352 Introductory View of the 
from eleven to twenty stamens, affixed to the receptacle. The 
twelfth class, Icoséndria, has twenty or more stamens, affixed 
to the calyx; and the thirteenth class, Polydndria, has from 
twenty to a thousand, affixed to the receptacle. 
The eleventh class, Dodecdéndria, has six orders, distin- 
guished, as in the former classes, by the number of pistils : in 
the first order, Monoginia, we have two British plants, asara- 
bacca, the pulverised leaves of which act as a powerful snuff; 
and loosestrife, Zythrum (from two Greek words signifying 
black blood, in reference to the colour of the flowers) Salicaria 
(willow-like ; from saliz, a willow), a very handsome plant, 
not unfrequently Salevated in gardens. Among the more 
important exotics is the mangosteen (Garcinia Mangostana), 
the fine fruit of which is equally delicious, refreshing, and 
salutary. In the second order, Diggnia, we have but one 
British plant, agrimony, fended ly much used in medicine ; 
and of late years a principal ingredient in most of the com- 
pounds called British tea. ‘The sweet mignonette, so general 
a favourite, is a species of Reseda, a genus belonging to the 
third order, Trigynia. We have a British species, called wild 
mignonette ; but it is deficient in the principal charm of the 
exotic plant, its fragrance. Another British species is used 
for dyeing yellow. The common house-leek, frequently seen 
on the walls and roofs of cottages, is in the sixth order, 
Dodecagiynia. 
The twelfth class, Zcoséndria, has three orders: the first, 
Monogynia, includes the plum, cherry, apricot (Prunus) ; 
the peach, nectarine, almond (dmy edalus), the pomegranate, 
the clove tree, the allspice tree, the myr tle, the syringa, and 
the extensive and very curious genus Cactus; of which many 
of the species are interesting, and some singularly beautiful. 
The second order consists of plants furnished with from two 
to five pistils (the number varying, not only on the same 
species, but sometimes on the same plant), and is styled Di- 
Pentagynia. It comprehends the apple and pear in all their 
varieties (Pyrus); the quince, the medlar, the hawthorn, and 
that large and brilliant genus, Mesembryanthemum, &c. &c. 
The order Polyginia is possessed of the raspberry, blackberry, 
Xc. (Rubus) ; the strawberry (Fragaria), the beautiful genus 
Rosa, &e. 
The class Polydndria was formerly divided into seven 
orders. Sir J. E. Smith recommended. that they should be 
reduced to three; the pistils being so variable in number as 
to cause much confusion tono purpose. In his Hnglish Fora, 
therefore, he has thrown several orders into one, which, the 
number five mostly prevailing, he calls Pentagynia; but 
