Pelexia bonariensis (Lindl.) Schltr. 1920 SECTION Pachygenium
Photo by © Dalton Holland Baptista and Orchidstudium
Photo by © Ricardo Luis Penz and his Orchid Website
Photo By Alejandro Taborda
Drawing By Hoehne
Drawing of P callosa By M N Correa
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Common Name The Bonare Pelexia [a national park within Mato Grosso state of Brazil]
Flower Size 1 1/2" [3.5 cm]
Found in Yungas department of Bolivia, Minas Gerais, Rio de Janiero and Santa Catarina states of Brazil, Paraguay, Montevideo province of Uruguay and Salta and Cordoba departments of Argentina in grass and open woodlands as a medium to large sized, cool to cold growing terrestrial with 2 to 4, rosulate, large, dark green, lanceolate, gradually narrowing below into the petiolate base leaves that blooms in the spring and summer on an erect, peduncle 14.6 to 21.6" [36 to 54 cm] long, provided with spaced, apressed, lanceolate to oblong-lanceolate, long acuminate sheathing bracts, rachis 4 to 6" [10 to 15 cm] long, 11 to 18 flowered inflorescence with lanceolate to linear-lanceolate, long acuminate, shortly puberulent, pale green, membraneous, longer than the flowers floral bracts.
"Schlechter noted that due to the narrow labellum this species is related to Pelexia fiebrigii but it has the apical lamina of the labellum slightly wider than the rest of it, whereas in the present species this aspect is more rounded and not as wide as the part below the isthmus." Hoehne 1945
Synonyms Gyrostachys bonariensis (Lindl.) Kuntze 1891; Pachygenium bonariense (Lindl.) Szlach., R.González & Rutk.; Pachygenium callosum Mytnik, Szlach. & Górniak 2010; Pachygenium saltense (Griseb.) Szlach., R. González & Rutk. 2001; Pelexia callosa M.N.Correa 1953; Pelexia saltensis (Griseb.) Schltr. 1920; *Spiranthes bonariensis Lindl. 1840; Spiranthes bonariensis var. bombylifera Rchb.f. & Warm. 1881; Stenorrhynchos bonariense var. bombyliferum Cogn. 1895; Stenorrhynchos bonariense var. robustum Cogn. 1895; Spiranthes saltensis Griseb. 1879; Stenorrhynchos bonariensis (Lindl.) Cogn. 1905; Stenorrhynchos saltensis (Griseb.) Cogn.1895;
References W3 Tropicos, Kew Monocot list , IPNI ;
Gen. Sp. Orchid. Pl.: 475 Lindley 1840 as Spiranthes bonariensis
Otia Botanica Hamburgensia 2(1): 56 Rchb.f 1878 As Spiranthes bonarienses var bombylifera;
Abh. Königl. Ges. Wiss. Göttingen 24: 338 Griseb. 1879 as Spiranthes saltensis
Revis. Gen. Pl. 2: 664 Kuntze 1891 as Gyrostachys bonariensis
Fl. Bras. 3(4): 164 Cogniaux 1895 as Stenorrhynchos bonariensis
Fl. Bras. 3(4): 164 Cogniaux 1895 as Stenorrhynchos bonariense var. bombyliferum
Fl. Bras. 3(4): 164 Cogniaux 1895 as Stenorrhynchos bonariense var. robustum
Fl. Bras. 3(4): 165 Cogniaux 1895 as Stenorrhynchos saltensis
Studies in the Family Orchidaceae Fascile 2 Ames 1908 as Spiranthes saltensis;
* Beih. Bot. Centralbl., Abt. 2. 37: 400 Schlechter 1920
Beih. Bot. Centralbl., Abt. 2. 37: 405 Schlechter 1920 as Pelexia saltensis
Flora Brasilica Vol XII II: 235 Hoehne 1945
Flora Brasilica Vol XII II: Tab 124 Hoehne 1945 drawing fide;
Darwiniana 10: 165 M.N.Correa 1953 as Pelexia callosa nom. illeg. homonym. post.
Darwiniana 10: 159 M.N.Correa 1953 as Pelexia callosa drawing fide
Orchidaceae Brasilenses Band 1: 280 #441 Pabst & Dungs 1975 drawing fide;
Polish Bot. J. 46: 4 Szlach., R.González & Rutk. 2001 as Pachygenium bonariense
Polish Bot. J. 46: 6 Szlach., R.González & Rutk. 2001 as Pachygenium saltense
100 Orquideas Argentinas Freuler 2005 photo fide;
Ann. Bot. Fenn. 47: 215 Mytnik, Szlach. & Górniak 2010 as Pachygenium callosum
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