51 



I was certainly wrong in referring this plant to C. viridis, from which it 

 differs in its sepals and petals being much narrower, the flowers less 

 green, the lip larger, and of a different form in its upper lobe. 

 3. C.ju(/osus (Maxillaria jugosa, Lindl. in Bot. Reg. 1841. misc. 104.) ; se- 

 palis oblongis incurvis obtusis, petalis conformibus concavis basi angus- 

 tatis, labelli sigmoidei oblongi unguiculati pilosi jugosi lobis lateralibus 

 nanis obtusis, intermedio semi-circulari, columna apice lobata bisulca 



villosissima. Brazil. Near C. placanthera, from which it differs 



in having the flower of a globose figure, with much less linear sepals 

 and concave oblong petals narrowed to the base. These parts are of a 

 rich cream colour, speckled with crimson. The lip has quite a different 

 form, being semicircular at the tip, deeply furrowed and closely covered 

 with short hair. The column has two deep furrows in front almost 

 buried in hairs. 



66. CEREUS biformis. 



C. biformis ; ramis alatis articulatis crenatis, sterilibus oblongis sessilibus, 

 fioridis lanceolatis basi teretibus, petalis linearibus acutissimis, stigmate 

 5-lobo. 



A curious and very pretty plant from Honduras, commu- 

 nicated by Sir Charles Lemon. It has bright rose-coloured 

 flowers, not unlike those of Cereus flagelliformis. I hope soon 

 to be able to figure it, with a full description by Mr. Booth. 



67. BIFRENARIA. 



This genus differs from Maxillaria proper in having its 

 pollen-masses attached to a short gland, by a pair of distinct 

 straps, or caudiculae, instead of one ; a character, minute in- 

 deed, but constant and readily detected, although often over- 

 looked. On that account several species have been referred to 

 Maxillaria, as I have now ascertained, and it is not improbable 

 that others may still lie unknown among that large and trou- 

 blesome genus. The following are characters of all of which 

 I possess any certain information. 



Bifrenaria, Lindl. Sepala patula, libera, subsequalia; late- 

 ralia cum basi producta columna? connata. Petala sepalis 

 duplo minora. Labellum cum pede columnae articulatum, 

 cucullatum, trilobum, medio callosum. Columna brevis, 

 semiteres. Anthera subcristata. Pollinia 4, per paria in- 

 cumbentia, caudiculis duabus distinctis, glandula oblonga. 



Herbae epiphytse, pseudobulbosae. Folia terminalia 



subsolitaria, plicata, cartilaginea. Pedunculi radicales, 

 uniflori v. racemosi, saepe elongati. 



