs 1977 drawing fide; The Manual Of Cultivated Orchid Species Bechtel, Cribb & Launert 1992 photo good; Orchids of the High Mountain Atlantic Rainforest in SE Brazil Warren & Miller 1994; Rudolf Schlechter Die Orchideen Band 1C lieferung 33 - 36 2057 - 2308 Brieger 1997; Orchids Travel By Air A Pictoral Safari Mulder, Mulder-Roelfsema and Schuiteman 1990 photo fide; Australian Orchid Review Vol 66 No 2 2001 photo; The Pictoral Encyclopedia of Oncidium Zelenko 2002; AOS Bulletin Vol 74 No 3 2005 photo fide; AOS Bulletin Vol 74 No 6 2005 photo fide; AOS Bulletin Vol 74 #10 2005 photo fide; Oncidium Vol 2 Koniger 2005 drawing/photo fide; 100 Orquideas Argentinas Freuler 2005 photo ok; Orchid Species Culture: Oncidium, Bakers 2006; Orchid Species of Peru Zelenko Bermudez 2009 photo fide; Mille et Une Mini Orchideees Roguenant 2009 photo fide; Orchid Digest Vol 80 #2 2016 as Gomesa longipes;