Elleanthus arpophyllostachys (Rchb.f.) Rchb.f. 1862 SUBGENUS Calelyna SECTION Calelyna Szach & Dudek 2023
Photo by © Lourens Grobler and his Flickr Orchid Photo Website
Drawing by © Dunsterville & Garay
Common Name The Arpophyllum-Like Elleanthus [refers to its similarity to an Arpophyllum]
Flower Size .32" [8 mm]
Found in Distrito Federal state of Venezuela, Magdalena, Cauca and Putumayo departments of Colombia and Pichincha and Esmeraldas provinces of Ecuador in extremely wet montane forests at elevations of 600 to 1900 meters as a medium to just large sized sized, warm to cool growing terrestrial with stiffly erect stems that are leafless below and leafy above, carrying loosely several, subcoriaceous, strigose-punctate beneath, plicate, lanceolate, acute, long acuminate, abruptly narrowing below into the basally clasping leaves that blooms at most any time of the year on a terminal, sessile, elongate rachis, arcuate-recurved, slightly longer than the terminal leaf, spirally arranged, elongate, 3.2" [8 cm] long, densely many flowered inflorescence carrying orange flowers with cymbiform, ovate, longer than the ovary obtuse bracts.
"Similar to E wageneri but it has glabrous, rather dull greenish yellow flowers with an orange reddish spot on the lip and a purple anther while E arpophyllostachys has showy, orange red to golden yellow flowers. E wageneri has somewhat larger flowers with a single callus on the lip, attenuate towards the apex and sulcate on the dorsal surface. The lip callus of E arpophyllostachys is a pair of approximate corpuscles which are rounded at the apices." Szlatchetko & Kolanowska 2023
Synonyms Elleanthus attenuatus J.R.Johnst. 1905; *Evelyna arpophyllostachys Rchb.f. 1854
References W3 Tropicos, Kew Monocot list , IPNI ;
Bonplandia (Hannover) 2: 21 Rchb.f 1854 as Evelyna arpophyllostachys;
*Ann. Bot. Syst. 6: 479 Rchb.f 1862;
Proc. Amer. Acad. Arts 40: 684 J R Johnst. 1905 as E attenuatus
Flora Brasilica Vol XII II 13-43 Hoehne 1945;
Flora Brasilica Vol XII II 13-43 Hoehne 1945 as E attenuatus;
Venezuelan Orchids Illustrated Vol 2 Dunsterville & Garay 1961 Drawing fide;
Flora de Venezuela Volumen 15 Parte 1 Foldats 1969 drawing fide;
Flora of Ecuador No 9 225[1] Garay 1978 drawing fide;
AOS Bulletin Vol 48 # 7 1979 photo fide;
Icones Plantarum Tropicarum Plate 058 Dodson 1980 darwing good;
Native Ecuadorian Orchids Vol 2 Dodson 2001 drawing/photo fide;
Flora of the Venezuelan Guyana Vol 7 Steyermark, Berry, Yatskievych and Holst 2003;
Orquideas de la Serrania del Baudo Choco Colombia Misas 2005 drawing/photo fide;
Flora of Ecuador No 87 225[3] Orchidaceae Dodson & Luer 2010;
Materials to the Orchid Flora of Colombia Vol IV:264 Szlatchetko & Kolanowska 2023 drawing fide
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