Dichromanthus aurantiacus (Lex.) Salazar & Soto Arenas 2002

Flower Closeup

Side View of Flower Closeup

Plant in situ in Mexico

Photos by Weyman Bussey

Common Name The Orange Colored Dichromanthus

Flower Size .4" [1 cm]

Found in Chihuahua, Durango, Sinaloa, Nayarit, Aguas Caliente, Guanajuato, Jalisco, Colima, Michoacan, Guerrero, Mexico, Morelos, District Federal, Oaxaca, Puebla, Vera Cruz, Hidalgo, San Luis Potosi, Nuevo Leon and Chiapas states of Mexico, Guatemala, El Salvador and Honduras in wet montane forests on slopes under pines, in meadows, pastures and open grassy places at elevations of 800 to 3000 meters as a small to giant sized, warm to cold growing terrestrial orchid with a leafy stem completely enveloped by wide, inflated leaf bearing sheaths that clsp the stem carrying green, small below, larger in the mid section and smaller above, ovate-orbicular, acute, basally clasping leaves that blooms in the summer on a terminal, 5" [12.5 cm] long, 10 to 15 flowered, racemose inflorescence with densely pubescent floral bracts.

Synonyms Gyrostachys aurantiaca (Lex.) Kuntze 1891; Gyrostachys lupulina (Lindl.) Kuntze 1891; *Neottia aurantiaca Lex. 1825; Ophrys pubescens Sessé & Moç. 1890; Spiranthes aurantiaca (Lex.) Hemsl. 1884; Spiranthes aurantiaca var. acuminata B.L.Rob. & Seaton 1893; Spiranthes lanuginosa A.Rich. & Galeotti 1845; Spiranthes lupulina (Lindl.) Hemsl. 1884; Spiranthes pubens A.Rich. & Galeotti 1845; Stenorrhynchos aurantiacum (Lex.) Lindl. 1840; Stenorrhynchos aurantiacum var. acuminatum (B.L.Rob. & Seaton) Conz. 1947; Stenorrhynchos lanuginosum (A.Rich. & Galeotti) Schltr. 1918; Stenorrhynchos lupulinum Lindl. 1840; Stenorrhynchos pubens (A.Rich. & Galeotti) Schltr. 1918

References W3 Tropicos, Kew Monocot list , IPNI ; Bonplandia Rchb.f 1856 as Stenorrhynchos lupulinus; AOS Bulletin Vol 49 No 5 1979 as Spiranthes aurantiaca; Las Orquideas De El Salvador Vol 3 Hamer 1981 as Stenorhynchus aurantiaca drawing/photo fide; Flora Novo-Galaciana McVaugh 1985 as Spiranthes aurantiaca; Icones Planetarum Tropicarum plate 1294 Hamer/Dodson 1985 as Stenorrhynchos aurantiacum drawing ok; Guatemala Y Sus Orquideas Behar & Tinschert 1998 as Spiranthes aurantiacus photo fide; Orquideas del Estado de Morelos ORQUÍDEA (MÉX.) VOLUMEN 16 NÚMERO ÚNICO enero 2002 as Stenorrhynchos aurantiacus drawing/photo fide; AOS Bulletin Vol 72 No 11 2003 photo fide; Genera Orchidacearum Vol 3 Orchidoideae Part 2 Pridgeon, Cribb, Chase and Rasmusen 2003 photo fide; Guia de Orquideas de Chiapas Carlos Rommel Beutelspacher Baigts 2013 photo fide; Orchid Genera and Species in Guatemala Archila, Szlachchetko, Chiron, Lipinska, Mystkowska and Bertolini 2018 as Stenorhynchos aurantiacus; Orchid Genera and Species in Guatemala Archila, Szlachchetko, Chiron, Lipinska, Mystkowska and Bertolini 2018 as Stenorhynchos pubens