PETALODY. 29] 
realised. Fig. 156 is a diagram showing the presence 
of two additional labella within the ordinary one in 
a species of Catasetwin, and repre- 
senting two petaloid stamens, a 
outer staminal whorl, of which 
there is usually but a single 
representative (see Peloria, Mul- 
tiplication, Prolification). In = 
some of these double orchids it is, Fxg. 156 —Diagram of 
however, necessary not to con- flower of Catasetwm, with 
found a petaloid condition of the *¥° #>ella. 
existing column with the development of usually sup- 
pressed stamens in a petaloid form. Thus, in Lycaste 
Skinneri the column is frequently provided with two 
petal-hke wings, which might readily be supposed to 
be two stamens of the inner whorl adherent to the 
eolumn ; a little attention, however, to the relative 
position of these adventitious wings is generally suffi- 
cient to enable the observer to ascertain the true 
nature of the appearance.* 
Some forms of duplicate or hose in hose corollas are 
apparently due, not so much to the formation of a 
second corolla within the first, as to the presence of an 
inner series of petal-like stamens, which, by their 
cohesion, form a second pseudo-corolla within the first. 
The staminal nature of this pseudo-corolla is inferred 
from the occasional presence of anthers on it.” In 
Datura fastuosa, as well as in Gloxinia, a pseudo- 
corolla of this kind sometimes occurs with the addition 
of a series of petaloid stamens attached to its outer 
surface.* 
When the petalody specially affects the anther-lobes, 
as in Arbutus, Petunia, Fuchsia, §c., the venation of 
the petal-like portion is very frequently laminar, thus 
thus evidently completing the f° \ 
! See also C. Morren, “Sur les vraies fleurs doubles chez les Orchi- 
dées,” ‘ Bull. Acad. Roy. Belg.,’ vol. xix, part 11, 1852, p. 171. 
2 ©. Morren, ‘Bull. Acad. Belg.,’ vol. xx, 1853, part ii, p. 284 
(Syringa). 
3 * Rep. Bot. Congress,’ London, 1866, p. 135, t. vii, f. 14. 
