Gl4AfttALIUM AND XERANTHEMUM. 539 
annud* Folia alterna, lanceolata, integerrima, uninervia. 
Floret soUtarii, pedunculati, viagni, albi v, rosei. Stigma 
JloscuUs fcemmeis integrum, longe eocsertum. 
To this genus belong Xera7ithemum annuum and in* 
afertum of Willdenow, considered by Linnaeus as varieties 
of one and the same species. 
Although I have for the present followed the former^ 
in regarding these as distinct, yet I am very much inclined 
to believe that they will be found to resolve into a single 
specieSi I have already pointed out the numerous points 
of agreement between this genus and Catananclie, and that 
the stigma has a striking analogy to the same organ ia 
Carlina, sl circumstance which has been before observed by 
M. Cassini *. The tube of the florets in the Carduacece is 
in general of an uniform consistence ; but in this and the 
following genus, the lower half of the tube is of a green 
colour, thick and coriaceous, and the upper half thin, and 
of a white colour. M. Desfontaines, although he notices it 
in Chardinia, does not seem to have been aware of its ex- 
istence in this genus. Although apparently a character of 
considerable importance, M. Cassini does not notice it in his 
character of the tribe Xeranfliemece. 
Chardinia, Desf, 
Xeramthemi sp. Willi. 
Involucrum imbricatum, scariosum, coloratum, non ra- 
dians. Receptaculum planum : palds distinctis, crebris, eii- 
siformibus. Flosculi Jie^ina/pltrodiii tubulosi, 5-dentati: 
tubus fere aequalis, ultra dimidium coriaceus ; Jwminei mat- 
ginales, filiformes, tridentati. Filamenta parte coriacea tubi 
connata, ultra cam libera ac monadelpha. Anther ce basi 
setis 2 plumosis instructae. Stigma clavatum, bilobum. 
Journ. Phys. 82. p. 127, 
