of the Class Composita. 178 
to whose mode of inflorescence that of Composite may be com- 
pared, Singular instances of monstrosity are sometimes to be 
observed in Tragopogon, Scorzonera, &c., wherein the capitula 
have assumed the form of the compound umbel. I have already 
had an opportunity of showing that the other parts of fructi- 
fication in this class frequently experience a remarkable degree 
of increase in number, and that the stigmata are generally un- 
affected by the number of the other parts of the flower. 
I have now to state an interesting example of reduction of 
stamina in Calliopsis bicolor, a genus widely different from Dahlia 
and Coreopsis, with which it has been hitherto associated. In 
this genus most of the florets of the capitulum are quadrifid and 
tetrandrous ; and, besides the primary vessels, there are others 
which occupy singly the axis of two or three of the lacinie, 
but in no instance all of them. These secondary vessels evi- 
dently arise from the base, and not from the confluence of the 
primary trunks, as they become fainter near the apex of the 
laciniz ; and I am disposed to believe, that in many instances 
the secondary vessels take their rise with the primary trunks. 
I have distributed the groups in accordance with their natural 
affinities, at least as far as this was practicable in a linear series : 
for the families appear evidently to return into each other, ex- 
hibiting a number of points of contact. 
Fam. 1. Cicnoracez. Juss. 
Froscurr ligulati, hermaphroditi, uniformes : ligula apice 5- 
. dentata, 6-nervia: nervis dh. pue. | afi 
dentium sinus furcatis — — 
ANTHERZ cristi membranaceá pellucida coronatz, basi biseta: 
(setis dentibusve membranaceis) s. ligula simplici truncata 
aucte. 
Stigmata libera, filiformia v. semicylindrica, obtusa, papillosa. : 
ACHENIA 
