_Receptaculum_ setosum. _Pappus_ simplex. _Corollæ_ radii
infundibuliformes, longiores, irregulares.

_Specific Character and Synonyms._

CENTAUREA _glastifolia_ calycibus scariosis, foliis indivisis
integerrimis decurrentibus. _Lin. Syst. Veg. p. 787._ _Gmelin Sib. 2.
p. 83._

CENTAURIUM majus orientale erectum, glasti folio, flore luteo. _Comm.
rar. 39. t. 39._

[Illustration: 62]

Assumes the name of _glastifolia_ from the similitude which the leaves
bear to those of the _Isatis tinctoria_, or _Woad_, _Glastum_ of the old
Botanists.

In this plant we have an excellent example of the _Folium decurrens_ and
_Calyx scariosus_ of LINNÆUS, the leaves also exhibit a curious
phenomenon, having veins prominent on both their sides; the scales of
the calyx are moreover distinguished by a beautiful silvery appearance,
which it is difficult to represent in colours.

It is a native of the East, as well as of Siberia; flowers with us in
July, in the open border, and is readily propagated by parting its roots
in autumn, which are of the creeping kind: requires no particular
treatment.

MILLER, in the last 4to edition of his Dictionary, enumerates a