Stelis lamellata Lindl. 1837 SECTION Stelis
Photo by © Alexander Hirtz
Drawings by © Carl Luer
Common Name The Lamellate Stelis [refers to the plate-like calli of the lip]
Flower Size .2" [5 mm]
Found in Cauca department of southern Colombia and Pichincha, Imbabura, Cotopaxi, Napo, Bolivar, Chimborazo, Morona-Santiago and Zamora-Chinchipe provinces of Ecuador at elevations around 3000 to 3400 meters as a miniature sized, cold growing, ascending, caespitose epiphyte, lithophyte or terrestrial with erect, slender, fasciculate ramicauls enveloped 3 to 4, ribbed tubular sheath and carrying a single, apical, erect, coriaceous, narrowly elliptical, acute to subacute, gradually narrowed below into the petiolate base leaf that blooms in the summer and fall on an erect, congested, secund, 4 to 8.8" [10 to 22 cm] long including the 1.2 to 2" [3 to 5 cm] peduncle, simultaneously several flowered inflorescence arising from an annulus below the apex of the ramicaul with oblique acute, just shorter to as long as the ovary floral bracts.
The plant is characterized by the ascending habit with fasciculateramicauls. Small portions of the plant often appear caespitose. The secund inflorescence is about twice the length of the narrowly elliptical leaves. The flowers are distinguished by the connation of the sepals below the middle into a distinct, sepaline tube with the free portions directed forward often with revolute margins. The central apparatus is not readily visible within the sepaline tube. The petals are cuneate, truncate and single veined with a marked thickening externally at the apex." Luer 2009
Synonyms Dialissa concaviflora (C.Schweinf.) Brieger 1976; Stelis altigena Schltr. 1921; Stelis arevaloi Schltr. 1924; Stelis calyculata Garay 1979; Stelis concaviflora C.Schweinf. 1942; Stelis millei Schltr. 1915;
References W3 Tropicos, Kew Monocot list , IPNI ;
* Hooker's Icon. Pl. 1: t. 62 Lindley 1837
* Hooker's Icon. Pl. 1: t. 62 Lindley 1837 Drawing fide
Repert. Spec. Nov. Regni Veg. 14: 122 Schlechter 1915 as S millei
Repert. Spec. Nov. Regni Veg. Beih. 8: 51 Schlechter 1921 as S altigena
Repert. Spec. Nov. Regni Veg. Beih. 27: 25 Schlechter 1924 as S arevaloi
Bot. Mus. Leafl. 10: 115 C Schweinfurth 1942 as S concaviflora
Orchids of Peru Vol 1 Schweinfurth 1958 as S concaviflora
Orchids of Peru Vol 1 Schweinfurth 1958 drawing ok;
Fieldiana Botany Vol 33 1st Supplement to the Orchids of Peru Schweinfurth 1970;
Die Orchideen 3 Auflage Bd 1 Sonderabdruck aus Schlechter Lieferung 8 449 - 512 Brieger, Maatsch and Senghas 1976 as Dialyssa concaviflora;
Bot. Mus. Leafl. 27: 183 Garay 1979 as S calyculata
Native Ecuadorian Orchids Vol 5 Dodson 2004 as S arevaloi photo ok;
Orchidaceae Stelis Swartz A Compendium Duque 2008 as S arevaloi; drawing fide;
Orchidaceae Stelis Swartz A Compendium Duque 2008 as S calyculata drawing fide;
Orchidaceae Stelis Swartz A Compendium Duque 2008 as S concaviflora drawing fide;
Orchidaceae Stelis Swartz A Compendium Duque 2008 drawing fide;
Orchidaceae Stelis Swartz A Compendium Duque 2008 as S millei drawing hmm;
Icones Pleurothallidinarum Vol XXX Lepanthes of Jamaica Stelis of Ecuador Part IV Luer 2009
Icones Pleurothallidinarum Vol XXX Lepanthes of Jamaica Stelis of Ecuador Part IV Luer 2009 drawing fide;
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