OF ORNAMENTAL PERENNIALS. 
3.— DENTARIA DIPHYLLA, Michaum. AMERICAN PEPPERWORT. 
71 
Engratiho. — Bot. Mag. t. 1465. 
Specific Charactea. — Caulino leaves 2, alternate, on short stalks, 
cut into three ovate-lanceolate, grossly and unequally serrated lobed 
segments. (G. Don.) 
Description, &c. — ^This plant growa chiefly in Canada, but it is found in other parts of North America. 
The inhabitants dry the root and use it instead of mustard or pepper. The flowers are white, tinged with pint, 
and the leaves are large. It is a hardy plant, and may be propagated by dividing its roots. 
. OTHER SPECIES OF DENTARIA. 
D. POLYPHYLLA, Dee. 
A native of Hungary, introduced in 1817. The flowers are striped. 
D. ENNEAPHYLLA, Deo. 
A native of Austria, with white flowers, introduced in 1656. 
D. MAXIMA, Dec. 
A species with large white flowers ; a native of North America, introduced in 1823. 
D. LACINIATA, Dec. 
The flowers are white. The species is a native of North America, and was introduced in 182B. 
Besides the above, there are several other species ; several of which are natives of Siberia. There are also 
some other genera nearly connected with the above, which are not worth enumerating, because they are not 
sufficiently ornamental. 
GENUS V. 
AUBRIETIA, Adams. THE AUBRIETIA. 
Lin. Syst. TETRADYNAMIA SILICULOSA. 
Generic Character. — Silicle oblong, with convex valves. Seeds I entire or angularly toothed leaves, which are covered with simple and 
not margined. Calyx bisaccate at the base. Petals entire. Smaller branched hairs. Racemes opposite the leaves and terminal, lax, fine- 
•tameus toothed. Small evergreen pilose herbs, with ovate or oblong, | flowered. Pedicels filiform, bractlcss. (G.Don.) 
Description, &c. — Aubrietia is named in honour of M. Aubriet, a famous French botanical draughtsman. 
The species are dwarf hardy plants. 
1.— AUBRIETIA DELTOIDEA, Deo. THE SPREADING AUBRIETIA. 
SysoNYHEs. — Alyssum deltoideum, Lin.; Leucojum saxatile, I Enrravimgs. — Bot. Mag. t. 126 ; and our yty. 8 in Plate 17. 
Sanks ; Farsetia deltoidea, R. Br. ; Vesicaria deltoidea, Pair. \ Specific Character. — Pedicels longer than the calyx. (G. Don.) 
Description, &c. — This plant, though not remarkably handsome, has the advantage, if we may call it so, of 
beginning to flower in March, and continuing to April or May, and if in a favourable situation, during most of 
the summer. Being properly a rock plant, with little care it will form a neat tuft on rockwork without encroaching 
on the others. It may be easily propagated by dividing its roots in autumn, or by cuttings. It is very hardy. 
It is a native of Naples, and was introduced in 1710. 
