Trisetella tenuissima (C.Schweinf.) Luer 1980 SECTION Trisetella SUBSECTION Calvicaulis Luer 1989

Photo by Sebastian Viera and his Flickr Orchid Photo Website

Side View of Another Flower

Photo by R Jenny and The Swiss Orchid Foundation at the Jany Renz Herbaria Website

TYPE Drawing of M butcheri

Drawing by Carl Luer

Common Name The Very Thin Trisetella [refers to the leaves and flowers]

Flower Size .2" [5 mm]

Found in Cocle and Panama provinces of Panama and the western cordillera of Antioquia department of Colombia at elevations of 400 to 1200 meters as mini-miniature sized, hot to cool growing epiphyte with erect ramicauls enveloped by 2 to 3, thin, tubular sheaths and carrying a single apical, erect, coriaceous, narrowly elliptical, acute to subacute apically, gradually narrowing below into the base leaf that blooms in the fall through spring on a filiform, erect, arising from low on the ramicaul smooth, with a bract below the middle, .8 to 1.12" [2 to 2.8 cm] long, congested, successively single, 3 to 5, flowered inflorescence with shorter than the pedicel floral bracts.

"The little pale yellowish flowers with short, thick tails are prominently striped with purple. Together the lateral sepals are not as wide as the dorsal sepal and the tails are produced from the apices." Luer 1989

Synonyms Masdevallia butcheri Luer 1976; *Masdevallia tenuissima C.Schweinf. 1937; Triaristella tenuissima (C.Schweinf.) Luer 1978; Triaristellina tenuissima (C.Schweinf.) Rauschert 1983

References W3 Tropicos, Kew Monocot list , IPNI ;

Bot. Mus. Leafl. 4(7): 111. Schweinfurth 1937 as Masdevallia tennuisima ;

* Phytologia 47[2]: 58 1980;

The Orchids of Panama L.O. Williams & P Allen 1946 as Masdevallia tenuissima;

* Selbyana Vol 3 16 Luer 1976 as Masdevallis butcheri Drawing fide;

* Phytologia 47: 58 1980; Icones Pleurothallidinarum Vol VI Systematics of Pleurothallis subgen Ancipita, Scopula and Trisetella Luer 1989 drawing fide;

Orchids Masdevallia with its segregates including Dracula Zelenko 2014 photo fide;