173 
floret. The secundary capitulum in this way created, is so to 
say the reflected image (reduced) of the primary one. As is 
well known, in the family of the Compositae, e. g. Helianthus, 
ligulate florets often present themselves on one or more of 
the radii of the disk which is to be ascribed to incisions 
in the common receptacle disappearing later on through 
coalescence of the edges. In this way ligulate florets can 
appear on the disk and even reach its centre. These cases 
however cannot be adduced to account for ours, because 1st 
there are no ligulate florets on one or more of the radii, which 
ought to be so in case of lateral incisions 204 because the 
central portion of the disk is perfectly entire and in the very 
centre shows normal tubulate florets. It is also well known 
that Sacns, who found the same deviation in Helianthus 
annuus'), was more inclined to admit a central injury of the 
receptacle and subsequent formation of a new meristeme as 
the cause of the phenomenon. Why in this fresh meristeme 
the succession of floret and bract is turned inside out, remains 
equally unexplained. 
Spilanthes oleracea L. 
Habitat the East Indies. 
Two specimens. The disk viewed from above of n°. 1 has 
developed in one direction more than in any other and is 
grooved in that same sense. In n® 2 three grooves divide the 
disk. In both specimens the peduncle is fasciated, twowinged 
in n°. 1, threewinged in n°. 2. As the capitula in this species 
are normally placed by twos and threes in the axils of the 
leaves, the explanation of the above cases is selfevident. 
Coreopsis Drummondii Torr. et Gray. 
Habitat Texas. 
Coll. October 1898. 
The variety going by the name of , Hen and chickens”. Prnzie *) 
1) Lehrbuch der Botanik, 4e Aufl. p. 174. 
Z) Il, 69. 
