apicem versus constricto, lobo terminali undulato, reflexo, 
membranaceo, apice ipse truncato, toto labello usque ad 8 mm. 
longo, 4 mm. lato; columna crassa, facie pubescenti, usque ad 3 
mm. longa; ovario plus minusve clavato, puberulo, haud torto. 
Peru: Depto. Puno, Prov. Carabaya, Machea, 2800 m. alt. 
Coll. Vargas 6965! Type! (AMES). 
This new species is known also from Argentina, and is 
illustrated as Brachystele chlorops (Rchb.f.) Schltr. in Bol. Soc. 
Argentina Bot. 16(4): 356, 1975. 
Odontorhynchus variabilis Garay, sp. nov. 
Plantae terrestres, elatae, usque ad 40 cm. altae; radicibus 
fasciculatis, carnosis, pubescentibus; folius plerumque basali- 
bus, paucis, lanceolatis vel lanceolato-ovatis, acutis, basi condup- 
licato-subpetiolatis, deinde vaginantibus, usque ad 12 cm. 
longis, 2.5 cm. latis, vulgo minoribus; caulibus strictis vel 
paululo arcuatis, multivaginatis, apice dense spicatis; bracteis 
lanceolatis, acuminatis, usque ad 2 cm. longis; floribus semi- 
apertis, extus pubescentibus, vulgo viridis, interdum labello 
sucineo colorato; sepalo postico lineari-oblongo, obtuso, usque 
ad 9 mm. longo, 3 mm. lato; sepalis lateralibus obliquis, lineari- 
oblongis, obtusis, usque ad 9 mm. longis, 2 mm latis; petalis 
lineari-spathulatis, dimidio superior! subrhombeis, margine 
integris vel subcrenulatis, usque ad 9 mm. longis, 2 mm. latis; 
labello varie reflexo, basi excavato, sub spice constricto, 3-lobo, 
lobis lateralibus erectis, subparallelis, explanato late ellipticis, 
lobo intermedio subquadrato vel transverso, margine crenulato 
ad grosse eroso denticulato, disco incrassato, in medio callis 
subparallelis, pubescentibus donato, toto labello usque ad 7 
mm. longo, 5 mm. lato; columna brevi, sursum leviter dilatata, 
usque ad 2.5 mm. longa; ovario clavato, apicem versus 
pubescenti, usque ad 8 mm. longo. 
Chile: Prov. Chiloe, Cucao, ca. 50 m. alt. Coll. Werdermann 
303! Type! (AMES). 
The specimens of this new species are commonly found in 
herbaria under Spiranthes or Brachystele unilateralis. Brachy- 
stele unilateralis, chosen as lectotype for the genus, however, is 
287 
