bracteis ovato-lanceolatis, acuminatis, ca. 2.5 mm. longis; 
sepalis lanceolato-ovatis, acuminatis, 5—7-nerviis; sepalo 
postico 15-16 mm. longo, 4-6 mm. lato; sepalis lateral- 
ibus leviter obliquis, 15-16 mm. longis, 4-5 mm. latis: 
petalis ovato-lanceolatis, acuminatis, 15-16 mm. longis, 
6-7 mm. latis; labello subquadrato-fiabellato, apice 
acuto, disco bicarinato, 14-15 mm. longo, 8-9 mm. lato; 
columna leviter arcuata, basim versus paululo dilatata et 
in pedem brevissimum producta. 
Hewxadesmia Dunstervillei closely resembles H. Jime- 
nesu Schltr. from Costa Rica but is easily separable from 
that taxon by the shape of the lip. This new species is 
dedicated to my good friend G. C. Kk. Dunsterville, Pres- 
ident of the Shell Oil Co. in Venezuela, with whom I am 
preparing an iconography of the Orchids of Venezuela. 
VenezurLa: Estado Miranda, Santa Teresa, Guatopo. Dec. 31, 
1955. G.C. K. Dunsterville 336 (Tyrr in Herb. Ames). 
Bifrenaria minuta Garay sp. nov. 
Kpiphytica, caespitosa, minuta, usque ad 12 em. alta; 
radicibus filiformibus leviter flexuosis, glabris; pseudo- 
bulbis aggregatis, ovoideis, unifoliatis, 1.5—2 cm. altis; 
folio pergameneo, subplicato, apice acuto, basi in petio- 
lum 2-8 cm. longum attenuato, petiolo incluso 10-12 
em. longo, 1-1.5 em. lato; inflorescentia juxta basim 
pseudobulborum nata, uniflora; pedunculo capillari, ca. 
1-1.5 cm. longo; sepalo postico ovato-oblongo, apice 
acuto, 5-nervio, 9 mm. longo, 4.5 mm. lato; sepalis lat- 
eralibus oblique ovatis vel ovato-oblongis, apice acutis, 
5-nerviis, 10 mm. longis, 6 mm. latis; petalis trulliformi- 
bus apice acutis, 8-nerviis, 8.5 mm. longis, 8 mm. latis; 
labello rhombeo, antice truncato, disco vix calloso, 10 
mm. longo, 6 mm. lato; columna leviter clavata, basi in 
pedem producta; ovario cum pedicello ca. 6 mm. longo. 
This new species is quite unique in the genus on ac- 
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