144 BRECK’S NEW BOOK OF FLOWERS. 
pyramidal habit of 14 foot, covered with ten to twenty 
flowers; of this there is as yet but one variety. 
Imbricated Pompon Aster.—This class embraces twelve 
or more varieties of exquisite shaped flowers, very full 
and double, with narrow petals closely imbricated, form- 
ing a most perfect pompon. 
Asters, styled Bombee, are convex shaped, and are in- 
cluded among the Pony-flowered. 
Imbricated, like the Pompons, are closely imbricated 
with an immense number of petals, having larger flowers 
and more flat and spreading; some of the varieties have 
a rich metallic lustre ; height 14 foot. 
To have Asters in perfection, the ground should be dug 
deep and highly manured. For early blooming plants, 
the seed should be sown in frames with a little bottom 
heat in April. But for late-flowering plants, they succeed 
full as well when sown in the open ground, from the Ist 
to the 10th of May.—Asters have the most pleasing effect 
when planted in beds. The tallest growing plants should 
be placed one foot to fifteen inches apart; the dwarf- 
varieties from six to ten inches. The plants, when cov- 
ered with flowers, will require a little support, with light 
rods, as a heavy rain or wind often prostrates them unless 
thus protected. Asters are in perfection from the middle 
of August to the middle of September. 
+e 
CALTHA.—Marss Maricoxp. 
[Caltha signifies in Greek a goblet, and refers to the appearance of the flower 
when not fully expanded.] 
Caltha palistris.—Marsh Marigold.—This is a handsome 
indigenous perennial, seen in the early part of May, or- 
namenting the margin of brooks and wet places with a 
great profusion of its yellow blossoms, by which the 
course of a stream may be traced a great distance by the 
