Dichromanthus michuacanus (Lex.) Salazar & Soto Arenas 2002

Plant and Flowers in situ Mexico

Photos by © Carl Luer and The Swiss Orchid Foundation at the Jany Renz Herbaria Website

LATE THROUGH EARLY

Common Name The Michuacan Dichromanthus

Flower Size .6" [1.5 cm] long

Found in Texas, Arizona, Mexico, and Honduras in grassland openings within junipers and scrubby oaks at elevations of 1500 to 2500 meters as a small to just large sized, cool to cold growing terrestrial with an erect, stout, glabrous below, copiously pilose above stem carrying 2 to 5, present at flowering, near the base to below the middle, sometimes withered to dry, ascending stiffly when fresh, often conduplicate, linear-lanceolate to elliptic, acute, basally clasping leaves that blooms in the late summer through early winter on a terminal, erect, 8 to 10" [20 to 35 cm] long, sometimes semi secund, rachis 6 to 10" [15 to 25 cm] long, often densely 30 to many flowered inflorescence with ovate, acuminate, scarious, prominently nerved, shorter than the ovary floral bracts and carrying flowers emitting an intense lemony scent with a hint of urine

Synonyms Dichromanthus michuacanus f. armeniacus R.A.Coleman 2009; Gyrostachys madrensis (Rchb.f.) Kuntze 1891; Gyrostachys michuacana (Lex.) Kuntze 1891; Gyrostachys sulphurea (Lex.) Kuntze 1891; *Neottia michuacana Lex. 1825; Neottia sulphurea Lex. 1825; Schiedeella michuacana (Lex.) Burns-Bal. 1981; Spiranthes bracteolaris Kraenzl. 1915; Spiranthes madrensis (Rchb.f.) Hemsl. 1884; Spiranthes michuacana (Lex.) Hemsl. 1884; Spiranthes sulphurea (Lex.) Hemsl. 1884; Stenorrhynchos madrense Rchb.f. 1855; Stenorrhynchos michuacanum (Lex.) Lindl. 1840; Dichromanthus michuacanus f. armeniacus R.A.Coleman 2009; Schiedeella michuacana (Lex.) Burns-Bal. 1981; Stenorrhynchos michuacanum subsp. vexillaris Szlach. 1994; Stenorrhynchos sulphureum (Lex.) Lindl. 1840; Stenorrhynchos vexillare (Szlach.) Szlach. 2004

References W3 Tropicos, Kew Monocot list , IPNI ; ORQUIDEA (Méx . ) 8(1) 1981 as Schiedeella michuacana; The Native Orchids of the United States and Canada Luer 1975 drawing/photos fide; Flora Novo Galaciana Vol 16 Orchidaceae Mcvaugh 1985 as Spiranthes michuacanus drawing fide; AOS Bulletin Vol 65 #12 1996 as Stenorrhynchus michoacanus photo fide Orquideas del Estado de Morelos ORQUÍDEA (MÉX.) VOLUMEN 16 NÚMERO ÚNICO enero 2002 as Stenorrhynchos michuacanus drawing/photo fide; Orquideas del Estado de Morelos ORQUÍDEA (MÉX.) VOLUMEN 16 NÚMERO ÚNICO enero 2002 as Stenorrhynchos sulphureus drawing/photo fide; Genera Orchidacearum Vol 3 Orchidoideae Part 2 Pridgeon, Cribb, Chase and Rasmusen 2003 drawing fide; Orchids of Mexico Hagsater, Soto, Salazar etal 2005 photo ok; AOS Bulletin Vol 78 #4 2009 photo fide; Orchid Genera and Species in Guatemala Archila, Szlachchetko, Chiron, Lipinska, Mystkowska and Bertolini 2018 as Stenorhynchos michuacanum

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