250 ORCHIDEA. 
13. Lateral of do. Rostellum in situ. 
14. Transverse of ovarium. 
15, Apex of pedicel. 
ORCHIDE.E. 
General Remarks. 
1, Structura. 
Some light is thrown on the structure of orchidez by the 
examination of a monster in Dr. Falconer's collection, Den- 
drobeum normale Falc. in which the lines, on the ovary mark 
out portions corresponding in number only with the petals. 
The only remarkable thing connected with the perianth of this 
plant is the complete regularity. Sepalis et petalis zequalibus, 
illis minoribus. The column is remarkable, it is short, rotundate 
triangular divided at the apex into 6 divisions, of which the 
larger are subovate subcarinate dentiform and opposite the 
smaller petals. These also may be considered as really external, 
the filaments are subulate, supporting the anthers, the subula- 
tion and length varying and increasing according to the more 
or less perfect development of the anther. 
The anthers are generally unequally developed, and even 
when three are developed so as to be polliniferous in a suffi- 
cient degree, one or two are smaller than the third. The 
largest being anticous, or that which in all the con- 
geners is alone developed. Occasionally they are very abor- 
tive, in which case they are either reduced to the form of an 
ordinary anther at a very early period of its growth, or one 
cell is much the most developed. The Pollinia are Dendro- 
beous. The stigmata are remarkable, they are decidedly op- 
to the stamina, and their perfection is in accor- 
dance with that of the stamina. "Those which are opposed 
to such stamina as are more or less abortive, are ovate 
