!Acacallis cyanea Lindley 1853 Photo by Gustavo Righelato

Flower Closeup Photo by Lourens Grobler

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Common Name The Dark Blue Acacalis

Flower Size 2 1/2" [6.25 cm]

A small sized, hot growing epiphytic plant with fusiform, slightly compressed, rugose pseudobulbs covered with papery bracts and with a single to two coriaceous, oblong-lanceolate, short petiolate leaves, a visible, creeping, slender rhizome and a 12" [30 cm] long, basal, slender inflorescence that is slightly longer than the leaves and arises from the base of a mature pseudobulb and is erect to arching, carries loosely few to several [to 10] showy, fragrant flowers and blooms in the late winter until summer mostly in the late spring. They are found in Colombia, Venezuela and Brazil at elevations of 100 to 500 meters as a small sized, hot growing epiphyte and rarely terretrial with an ascending growth habit and as such does well on tree fern or cork slabs. In nature these plants are often found semi-submerged by flooding rivers in the Amazon area with only the flowers above the water line. This orchid will thrive if given a hot, humid environment with lots of shade or dappled sunlight and room for the plant to expand. Daily mistings while in growth are greatly appreciated.

Synonyms Acacallis coerulea (Rchb. f.) Schltr. 1918; Acacallis cyanea f. alba Roeth & O.Gruss 2006; Acacallis hoehnei (Hoehne) Schltr. 1918; Acacallis oliveriana (Rchb. f.) Schltr. 1914; Aganisia coerulea Rchb.f 1876; Aganisia cyanea Rchb.f not Benth. 1869; Aganisia cyanea f. alba (Roeth & O.Gruss) Meneguzzo 2015; Aganisia oliveriana Rchb. f. 1878; Aganisia tricolor NE Br. 1885; Kochiophyton caeruleum Hoehne 1910; Kochiophyton coeruleus Hoehne 1906; Kochiophyton coeruleus Hoehne 1910; Kochiophyton negrense Schlechter 1906

References W3 Tropicos, Kew Monocot list , IPNI ; Lankester's Epidendra Website CR ; *Fol. Orchid. 4 (Acacallis): 1. 1853; Die Orchideen Schlechter 1915; Atlas des Orchidees Cultivees Constantin 1920 drawing not; Flora Brasilica Vol XII VII 115-147 Hoehne 1953 drawing ok; AOS Bulletin Vol 26 No 2 1957; AOS Bulletin Vol 27 No 1 1958 drawing as A coerulea; AOS Bulletin Vol 30 No 7 1961 photo as Aganisia cyanea; Venezuelan Orchids Vol 2 Dunsterville & Garay 1961 as Aganisia cyanea drawing fide; Encylopedia of Cultivated Orchids Hawkes 1965; Flora de Venezuela Foldats Volumen XV Part 4 1970 as Aganisia cyanea drawing fide; Orchidaceae Brasilienses Vol 2 Pabst - Dungs 1977; Orchids of Venezuela [An illustrated field guide] Vol. 1 Dunsterville and Garay 1979 drawing fide; Orchid Digest Vol 44 No 6 1980 as Aganisia cyanea photo fide; Orchid Digest Vol 47 No 3 1983 photo fide; AOS Bulletin Vol 53 No 1 1984 photo; Simon & Schuster's Guide to Orchids Fanfani & Rossi 1988; Native Colombian Orchid Vol 1 COS 1990 photo fide; Manual of Cultivated Orchids Bechtel, Cribb, Laurent 1992; The Illustrated Encyclopedia of Orchds Pridgeon 1992; Die Orchideen lieferung 28 Schlechter/Brieger 1993 drawing/photo hmm; Manual of Orchids Stewart 1995; Venezuela; Paraiso de Orquideas Romero 1997 photo fide; Orchids of Venezuela [An illustrated field guide] Vol. 1 Ramiro and Carnevali 2000 drawing fide; Flora of the Venezuelan Guayana Vol 7 Steyermark, Berry, Yatskievych and Holst 2003; Flora's Orchids Nash and La Croix 2005; AOS Bulletin Vol 74 No 8 2005 photo; AOS Bulletin Vol 74 No 12 2005 photo; AOS Bulletin Vol 75 No 7 2006 drawing; Orchid Species of Peru Zelenko Bermudez 2009 photo fide as Aganisia cyanea; Orquideas de Roirama Luz & Franco 2012 as Aganisia cyanea photo hmm;

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