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

to to

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;

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