A
well-known and valuable garden shrub, of from 6 feet to 10 feet high,
with ovate and serrulated leaves, and pretty racemes of white or
yellowish-white, fragrant flowers. P. coronarius aureo-variegatus is one
of the numerous forms of this shrub, having brightly-tinted, golden
foliage, but the flowers are in no way superior to those of the parent.
It is, if only for the foliage, an extremely pretty and distinct
variety. P. coronarius argenteo-variegatus has silvery-tinted leaves; P.
coronarius flore-pleno, full double flowers; and P. coronarius Keteleeri
flore-pleno is the best double-flowered form in cultivation.
P. GORDONIANUS, an American species (1839), is a well-known and
beautiful shrub, in which the flowers are usually double the size of
those of the common species, and which are not produced till July, while
those of P. coronarius appear in early May.
P. GRANDIFLORUS (_syns P. floribundus, P. latifolius_ and _P.
speciosus_).--Southern United States, 1811. This has rotundate,
irregularly-toothed leaves, and large white, sweetly-scented flowers
produced in clusters. This forms a stout bush 10 feet high, and as much
through. There are two varieties, P. grandiflorus laxus, and P.
grandiflorus speciosissimus, both distinct and pretty kinds.
P. HIRSUTUS.--North America, 1820. Another handsome, small-flowered
species, of dwarf growth, and having hairy leaves.
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