IRREGULAR PELORIA. 231 
narrow orifice of the corolla. The colour at the base 
of the tube inside is as in the perfect peloria; while 
round the summit of the tube, in both cases, the inten- 
sity of colour is greatest on the outside. Now, in a 
normal flower the. deepest colour is within just opposite 
the orifice of the corolla; this deep colour is also seen 
outside of the central and most elevated portions of the 
lower lip. In the peloria the deep colour at the base 
of the tube represents that which is near the orifice 
under ordinary circumstances, while the outer patch 
of colour at the apex corresponds to that formed on 
the upper surface of the lower lip. On the other 
hand, in peloric flowers of Cytisus Laburnwm, Clitoria 
Ternatea, Trifoliwm repens, and other Papilonacee, 
it is the ‘‘ standard,” the form of which is repeated. 
In the case of peloric aconites’ the lateral and some- 
times the inferior coloured sepals assume the hooded 
form usually peculiar to the upper sepal only, the 
number of the petals or nectaries being correspond- 
ingly increased. Balsams become peloric by the aug- 
mentation in the number of spurs.” So when orchids 
are affected with irregular peloria it is the form of the 
labellum that is repeated, the accessory lips being 
sometimes the representatives of stamens, which are 
usually suppressed in these flowers,’ but at other times 
the appearance is due simply to the fact that all three 
petals assume the form usually confined to the lip, the 
staminal column being unaffected, except that its direc- 
tion and relative position with reference to the other 
parts of the flower is different from ordinary. This 
was the case in some flowers of Phalwnopsis equestris 
sent to me by Mr. Wentworth Buller. Fig. 123 repre- 
sents a flower of Avistolochia caudata with two lips, 
for which I am indebted to Mr. W. H. Baxter. 
From these cases it is evident that the flowers in 
1 See also Seringe, ‘ Esquisse d’ une Monogr. du genre Aconitum,’ p. 124. 
2 Schlotterbec, ‘ "Act. Helv et.,’ t. ii, pl. i, Roeper. Balsam, p. 10, note. 
3 Masters, “ Peloria, &e., Ophrys aranifera, *< Journ, Linn. Soc.,’ viii, p. 
207. 
