5 
Dendrobium Rumphianum T. et B. 
Habitat Celebes, Moluccas. 
Coll. J. J. Smith in horto bogor. 
The lateral petals suppressed in one of the two flowers (fig. 8). 
Dendrobium superbum Reich. f. 
Habitat Manilla. 
Coll. J. J. Smith in horto bogor. 
The upper sepal coalescing with the left one. The left petal 
suppressed. On the left side of the gynostemium an extra 
anther (a'). 
Pogonia discolor Bi. 
Habitat Java. 
Coll. J. J. Smith in horto bogor. 
The flowers of one raceme are all abnormal with respect to 
the petals. The latter have a tendency towards transformation 
into labella owing to the appearance of a greenish-yellow rib 
on the inner side of one or two lobes at the top. 
NB. Labellum white, with three a nerves pro- 
jecting from the innerside. 
Rhynchostylis retusa Bl. 
Habitat Java, Malacca, Siam, Philippine Islands. 
Coll. J. J. Smith in horto bogor. 
The various flowers collected and partly drawn by Mr. Smith 
present good instances of suppression and coalescence of parts 
normally present and on the other hand instances of reversion 
of such parts as in normal circumstances are rudimentary. 
Hither can be used for sustaining the general opinion which 
modern authors pronounce about the structure of the flower 
of Orchidaceae. For clearness’ sake I take in the following des- 
cription the same letters with which in his Vegetable Teratology 
(German translation p. 435, fig. 212) Masters indicates the whorls 
of the flower and their elements, viz sepals 1... 1], petals 2... 2, 
stamens A', A’, A* and a', a? and a’, carpels (stigmas) s...s, 
with this modification, however, that A? and A’ should be 
supposed separated from the labellum. 3 
