LINDLEY ON CUMING'S ORCHIDE.F. q 
ONCIDIUM. Swartz. 
1947. O. altissimum, Sw.— Panama et Columbia occiden- 
talis. 
1208. O. onustum, (Lindl. MSS.) ; sepalis omnibus liberis, 
labello bilobo transverso: lobis lateralibus linearibus apice 
subdilatatis, callo baseos oblongo cochleato antice appendicula 
tuberculiformi instructo, alis columnze 2 integerrimis, foliis 
linearibus complicatis falcatis, scapo simplici, racemis cernuis 
secundis multifloris. — Panama et Columbia occidentalis. 
1312. O. ampliatum, (Lindl. MSS.); sepalis omnibus 
liberis, labello bilobo subrotundo transverso: lobis lateralibus 
brevissimis, callo baseos 3-lobo: lobis lateralibus teretibus in- 
termedio compresso, alis columnze 3 cuneatis dentatis laterali- 
bus reflexis, pseudobulbis subrotundis compressis, foliis planis 
oblongo-lanceolatis, scapo erecto apice ramoso.— Panama et 
Columbia occidentalis. 
HEXISEA. Lindl. MSS. 
1297. Perianthium clausum, sepala et petala subeequalia, 
angusta: illorum lateralibus invicem discretis sed basi colum- 
nz adnatis. Labellum posticum, cum columns connatum, 
refractum, inappendiculatum, integerrimum, sepalis subcon- 
forme. Columna erecta, basi nullo modo producta, apice 
biaurita. Anthera dorso convexa, carnosa, 4-locularit, 
valvulis membranaceis longitudinaliter dehiscentibus. Pol- 
linia 4, collateralia (00 00), materie parca, granulosa, stig- 
mati annexa.— Herba epiphyta, caulibus teretibus, adscen- 
dentibus, articulatis. Folia linearia, coriacea, apice emar- 
ginata. Racemi terminales, pauciflori, bracteis magnis mem- 
branaceis, e squamis cartilagineis imbricatis erumpentes. 
This genus is, in some respects, related to Zsochilus and 
Dinema, from which, however, it differs entirely in the struc- 
ture of its pollen-masses. Its nearest affinity is certainly with 
Celogyne,* and particularly with the section Panisea, from 
«se avail myself of this opportunity for correcting an error in the 
generic character of Celogyne in od ** Gen. and Sp. of Orchideous Plants.” 
