Sarcoglottis assurgens (Rchb.f.) Schltr. 1920
Photo by © EA and The Flora de la Penninsula de Yucatan
Photo by © W J Hayden
EARLIER 
Common Name The Ascending Sarcoglottis
Flower Size .56” [1.4 cm] long
Found in Campeche, Yucatan and Chiapas states of Mexico and Peten department of Guatemala in oak/pine forests at elevations around 1300 to 1900 meters as a medium sized, cool growing terrestrial with fasciculate-tuberous roots giving rise to a rosette of leaves that are not present at blooming which occurs in the later winter and early spring on an erect, scapose, peduncle 12 to 14.6” [30 to 36.5 cm] long, stem enveloped completely by imbricate, lowermost inflated, clasping above sheathing bracts, racemose, rachis 4 to 5.6 ” [10 to 13.5 cm] long, laxly 9 to 15 flowered inflorescence with thin, ovate, acuminate, shorter than the ovary floral bracts and carrying arching-recurved, small, yellow green flowers that are tubular in the inferior part
"The only distinctive difference separating S assurgens from !Sarcoglottis acaulis is the shape of the lip which is broad at the base and gradually narrowed above to the apical lobule. The lower portion below the constriction is thus lanceolate instead of being oblanceolate as in typical S. acaulis." Correll 1947
Synonyms Gyrostachys assurgens (Rchb.f.) Kuntze 1891; Spiranthes acaulis var. assurgens (Rchb.f.) Correll 1947; Spiranthes assurgens Rchb.f. 1866; Spiranthes picta var. assurgens (Rchb.f.) Ames & Correll 1942
References W3 Tropicos, Kew Monocot list , IPNI ;
Beitr. Orchid.-K. C. Amer.: 66 Rchb.f 1866 as Spiranthes assurgens
Revis. Gen. Pl. 2: 664 Kuntze 1891 as Gyrostachys assurgens
* Beih. Bot. Centralbl. 37(2): 414 Schlechter 1920
Bot. Mus. Leafl. 10: 67 Ames & Correll 1942 as Spiranthes picta var. assurgens
Lloydia 10: 209 Correll 1947 as Spiranthes acaulis var. assurgens
Harvard Pap. Bot. 5 #2: 452 Carnevali etal. 2001
Harvard Pap. Bot. 5 #2: 449 Carnevali etal. 2001 photo fide;
Orquideas del Estado de Morelos: 268 ORQUÍDEA (MÉX.) VOLUMEN 16 NÚMERO ÚNICO enero 2002
Orquideas del Estado de Morelos: 269 ORQUÍDEA (MÉX.) VOLUMEN 16 NÚMERO ÚNICO enero 2002drawing
Orquideas del Estado de Morelos: Lamina 40 # 124 ORQUÍDEA (MÉX.) VOLUMEN 16 NÚMERO ÚNICO enero 2002photo fide;
Orchid Genera and Species in Guatemala Archila, Szlachchetko, Chiron, Lipinska, Mystkowska and Bertolini 2018
Flora Mesoamerica Vol 7 Parte 2 Orchidaceae: 75 MBG UNAM 2023
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