Oncidium zappii

Oncidium zappii Zappi’s Oncidium

Zappi's Oncidium, Oncidium zappii

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Oncidium zappii Pabst 1976 SECTION Crispa Photo courtesy of Jay Pfahl

Common Name Zappi’s Oncidium [Brazil Orchid Enthusiast current]

Flower Size 2″ [5 cm]

Found in Espiritu Santo state Brazil and Paraguay at elevations around 900 meters as a small sized, warm to cool growing epiphyte with cylindric, laterally compressed pseudobulbs enveloped in youth by several pairs of leafless and leaf-bearing, deciduous sheaths and carrying a single, apical, linear-elliptical, conduplicate below into the petiole-like base that blooms in the late spring on a 10 to 12″ [25 to 30 cm] long, simple to paniculate, few to several flowered inflorescence arsing on a matured pseduobulb and having fairly shoret branches when present and carrying scentless flowers.

Synonyms Anettea zappii (Pabst) Szlach. & Mytnik 2006; Brasilidium zappii (Pabst) Campacci 2006

Oncidium widgrenii

Oncidium widgrenii Widgren’s Oncidium

Widgren's Oncidium, Oncidium widgrenii

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Oncidium widgrenii Lindl. 1855 SECTION Waluewa Photo courtesy of Jay Pfahl

Common Name Widgren’s Oncidium [Swedish Plant Collector 1800’s]

Flower Size 1″ [2.5 cm]

Found in southeastern Brazil, Paraguay and Argentina in cool moist montane forests and drier, warm savannahs at elevations of 200 to 400 meters as a small sized, cool growing epiphyte with clustered, thicker in the middle pseudobulbs and carrying a single, rigid, acute, narrowly oblong leaf that blooms in the summer on a basal, slender, suberect to nodding, racemose to paniculate, several flowered inflorescence arising on a matured pseudobulb.

Synonyms Baptistonia widgrenii (Lindl.) V.P.Castro & Chiron 2004; Oncidium odontochilum Barb. Rodr. 1881

 

Oncidium welteri

Oncidium welteri Welter’s Oncidium

Welter's Oncidium, Oncidium welteri

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Oncidium welteri Pabst 1956 SECTION Synsepala Photo by © Americo Docha Neto , courtesy © Orchidstudium

Part shade Warm Cool LATE Spring Summer

Common Name Welter’s Oncidium [Brazilian Preist and Discoverer of species 1900’s]

Flower Size 1/2″ [1.25 cm]

Found in Sao Paulo State of Brazil as a miniature sized, warm to cool growing epiphyte with very little available information but the plant has conic, slightly compressed pseudobulbs enveloped by imbricate, triangular-lancoelate sheaths and carying 2, linear-oblong to oblong to strap shaped, obtuse, gradually narrowing below into the conduplicate base leaves that blooms in the late spring and early summer on an erect to somewhat nodding, 4″ [10 cm] long, paniculate, few branched, few to several flowered inflorescence arising on a mature pseudobulb and carrying scentless flowers.

Synonyms Ampliglossum welteri (Pabst) Campacci 2006; Coppensia welteri (Pabst) Campacci 2006

Oncidium warszewiczii

Oncidium warszewiczii Warszewicz’ Oncidium

Warszewicz' Oncidium, Oncidium warszewiczii

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Oncidium warszewiczii Rchb.f. 1852 SECTION Synsepala

part Shade Cool Cold Summer Fall

Common Name Warszewicz’ Oncidium [German Orchid Collector South Amewrica 1800’s]

Flower Size .6″ [1.5 cm]

Found in Panama in premontane to montane cloudforests at elevations around 2000 to 3100 meters as a small sized, cool to cold growing epiphyte with ovate-elliptic, laterally compressed, ancipitous pseudobulbs enveloped basally by 2, leaf-bearing sheaths and carrying 2, apical, erect, lanceolate, unequally bilobed apically, gradually narrowing into the conduplicate, shortly petiolate base leaves that blooms in the summer through fall on an ascending, racemose, nodding above, 16″ [40 cm] long, 8 to 12 flowered inflorescence with 7 to 10 close bracts and carrying scentless flowers

Oncidium warmingii

Oncidium warmingii Warming’s Oncidium

Warming's Oncidium, Oncidium warmingii

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Oncidium warmingii Rchb. f. 1881 SECTION Synsepala Photo courtesy of Dalton Holland Baptista

Part shade Warm to Cold Fall

Common Name or Meaning Warming’s Oncidium [Danish Orchid Collector 1800’s]

Flower Size .8″ [2 cm]

Found in La Caraça – Pic Da Carapuça – Minas Gerais, Brazil and Venezuela in oipen rocky places, shrublandws and rarely in forests at elevations around 800 to 2700 meters as a small sized, warm to cold growing terrestrial or lithophyte with cylindrical, smooth, slightly to strongly compressed and lightly grooved with age pseudobulbs with an occasional basal leaf-bearing sheath and carrying 2, apical, light green, acute, lanceolate, thin, stiff leaves that blooms in the fall on a basal, erect, paniculate, to 39″ [100 cm] long, many flowered inflorescence arising on a mature pseudobulb with 3 to 4, short, loosely 3 to 7 flowered branches and carrying scentless flowers.

