TETRADYNAMIA.  ———sag89 
. _Nectariferous glands, which differ in different genera, 
ow near the stamens, and are mostly fixed at the 
ase of the shorter filaments, which are generally bent 
outwards, to prevent the compression of the eiids, 
_ and therefore appear shorter than the others. 
Pist. Germen superior, daily growing taller. Style. the 
length of the longest stamens, but in some genera there 
is no style. Smmit blunt. _ 
S. Vess.- Pod with 2 valves, often with @ cells, opening 
from the base to the point. Partition projecting be- 
yond the points of the valves, and occupying the place 
of the style. 
SeEps roundish, inclining downwards, lodged in the par- 
tition lengthwise and alternately. Receptacle strap- 
shaped, surrounding the partition, “and lodged in the 
seams of the seed-vessel, 
Oss. This class is truly natural, and has been considered 
as such by all the best systematic writers, nevertheless, they 
have thrown into it one or more genera that do not naturally 
_ belong to it; but this we have avoided. The plants of this 
Class are universally called Anti-scorbutic: their taste is acrid 
_and watery ; they lose most of their virtues by drying. None 
of them are poisonous. _ Sp ve 
- In moist situations, and wet seasons, they are most acrimo- 
nious. Thus the CocHLEaRia Armoracia (Horse-radish) grow- 
ing near water, is so very acrid, that it can scarcely be used ; 
and Brassica Rapa, (the Turnep) whose root in a dry sandy 
soil is so succulent and sweet, in wet stiff lands is hard and 
acrimonious. 
* 
TETRADYNAMIA. (4 Stamens longer.) 
~ Sizicunosa. (Pouch, or broad Pod.) 
Myagrum, __—‘Felila. Thlaspi. | 
Binds. . Subularia. =~ hi ae \ 
Crambe, Draba. Lleris 
Ksatis, _ Lepidium. 
= - Stzravosa. (long Pod.) 
Dentaria. Cheiranthus. Brassica. 
C aa dam rine. : He. iS. : Sin ° 
Sisymbrium. ae “Raphanus. 
urysimum, Turritis. 
