Epidendrum difforme Jacq. 1760 GROUP Difforme type Photo by © Eric Hunt and His Orchid Website
Another Flower Photo courtesy of Weyman Bussey, plant grown by Woodstream Orchids.
to 
MOSTLY LATE 
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Common Name Umbelled or Different Epidendrum
Flower Size less than 1 1/4" [less than 2.85 cm]
This is a variable sized, cold to warm growing, pendant or erect, caespitose, epiphytic species from the tropical Americas up to elevations of 3000 meters with numerous, leafy, flexuous stems enveloped completely by persistent sheaths carrying leathery to fleshy, oblong to elliptic-lanceolate, obtuse, basally clasping leaves and may bloom at any time during the year but mostly in the late spring and summer on a short, umbellate 1 to many flowered, racemose inflorescence subtended by a large spathe with fragrant, transluscent green or white flowers.
This species in a wide view includes many species that are now being split away. I have split some of these species away that I feel from personal observation visually seem different. These species include, Epidendrum apaganum, Epidendrum campacchii and Epidendrum umbelliferum each differing mostly in the form that the plant takes more than the flowers. See each individual species to see the differences.
Synonyms Amphiglottis difformis [Jacq.]Britt. 1924; Auliza difformis [Jacq.]Small 1913; Epidendrum arachnoideum Barb. Rodr. 1877; *Epidendrum difforme (Jacq.) Sw. 1760; Epidendrum radiatum Hoffmanns. 1842; Epidendrum virens Hoffmanns. 1841; Hormidium virens (Hoffmanns.) Brieger 1960;
References W3 Tropicos, Kew Monocot list IPNI ; Bonplandia Rchb.f 1854; Bonplandia Rchb.f 1856; Otia Botanica Hamburgensia Rchb.f 1878; Symbolae Antillanae Vol VI Orchidaceae Urban 1909; Repert. Sp. Nov. Regni. Veg. Beih. 19: 36. Costa Rica Schlechter 1923; Repert. Sp. Nov. Regni. Veg. Beih. 19: 119. Costa Rica Schlechter 1923; Repert. Sp. Nov. Regni. Veg. Beih. 19: 211. Costa Rica Schlechter 1923; AOS Bulletin Vol 27 No 6 1958; Native Orchids of Trinidad Schultes 1960; AOS Bulletin Vol 30 No 5 1961; Venezuelan Orchids Vol 2 Dunsterville & Garay 1961; AOS Bulletin Vol 31 No 3 1962; Flora de Venezuela Foldats Volumen XV Part 3 1970; AOS Bulletin Vol 49 No 5 1979 photo; Icones Planetarum Tropicarum Plate 098 Dodson 1980; Icones Planetarum Tropicarum Plate 560 Dodson 1982 as Neolehmannia apagana; Icones Planetarum Tropicarum Plate 1053 Dodson 1984 as Neolehmannia difformis; AOS Bulletin Vol 54 No 4 1985 photo; Icones Planetarum Tropicarum Plate 1317 Atwood 1989 see notes; AOS Bulletin Vol 68 No 2 1999 photo; Flora Novo-Galaciana Vol 16 McVaugh 1985; AOS Bulletin Vol 55 NO 3 1986 photo; The Orchids of Surinam Werkhoven 1986 photo fide; Icones Planetarum Tropicarum Series II Orchids of Peru Plate 0062 Dodson & Bennett 1989; Icones Orchidacearum I Plate 35 Hagsater and Salazar 1990 see recognition section; AOS Bulletin Vol 61 No 10 1992 drawing; Icones Orchidacearum 2 Plate 106 Hagsater 1993 see recognition section; Icones Orchidacearum 2 plate 114 Hagsater 1993; Icones Orchidacearum 2 Plate 133 Hagsater 1993 see recognition section; Icones Orchidacearum 2 The Genus Epidendrum plate 135 Hagsater 1993 see recognition section; Icones Orchidacearum 2 The Genus Epidendrum plate 138 Hagsater 1993 see recognition section; Icones Orchidacearum 2 Plate 143 Hagsater 1993 see recognition section; Icones Orchidacearum 2 Plate 144 Hagsater 1993 see recognition section; Icones Orchidacearum 2 Plate 153 Hagsater 1993 see recognition section; Icones Orchidacearum 2 Plate 157 Hagsater 1993 see recognition section; Icones Orchidacearum 2 Plate 167 Hagsater 1993 see recognition section; Icones Orchidacearum 2 Plate 170 Hagsater 1993 see recognition section; Icones Orchidacearum 2 Plate 182 Hagsater 1993 see recognition section; Icones Orchidacearum 2 Plate 185 Hagsater 1993 see recognition section; Icones Orchidacearum 2 Plate 191 Hagsater 1993 see recognition section; Icones Orchidacearum 3 Plate 321 Hagsater 1999 see recognition section; Icones Orchidacearum 3 Plate 306 Hagsater 1999 see recognition section; Icones Orchidacearum 3 Plate 327 Hagsater 1999 see recognition section; Icones Orchidacearum 3 Plate 342 Hagsater 1999 see recognition section; Icones Orchidacearum 3 Plate 346 Hagsater 1999 see recognition section; Icones Orchidacearum 3 Plate 356 Hagsater 1999 see recognition section; Icones Orchidacearum 3 Plate 365 Hagsater 1999 see recognition section; Icones Orchidacearum 3 Plate 377 Hagsater 1999 see recognition section; Icones Orchidacearum 3 Plate 386 Hagsater 1999 see recognition section; Icones Orchidacearum 4 Plate 401 Hagsater 2001 see recognition section; Icones Orchidacearum 4 Plate 429 Hagsater 2001 see recognition section; Orchids of Bolivia Vol 2 Laelinae Vasquez and Ibisch 2004; Icones Orchidacearum 7 Plate 757 Hagsater 2004 see recognition section; Icones Orchidacearum 7 Plate 781 Hagsater 2004 see recognition section; Icones Orchidacearum 7 Plate 788 Hagsater 2004 see recognition section; Icones Orchidacearum 7 Plate 796 Hagsater 2004 see recognition section; Icones Orchidacearum 7 Plate 800 Hagsater 2004 see recognition section; Orchids of The Brazilian Central Plateau Menezes 2004 photo fide; Icones Orchidacearum 8 Plate 826 Hagsater 2006 see recognition section; Icones Orchidacearum 8 Plate 842 Hagsater 2006 see recognition section; Icones Orchidacearum 8 Plate 827 Hagsater 2006; Icones Orchidacearum 8 Plate 878 Hagsater 2006 see recognition section; Icones Orchidacearum 8 Plate 888 Hagsater 2006 see recognition section; Icones Orchidacearum 8 Plate 896 Hagsater 2006 see recognition section; Orquideas de la Serrania del Baudo Misas Urreta 2006; Icones Orchidacearum Vol 11 Plate 1141 Hagsater & Sanchez 2008 see recognition section; Orchid Species of Peru Zelenko Bermudez 2009 photo fide
Difforme group - Over the years we have found a need to pare this broad definition down to it's present many species that differ in flower size, shape and structure or amount of; plant shape, size and structure; sessile to elongate, racemose to paniculate inflorescence; successive or not blooming; resupinate or non resupinate flowers etc
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