Stelis pachyrrhiza Luer & R.Vásquez 1981 SECTION Stelis

TYPE Drawing by © Carl Luer and Selbyana 32(1,2): 81 Luer & Vasquez 2018


Common Name The Thick Rooted Stelis

Flower Size .12" [3 mm]

Found in La Paz department of Bolivia at elevations around 2700 to 3000 meters as a miniature sized, cool growing, caespitose lithophyte or terrestrial with erect, relatively stout ramicauls with a loose tubular sheath from near the middle and 2 to 3 others below and at the base and carrying a single, apical, erect, coriaceous, elliptcal, acute to subacute, narrowing below into the petiolate base leaf that blooms in the later spring and summer on 1 to 5, erect, arising through a spathe from a node below the apex of the ramicaul, peduncle 1.6 to 2.4" [4 to 6 cm] long, rachis 1.2 to 9.6" [3 to 24 cm] long, erect, congested, distichous, successively 5 to 7, many flowered inflorescence with obliqe, acute, shorter than the ovary floral bracts and carrying flowers with yellow-green sepals, dark purple petals and lip .

" This caespitose, medium-sized species, remarkable for the thick, fleshy roots, grows lithophytically and terrestrially at an altitude of 2700–3000 meters above sea level. Up to five simultaneous, many-flowered racemes exceed an elliptical leaf. Only a few flowers open while buds are maturing above. The sepals are ovate and obtuse; the petals are three-veined; and the type A lip is rounded at the apex, and concave before the bar with a small glenion." Luer & Vasquez 2018


References W3 Tropicos, Kew Monocot list , IPNI ;

* Phytologia 49: 233 Luer 1981

Orchidaceae Stelis Swartz A Compendium Duque 2008 drawing fide;

Selbyana 32(1,2): 81 Luer & Vasquez 2018;

Selbyana 32(1,2): 150 Luer & Vasquez 2018 Drawing fide;