Odontoglossum ariasii Dalström 2001 SECTION Lobulatum SERIES Astranthumm
Photos © courtesy of Ron Maunder and Paradise Orchid Nurseries
LATER
Common Name Arias' Odontoglossum [Peruvian nurseryman - current]
Flower Size 1.2" [3 cm]
Found in Pasco, Junin and Cusco departments of Peru in upper elevation wet cloud forests at elevations around 2200 to 2800 meters as a medium sized, cold growing epiphyte with narrowly ovoid, slightly laterally compressed, ancipitous pseudobulbs enveloped basally by 6 to 8 disitichous, imbricating, conduplicate, lower leafless, upper leaf-bearing sheaths and carrying two, strap-shaped, to elliptic, to elongate-obovate, erect to arching, acute, gradually tapering below into the elongate, conduplicate, narrow, petiolate base leaf that blooms in the later spring and summer on a basal, erect to suberect, paniculate, arising from axils of the basal leaf sheath with 8 to 10 weakly flexuous branches, held towards the apex, at right angles to the main stem, all on 5 to 7 flowered branches, 20 to 24" [50 to 60 cm] long, many flowered inflorescence with apressed, scale-like, longer to shorter than the ovary floral bracts and carrying stellate flowers.
Synonyms Collare-stuartense ariasii (Dalström) Szlach. & Kolan. 2015; Oncidium manuelariasii Chase & NH Wms. 2008
References W3 Tropicos, Kew Monocot list , IPNI ; Orchid Species Culture, Oncidium Bakers 2006; AOS Bulletin Vol 77 No 12 2008 as Oncidium manuelariasii; Orchid Species of Peru Zelenko Bermudez 2009 photo fide; The Odontoglossum Story Dalstrom, Higgins & Deburghgraeve 2020 photo/drawing fide
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