therefore the more desirable. It requires to be potted in rough sandy 
peat; and judging from the observations of Von Martius, which we 
have quoted, it may readily be supposed that if small lumps of broken. 
quartz, mixed perhaps with a little micacious sandstone were to consti- 
tute the necessary stratum of drainers, at the bottoms of the pots, the 
plant may be cheated into a belief that it is luxuriating on the golden 
mountains of Serra Blanca. Its roots are strong and numerous for its 
size, therefore it requires to be frequently removed into larger sized 
pots. Ifit be gradually hardened, and then turned into a border, in 
front of the stove or greenhouse, in June, it will grow vigorously and 
flower very freely till the middle of September.- As this species of 
Barbacenia frequently perfects its seeds, on these we would recommend 
the chief dependance for increase ; for although it may be propagated 
by division of its roots the plants do not readily recover this treatment. 
It should be kept in the stove, and probably would flourish with 
pretty nearly the same management as its near ally, the pine-apple. 
In the article previously referred to,in Dr. Lindley’s Nat. Syst.it is ob- 
served, in reference to the genera belonging to this family, that “ They 
are all capable of existing in a dry hot air without contact with the 
earth ; on which account they are favourites in South American gar- 
dens, where they are suspended in the dwellings, or hung to the balus- 
trades of the balconies ; situations in which they flower abundantly, 
filling the air with their fragrance.” 
DERIVATION OF THE NaMEs. 
Barsacenra, after Barbacena, a Governor of Minas Geraes,in Brazil. Prr- 
PUREA, purple, the colour of the flowers. 
SYNONYME. 
BarsBacenia PuRPUREA. Hooker, Botanical Magazine, 2777. 
