The plants of the genus Porphyrostachys may be separated 
from Stenoptera in that the flowers have a column with a long. 
decurrent foot to which the lip is adnate; lateral sepals are also 
decurrent on the ovary. These characters are absent in Stenop- 
lerd. 
Psilochilus carinatus Garay, sp. nov. 
Terrestris, erecta, usque ad 30 cm. alta; caulibus ascenden- 
tibus, pluriarticulatis, primum vaginatis, deinde laxe paucifo- 
liatis; foliis ovato-ellipticis, acutis vel subacuminatis, basi 
rotundatis, breviter petiolatis, usque ad 9.5 cm. longis, 4 cm. 
latis; inflorescentia terminali, pauciflora; bracteis distichis, 
ovato-lanceolatis, usque ad 1.5 cm. longis, sursum decrescen- 
tibus; floribus succedaneis: sepalo postico lineari-oblongo, 
acuto, dorsaliter in medio carinato-incrassato, usque ad 21 
mm. longo, 3.5 mm. lato; sepalis lateralibus falcato-linearibus, 
acutis, dorsaliter subcarinatis, usque ad 18 mm. longis, 3.5 
mm. latis; petalis tenuibus, falcato-oblanceolatis, acutis, usque 
ad 18 mm. longis, 3 mm. latis; labello longe unguiculato, deinde 
cuneato-trilobo, lobis lateralibus oblique triangularibus, lobo 
intermedio antico, subquadrato-rotundato, antice truncato, 
margine eroso-denticulato, disco in medio bicarinato, Carina 
tertia in ungue, usque ad 17 mm. longo, 7 mm. lato; columna 
gracill, arcuata, alis subtruncato-denticulatis, usque ad 15 mm. 
longa; ovario cylindrico, breviter pedicellato, usque ad 15 mm. 
longo. 
Colombia: Sierra Nevada de Santa Marta, PURDIE s.n.! 
type! (K); Fusagasuga, HOLTON s.n.! (K). 
Palmorchis colombiana Garay, sp. nov. 
Herba terrestris, elata, pars quae adest, 40 cm. longa; radici- 
bus nondum notis; caulibus supra foliosis; foliis satis tenuibus, 
ellipticis, acutis vel abrupte acuminatis, basi longe petiolatis; 
lamina usque ad 20 cm. longa, 7.5 cm. lata; petiolo usque ad 10 
cm. longo; inflorescentiis satis gracilibus, remote plurivagina- 
tis, supra subdense plurifloris, usque ad 12 cm. longis:; bracteis 
lanceolatis, acuminatis, usque ad 10 mm. longis; floribus al- 
bidis, succedaneis; sepalo postico lineari-ligulato, obtusius- 
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