glabrous. Upper petal shorter than the two lower ones, 
thick, fleshy, darkish green, united and incorporated with 
the two inner ones, of which latter, the margins alone are 
visible : they are thin and membranous, and the three, 
collectively, form a helmet over the essential parts of fruc- 
tification ;—the two lower petals (which in most orchideous 
plants occupy the side of the flower, but here the under 
side) are long, linear, lanceolate, remarkably decurrent at 
the base, at least twice the length of the upper petals, 
uniting, and then, still lower down, forming an adnate 
spur, best seen by a transverse section, fig. 9; where the 
lower part of the figure represents the space formed between 
the petals and the germen, containing only the base of the 
labellum. The labellum is long, the margins involute 
about the column, spathulate, the extremity spreading (but 
not reflexed), waved at the margin, longitudinally striated, 
the base slightly gibbous. Column erect, long, almost a. 
lindrical, having the stigma at the base full of honey-like 
juice, spreading at the upper part into an ovate acuminate 
horizontal extremity, flat at the top, and having affixed to 
its base, on the upper surface, the lanceolate two-celled 
anther. The pollen masses, two in number, white, farina- 
ceous, clavate, having a longitudinal rima, and fixed, by 
their base, to a rather large leaden-coloured gland, are de- 
posited by the anther-case on the top of the column (as at 
fig. 7.). Germen twisted at the base. — 2 : 
The present plant is a native of Brazil, and we were. 
:the-speciada by the Mesers.:Saemiaes, of 
en*. It bears much affinity to 
lute. The two are cultivated in the same stove by the 
Messrs. SHEPHERD, and are always found to maintain their 
respective characters. 3 
* We had called this plant Nrorrta viridis, to distinguish it from the N. 
picta; but since our engraving and description weré completed, we find the 
same species to be figured in the last Number of the Botanical Register (for 
February, 1827), under the name which we have now adopted; and it is 
stated to be introduced to the Horticultural Society, in 1824, from Rio Jane- | 
iro, by Mr. Davi Doveuas. fe 
Fig. 1. Side view of the upper part of a Flower. 2, Front view of 
Flower. 3. Back view of ditto. 4. Flower deprived of its Petals. 5. © 
lumn. 6. Back yiew of the top of the Column, the Anther Case covering the — 
Pollen Masses. 7. Top of the Column, the Anther Case being removed. 
8. Pollen Masses.—All more or less magnified. ee 
