Epidendrum oldemanii Christenson 1994 GROUP Difforme

TYPE Drawing by © Bobby Angel

Fragrant Partial sun Hot LATERSpring

Common Name or Meaning Oldeman's Epidendrum {Dutch Botanist and Director and founder of the Herbarium of Cayenne at the Institut de Recherche]

Flower Size 1" [2.5 cm]

Found in French Guiana in the Atlantic lowlands forest canopy at elevations of 200 to 350 meters as a miniature sized, hot growing epiphyte with a simple, cane-like, strongly laterally compressed, flexuous stem carrying 3 to 5, along the apical 2/3rds of the stem, narrowly elliptic to ovate-elliptic, bilobed apically, margin entire, spreading, coriaceous, light green leaves that blooms in the later spring on an apical, arising on a mature pseudobulb, peduncle inconspicuous, sub-umbellate, sub-sessile, simultaneously 2 flowered inflorescence with much shorter than the ovary floral bracts and carrying resupinate, fragrant, yellow green flowers.

"Epidendrum oldemanii belongs to GROUP Difforme which is characterized by the caespitose, sympodial plants, fleshy, pale green to glaucous leaves, apical inflorescence, sessile, rarely with a short peduncle, single flowered to corymbose, without spathaceous bracts, fleshy, green to yellowish-green rarely white flowers. The species can be recognized by the small plants, stems strongly laterally compressed, leaves elliptic to ovate-elliptic, with 2 simultaneous, yellow-green flowers, the lip bilobed, lobes obovate, margin sinuous, calli small, sub-globose. It is similar to Epidendrum sertorum Garay & Dunsterv., a species occuring in Colombia and Venezuela, the inflorescence with 7 flowers, a cordiforme lip, acute apex and the disc with numerous thickened veins. Epidendrum amapense Hágsater & L.Sánchez which grows in the French Guyana and northeastern Brazil, but that species has narrow leaves, and a 3-lobed lip." Hagsater etal 2015


References W3 Tropicos, Kew Monocot list , IPNI ; Icones Orchidacearum 3 Plate 327 Hagsater & Sanchez 1999 see recognition section; Icones Orchidacearum 3 Plate 346 Hagsater & Sanchez 1999 see recognition section; Icones Orchidacearum Vol 8 Plate 826 Hagsater & Sanchez 2006 see recognition section;Icones Orchidacearum 12 Plate 1208 Hagsater 2009 see recognition section; Orchids of French Guiana Szlachetko, Veyret, etal 2012 drawing fide; Icones Orchidacearum 14 Plate 1404 Hagsater & Santiago 2013 See recognition section; Icones Orchidacearum 15 [1] Plate 1548 Sanchez & Hagsater 2015 drawing/photo fide; Richardiana Vol 2 Synopsis des espčces d'Epidendrum (Orchidaceae) de Guyane. 2- Groupe « Difforme » Aurélien Sambin, Diana Essers & Guy R. Chiron 02/26/2016;