Epidendrum althausenii A.D.Hawkes 1957 GROUP Difforme

Photo by © Aurélien Sambin and The Epidendrum du Groupe Difforme de Guyane Website

Drawing Drawing by R Jimenez and AMO Herbaria Website

Common Name Althausen's Epidendrum

Flower Size 2" [5 cm]

Found in Amazonas state of Brazil and French Guiana as a mini-miniature to small sized, hot growing, caespitose epiphyte with an ancipitous, simple, ancipitose, somewhat flexuose stem carrying 3 to 6, all along the stem, subcoriaceous, elliptic to ovate, retuse, unornamented, green leaves that blooms in the fall and winter on a terminal, sessile, simultaneously 1 rarely 2 to 3 flowered inflorescence with smaller than the ovary floral bracts carrying resupinate, glabrous, green flowers.

"Epidendrum althausenii A. D. Hawkes, an amazonian species, belongs to the Epidendrum difforme Jacq. group and can be recognized by the subcuadrate lip, semiovate lateral lobes, without deep sinus, emarginate midlobe, and a straight column. Epidendrum cremersii has lateral compressed stems, trapezoid, 3-lobed lip, ovate lateral lobes, surpasing the very small, bilobed midlobe, subrectangular, divergent lobes, arcuate column, prominent, erose clinandrium. E. barbeyanum from Costa Rica and Panama, has a transversally elliptic lip, dolabriform lateral lobes, straight column, and reduced clinandrium. Epidendrum oldemanii E. A. Christenson also from Central French Guiana has graduating in size towards the apex leaves, small flowers, with sepals .56 to .66" [14 to 16.5 mm] long, single veined petals and a transversely reniform-bilobulate lip." Adapted from E creamersii Icones Plate 327 Hagsater etal 1999

Synonyms Epidendrum uniflorum Barb.Rodr. 1877 nom illegal

References W3 Tropicos, Kew Monocot list , IPNI ; Icones Orchidacearum 3 Plate 327 Hagsater & Sanchez 1999 see recognition section; Icones Orchidacearum 3 Plate 377 Hagsater 1999 see recognition section; Icones Orchidacearum 7 Plate 788 Hagsater and Sanchez 2004 see recognition section; Icones Orchidacearum 8 Plate 811 Hagsater and Sanchez 2006 see recognition section; Icones Orchidacearum Vol 8 Plate 826 Hagsater & Sanchez 2006 see recognition section; Icones Orchidacearum Vol 8 Plate 896 Hagsater & Sanchez 2006 see recognition section; Icones Orchidacearum 12 Plate 1207 Hagsater 2009 see Drawing fide; Icones Orchidacearum 12 Plate 1249 Hagsater 2009 see recognition section; Icones Orchidacearum 14 Plate 1473 Hagsater & Sanchez 2013 see recognition section; Richardiana Vol 2 Synopsis des espèces d'Epidendrum (Orchidaceae) de Guyane. 2- Groupe « Difforme » Aurélien Sambin, Diana Essers & Guy R. Chiron 02/26/2016 [https://www.researchgate.net/publication/323998119_Synopsis_des_especes_d'Epidendrum_Orchidaceae_de_Guyane_2-Groupe_Difforme#pf8]

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