4 $ On the Origin of the Perianth of Flowers. 
rational to conclude that the same story will he true of all other groups 
of flowering-plants as well. Celakovsky, from the investigation of 
certain double flowers of Narcissus , found every transition occurring 
between the stamens and the members of both perianth-whorls, 
showing how, in fact, the “ corona ” or “ trumpet ” represents the 
upturned basal lobe of a peltate anther, each member of the perianth 
possessing such an appendage. If this be true for Narcissus, it 
must necessarily hold good also for the perianth of all other Monocoty¬ 
ledons, including such a differentiated type as that of the Alismaceae 
or the Commelynaceae. 
Hence we see that everywhere both calyx and corolla may lay 
claim to a similar place of birth, viz., in the androecium, however 
distinct and dissimilar from each other in almost every character 
they may at times appear. 1 W. C. Worsdell. 
STAMEN 
DIAGRAM ILLUSTRATING ORIGIN OF CALYX AND COROLLA 
s = sepals. p = petals. n = nectaries. sd = staminodes 
spl = sporopliyll. st.spl = sterile sporopliyll. 
1 In Calycanthus the most gradual transitions occur from the 
stamens downward through the petals and sepals to the 
bracts. 
R. Madlky, Printer, 151, Whitfield Street, Fitzroy Square. 
