This species appears to be limited to Mexico and 
Guatemala. 
Spiranthes durangensis Ames & Schweinfurth 
nom. NOV. 
Spiranthes saltensis Ames Orch. 2 (1908) 258; Orch. 
8 (1909) 72, t. 51, non Grisebach (1879). 
Schiedeella saltensis Schlechter in Beihette Bot. Cen- 
tralbl. 87, Abt. 2 (1920) 881. 
Due to the earlier use of the combination, Spiran- 
thes saltensis by Grisebach in 1879, its use by Ames in 
1908 is invalid. Therefore we propose the new name as 
cited above, alluding to the Mexican state where this spe- 
cies was originally discovered. 
A Mexican species which has also been discovered 
in the Chisos Mountains of ‘Texas. 
Spiranthes michuacana (La Llave & Lew.) 
Hemsley in Godman & Salvin Biol, Centr.-Am. Bot. 3 
(1884) 801, as mechoacana. 
Neottia michuacana Wa Lave & Lexarza Nov. Veg. 
Deser. 2 (1825) (Orch. Opuse.) 3. 
Neottia sulphurea La Liave & Lexarza Nov. Veg. 
Descr. 2 (1825) (Orch. Opuse.) 4. 
Stenorhynchus sulphureus Lindley Gen. & Sp. Orch. 
Pl. (1840) 478. 
Stenorhynchus Michuacanus Windley Gen. & Sp. 
Orch. Pl. (1840) 480. 
Stenorrhynchus Madrensis Reichenbach filius in 
Bonpl. 8 (1855) 177. 
Spiranthes madrensis Hemsley in Godman & Salvin 
Biol. Centr.-Am. Bot. 8 (1884) 301. 
Spiranthes sulphurea Hemsley in Godman & Salvin 
Biol. Centr.-Am. Bot. 8 (1884) 302. 
Gyrostachys madrensis O. Kuntze Rev. Gen. Pl. 2 
(1891) 664. 
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