Synonyms Ampliglossum warmingii (Rchb.f.) Campacci 2006; Coppensia warmingii (Rchb.f.) Campacci 2006; Oncidium gomesii Cogn. 1906; Oncidium vagans C. Schweinf. 1958

Oncidium variegatum

 Oncidium variegatum Variegated Oncidium 

Variegated Oncidium  , Oncidium variegatum

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Tolumnia variegata (Sw.) Braem 1986

Common Name The Variegated Oncidium

Flower Size 1″ [2.5 cm]

Found on the island of Hispanola and Cuba as an equitant, creeping, epiphytic miniature found in dry scrub, woods or fence posts from sealevel to 700 meters with very short, erect stems enveloped by 4 to 10, imbricate, disitichous, fleshy to coriaceous, bilaterally flattened, channeled on the upper side, linear to elliptic-lanceolate, falcate, acute to acuminate, serrulate leaves that blooms on an erect, simple or branched, to 32″ [to 80 cm] long, laxly few flowered inflorescence that has lanceolate, acute bracts and has new branches and flowers appearing after the first blooms all occuring in the spring, summer and fall with 1″ flowers that are fragrant and long-lasting. I have the best luck mounting these miniature beauties to small branches, giving them medium light and plenty of air circulation.

Synonyms Cymbidium variegatum (Sw.) Sw. 1799; Epidendrum carinatum Vahl 1793; Epidendrum haseltonianum A.D.Hawkes 1957; *Epidendrum variegatum Sw. 1788; Oncidium × furcyense Moir 1969; Oncidium variegatum [Sw.]Willd. 1800; Oncidium variegatum f. furcyense (Moir) Withner 1980; Oncidium variegatum f. roseum (Moir & A.D.Hawkes) Withner 1980; Oncidium variegatum f. varvelum (Moir) Withner 1980; Oncidium variegatum var. purpureum Moir & A.D.Hawkes 1968; Oncidium variegatum var. roseum Moir & A.D.Hawkes 1968; Oncidium × varvelum Moir 1972; Tolumnia borinquensis Salueda & Ragan 1966

Oncidium triquetrum

Oncidium triquetrum Triangular Tolumnia

Triangular Tolumnia , Oncidium triquetrum

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Tolumnia triquetra (Sw.) Nir 1994 Photo by © Eric Hunt and his Flicker Orchid Photostream

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

 

Oncidium trilobum

Oncidium trilobum Three-Lobed Oncidium

Three-Lobed Oncidium , Oncidium trilobum

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Oncidium trilobum [Schlechter] Garay & Stacy 1974 SECTION Stellata Photos courtesy of © Lourens Grobler

Common Name The Three-Lobed Oncidium

Flower Size 2″ [5 cm]

Found in Peru and Bolivia in wet montane forests at elevations of 250 to 1600 meters as a large sized, hot to cool growing epiphyte with a short rhizome carrying an ovoid, flattened, sulcate pseudobulb enveloped basally by distichous, foliaceous sheaths and carrying 2 apical, strap-shaped, green leaves that has a basal, arcuate, weakly paniculate, 3’4″ [100 cm] to 10′ [300 cm] inflorescence arising on an mature pseudobulb from the lateral leaf axils and occuring in the summer.

Very closely related to if not synomonous with Oncidium aurarium, I have left them separate for now. If they are the same orchid then Oncidum aurarium would take prescendence.

Synonyms *Odontoglossum trilobum Schlechter 1921

Oncidium trichodes

Oncidium trichodes Hairy Oncidium

Hairy Oncidium , Oncidium trichodes

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Oncidium trichodes Lindl. 1855 SECTION Barbata Photo courtesy of Dario Melgar

Common Name or Meaning The Hairy Oncidium

Flower Size 1″ [2.5 cm]

Found in Para’ State Brazil and Bolivia in hot lowlands around 400 meters in elevation as a miniature sized, hot to warm growing epiphyte with ovate, laterally compressed, ancipitous, longitudinally grooved pseudobulbs enveloped basally by several, imbricating, leafless sheaths and carrying a single, erect, acute, narrowly conduplicate below into the petiole-like base leaf that blooms in the winter on a basal, erect, 5″ [12.5 cm] long, paniculate inflorescence that arises on a newly matured pseudobulb and has fractiflex branches all held towards the apex.

Synonyms Alatiglossum trichodes ( Lindl. ) Baptista 2006; Oncidium barbatum Lindl. & Paxton 1851

Oncidium toachicum

Oncidium toachicum Toachi Oncidium

Toachi Oncidium, Oncidium toachicum

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Oncidium toachicum Dodson 1980 SECTION Toachica Photo courtesy of Lourens Grobler ©

Common Name The Toachi Oncidium [A river In Ecuador]

Flower Size 5/8″ [1.4 cm]

Found in Ecuador in very wet, montane cloud forests at elevations of 500 to 1400 meters as a small sized, hot to warm growing epiphyte with oblong, compressed pseudobulbs enveloped basally by several distichous, conduplicate sheaths with the uppermost few being leaf bearing and carrying a single, apical, linear-oblong, acute leaf that is narrowing towards the base into a conduplicate petiole that blooms in the fall on an erect, paniculate, several to many flowerd, 22″ [55 cm] long inflorescence that has many, short branches each subtended by a tubular bract and carrying 3 to 5, faintly fragrant flowers that are often self-pollinating .