384 Prof. Lindley on new Orchidaceous Plants. 



vioribus, floribus plurimis abortientibus, sepalis lineari-lanceolatis 

 liberis, petalis lanceolatis, labello oblongo emarginato pandurato 

 lobis basilaribus intermedio subccqualibus, crista verrucosa proces- 

 subus 5 digitiformibus circumdata, columnee alls maximis obtuse 

 lobatis. 



Quito (Hartvveg). 



This is near 0. Wentworthianum in the colour and structure of the 



flowers. Occasionally the principal part of them abortive, as in O. 



heteranthum. The panicle is occasionally 3 feet long or even more. 



45. Oncidium pyramidale ; pseudobulbis ovatis ancipitibus 2-3-phyl- 

 lis, foliis oblongis tenuibus basi angustatis scapo erecto rigido pa- 

 niculato pyramidali multo brevioribus, sepalis obtusis liberis dor- 

 sali ovali lateralibus linearibus, petalis duplo latioribus ovatis ob- 

 tusis, labelli lobis lateralibus amplexicaulibus intermedio bilobo 

 latioribus, crista antice excavata processubus 7 (?) linearibus an- 

 ticis longioribus, columna nana alis verticalibus lineari-cuneatis 

 sublobatis, rostello subulato. 



Pasto (Hartvveg). 



Near 0. excavatum, but with the rostellum of 0. ornithorhynchum. 

 Scape a foot and a half high. 



46. Oncidium trifurcatum ; , sepalis lateralibus unguiculatis 



spathulato-obovatis planis dorsali unguiculato rotundato crispo 

 duplo breviori, petalis oblongis crispis dorsali minoribus, labello 

 unguiculato tripartito laciniis linearibus truncatis lateralibus ca- 

 naliculatis, crista trilamellata, columna tetraptera alis superioribus 

 linearibus carnosis apice abrupte recurvis inferioribus rotundatis 

 tenuioribus, clinandrii dorso in dente antherifero producto, rostello 

 membranaceo bifido. 



Peru (Hartweg). 



I have only seen three flowers of this. They are 3 inches in dia- 

 meter ; the lateral sepals are whole-coloured, the dorsal, and the pe- 

 tals are bordered with yellow (.''). It stands near O. serratum, Lindl. 



47. Oncidium cultratum (II. ft * ++ HH ^^W^^W) 5 pseudobulbis ova- 

 libus compressis, foliis solitariis lanceolatis basi canaliculatis scapo 

 humili sequalibus, panicula cernua simplici floribus quibusdam 

 abortientibus, sepalis petalisque oblongis subpequalibusreflexis, la- 

 bello bilobo, crista parva tuberculata, columnse alis maximis cul- 

 tratis obtusis integris. 



Popnyan (Hartweg). 



As far as I can judge of 0. olivaceum, which I have never been 

 able to see, it must be near this, which is a dwarf species with not 

 more than ten flowers in the panicle. The flowers appear to be olive- 

 brown with a yellow lip. 



L 48. Pleukothallis Cassidis ; caule anguloso medio vaginato folio 

 ovato-oblongo amplexicauli obtuso duplo longiore, spatha magna 

 coriacea, spicis plurimis rigidis erectis multifloris folio longioribus, 

 sepalis acutis supremo galeato lateralibus semiconnatis, petalis 



