MASTERS ON THE EXISTENCE OF TWO FORMS OF PELORIA. 261 
in Lupins and Cytisus Laburnum ; in these instances the petals have 
been equal in form and size and very generally increased in number 
from five to six. 
In Lonicera I have seen regular peloria occur, as well as a greater 
than ordinary amount of irregularity. The Composite afford in¬ 
stances of both kinds of Peloria: thus, it not unfrequently happens, 
that the ligulate florets of the ray become replaced by tubular florets, 
like those of the disc. I have met with numerous intermediate forms 
in many Composites, particularly in the Chrysanthemum, in some va¬ 
rieties of which, it is common to meet with ligulate, tubular and 
bilabiate florets, with numerous intermediate gradations in form, in 
the same head. In cultivated Dahlias the ordinarily tubular florets 
of the disc are to a greater or less extent replaced by ligulate florets, 
—irregular Peloria. In ligulate florets, however, the irregularity con¬ 
sists not so much in inequality of the size of the constituent petals as 
in the direction of the petals to one side. In Digitalis, Dedicularis, 
Teucrium, &c. Peloria from equality of development has been noticed, 
as well as the more frequent form that results from increased irre¬ 
gularity of growth. In Linaria itself it is not uncommon to meet 
with both varieties of Peloria; that in which five spurs are produced, 
and that in which no spurs at all are produced, as in the var. anec- 
taria* 
I have already mentioned the fact that Moquin refers the last 
named instances to the category of Deformities. This is the more 
curious as in the same page he refers to the adventitious formation 
of spurs, from the palate or sinus of the upper lip of Antirrhinum , 
Linaria, Digitalis , &c. productions which in the present state of our 
knowledge cannot be otherwise considered than as Irregularities, and 
even quotes the words of Chavannes : “ Qu’il ne faut pas confondre 
ces appendices avec les veritables eperons des Linaires, ils ne tien- 
nent point comme ces derniers a la base des petales mais dans des 
points plus ou moins rapproches de leur sommet.” He thus includes 
in the same group formations which are obviously irregular and for¬ 
mations that deviate from the ordinary rule in being less irregular 
than usual! 
In Halenia , a genus wherein the corollas have usually five spurs, 
Sir ¥m. Hooker figures and describes a species wholly or partially 
destitute of spurs, JL. heterantha. f 
Among the Orchidece, flowers are occasionally met with in which 
there are a greater number of irregular portions than is customary, J 
and on the other hand specimens now and then occur, in which the 
flowers lose to a greater or less extent their irregularity. I have seen 
such flowers in Orchis pyramidalis and O. morio, in Cattleya Mossice, 
* Chavannes, Mon. Antirrhin. pp. 68, 69. 
f El. Bor. Amer. t. 155, 156. 
j Greville, El. Edinens. p. 87. CorallorMxa. Curtis. El. Londin. t. 82. Orchis 
tephrosantlws. Clos. Mem. Acad. Imp. Sc. Toulous. Yol. 3. 5me Serie, Orchis, etc. etc. 
