21 
vioribus, sepalis petalisque lanceolatis, labello trilobo basi 
bilamellato : lobis lateralibus nanis rotundatis intermedio 
obcuneato acuto, columna elongata apice alis 3 membra- 
naceis integris aucta. —— Peru.- — [Leaves from three to 
five inches long. Raceme about a span long. Flowers 
bright rose colour, something less than an inch in 
diameter. 
Sect. II. Eu-ÖODonToGLossum. 
* Leucochilum.— White Lip. 
7. O. Cervantesi (Llave Orch. Mex. 2. 34. Gen. & Sp. 
Orch. no. 4. Bot. Reg. 1845. t. 36); pseudobulbis 
ovatis angulatis, foliis solitariis oblongis in petiolum 
canaliculatum angustatis, scapo paucifloro, bracteis vagi- 
nisque membranaceis acutissimis equitantibus elongatis, 
sepalis membranaceis oblongo-lanceolatis acutis, petalis 
latioribus subunguiculatis acutis, labello subcordato-ovato 
acuto unguiculato, ungue carnoso cyathiformi pubescente 
anticè bidentato medio tuberculato, processubus 2 pilosis 
ante cyathum, columnæ pubescentis auriculis rotundatis. 
—— Oaxaca.——F lowers very pale pink, large, delicate, 
very sweet-scented, with numerous broken crimson con- 
centrical bands. 
8. O. apterum (Llave Orch. Mex. 2. 35. Gen. & Sp. Orch. 
no. 5); “ bulbis ovatis depressis ; foliis lato-lanceolatis 
nervosis conduplicatis; scapo tereti paucifloro; gynos- 
temio aptero crasso.”—— Mexico. This is said to be 
found in the same place as the last, and to be extremely 
like it, differing however in the lip being crenated. 
9. O. cerulescens (Ach. Richard in Ann. Se. 1845. Jan.) ; 
“ pseudobulbis ovoideo-oblongis compressis 1-phyllis, fol. 
oblongo lanceolato acutissimo ; scapo 1-2-floro; floribus 
albido-cœrulescentibus ; labello cordato, membranaceo, 
acuto, margine sinuoso, eroso; gynostemio clavato, pu- 
bente."— — Mexico. ; 
10. O. membranaceum (Lindl. Sertum Orchid. t. 25); pseudo- 
bulbis foliisque O. Cervantesii, scapo 2-4- floro, brac- 
teis vaginisque membranaceis acutissimis equitantibus, 
sepalis membranaceis unguiculatis lanceolatis, petalis 
latioribus oblongis obtusis, labello cordato obtusissimo 
unguiculato, ungue carnoso cyathiformi pubescente antice 
bidentato medio tuberculato, processubus 2 ante cyathum 
