am showing the arrangement of
parts in a malformed flower of _Ophrys aranifera_ (see p.
384).]

[Illustration: FIG. 194.--Malformed flower of _Ophrys
aranifera_ with two supernumerary lips and three additional
stamens.]

A similar illustration, for a knowledge of which the writer is
indebted to the kindness of Professor Asa Gray and Mr. Darwin,
occurred in some specimens of _Pogonia ophioglossoides_
collected by Dr. J. H. Paine in a bog near Utica, New York. It
will be seen from the following description that these flowers
presented an almost precisely similar condition to those of the
_Ophrys aranifera_ just mentioned. "The peculiarities of these
flowers," writes Professor Gray, "are that they have three
labella, and that the column is resolved into small petaloid
organs. The blossom is normal as to the proper perianth, except
that the labellum is unusually papillose, bearded almost to the
base. The points of interest are, first, that the two accessory
labella are just in the position of the two suppressed stamens
of the outer series, viz. of A2 and A3, as represented in the
diagram, fig. 192; and there is a small petaloid body on the
other side of the flower, answering to the other stamen, A1.
Secondly, in one of the blossoms, and less distinctly in
another, two lateral stamens of the inner series (_a_1 and
_a_2) are represented each by a slender naked filament. There
are remaining petaloid bodies enough to answer for the third
stamen of the inner series and for the stigmas, but their order
is not well to be made out in the dried specimens." It may here
be mentioned that _Isochilus_ is normally triandrous.

A tetrandrous flower of _Cypripedium_ has also been recorded.

In _Isochilus_, according to Cruger, there are often five
stamens, and there are several, besides those already
mentioned, in which six more or less perfect stamens have been
seen--of these the following may be taken as illustrations. A
hexandrous flower of _Orchis militaris_ has been recorded by
Kirschleger,[452] and in the accompanying diagram (fig. 195),
from Cramer,[453] of a monstrous flower of _Orchis mascula_,
there is one perfect stamen of the outer row and two lip-like
stamens of the same series, while the inner verticil comprises
one perfect and