Epidendrum circinatum Ames 1924 GROUP Spathiger SUBGROUP Circinatum type Photo by Franco Pupulin.

Part Shade Hot Warm Spring

Common Name The Curled Epidendrum

Flower Size .6 to 7/8" [1.4 to 2.2 cm]

Found in Costa Rica, Panama and Colombia at elevations around 300 to 1000 meters as a medium to large sized, hot to warm growing epiphyte with terete at the base, compressed above stems enveloped in youth by amply loose, appressed sheaths and carrying 2 to 3, approximate, jointed, oblong to elliptic-oblong, coriaceous, bilobed apically, obliquely ascending leaves that blooms in the spring on a terminal, complanate, alate, to 9.2" [to 23 cm] long, to 13 flowered inflorescence subtended by conduplicate sheaths with decurrent keels.

The syn E concavilabium - Colombia seems by the photo and drawing available in Orquideas de la Serrania del Baudo Misas 2006 to be substantially different, not only in the non curled lateral sepals and petals but in the shape of the lip which has no central folding, no erose margins and is much more bowl-like. More study needs to be done. This species is found at low elevations in primary forest and has medium sized, flattened stems completely enveloped by clasping sheaths many carrying liner, coriaceous, bilobed apically, conduplicate and clasping basally leaves that blooms in the spring on a terminal, erect, flattened inflorescence enveloped completely by imbricate, acute floral bracts from which the rigid, coriaceous, waxy, 1" [2.5 cm], wide open, racemose flowers, arise showing only the flower, with the ovary hidden.

The wide leaves, the non-resupinate flowers with the tepals recurved, a pub-pandurate, incurved lip that forms 90 degree angle to the column and inflated ovary distinguish this species from others.

Synonyms Epidendrum concavilabium C.Schweinf. 1937

References W3 Tropicos, Kew Monocot list , IPNI ; Lankester's Epidendra Website CR ; *Sched. Orch. 7: 4. 1924; The Genus Epidendrum Ames 1936; Ceiba Vol 5 No 1 L O Williams 1956; AOS Bulletin Vol 38 No 3 1969 photo fide; Field Guide to the Orchids of Costa Rica and Panama Dressler 1993; Icones Planetarum Tropicarum plate 1522 Atwood 1993 drawing fide; Icones Orchidacearum 2 Plate 174 Hagsater & Sanchez 1993 see recognition section; Icones Orchidacearum 3 Plate 395 Hagsater & Sanchez 1999 see recognition section; Manual de las Plantas de Costa Rica Vol 3 Hammel, Grayum, Herrera and Zamora 2003 drawing fide; Icones Orchidacearum 7 Plate 738 Hagsater & Sanchez 2004; Vanishing Beauty, Native Costa Rican Orchids Pupulin 2005 photo fide; AOS Bulletin Vol 75 No 2 2006 photo fide; Orquideas de la Serrania del Baudo Misas Urreta 2006 as E concavilabium; Icones Orchidacearum Vol 11 Plate 1111 Hagsater & Sanchez 2008 drawing fide; Orchids of Costa Rica Vol 3 Morales 2009 photo fide;