M0N0DELPI1IA. 
397 
lengthwise into the dissepiment. The receptacle linear, surrounding 
the dissepiment, and immersed in the sutures of the pericarpium 
The orders are two, viz. 
Order 1 . SILICULOSA, comprehending those plants whose 
pericarpium is a silicula. This order contains fourteen genera, viz. 
Myagrum, Gold of pleasure, Vella, Spanish Cress, Anastatica, 
Rose” of Jericho, Subularia, Rough-leaved Alysson, Draba, Whitlow 
Grass, Lepidium, Dittander, or Pepper-wort, Thlaspi, Mithridate 
Mustard, or Treacle Mustard, Cocldearia, Scurvy-grass, or Spoon- 
wort, Iberis, Candy-tuft, or Sciatic Cress, Alyssum, Mad-wort, 
Peltaria, Clvpeola, Treacle Mustard, Biscutella, Buckler Mustard, 
and Lunaria, Moon-wort, Satin Flower, or Honesty. 
Order II. S1LIQUOSA, comprehending those plants whose 
pericarpium is a siliqua.* This order contains eighteen genera, viz. 
Ricotia, Dentaria, Tooth-wort, Cardamine, Lady’s Smock, Sisym- 
brium. Sisymbrium, Erysimum, Hedge Mustard, Cheiranthus, 
Stock July-flower, Hcliophola, Hesperis, Dames Violet, Rocket, or 
Queen’s July-flower, Arabis, Bastard Tower Mustard, Turritis, 
Tower Mustard, Brassica, Cabbage, Siuapis, Mugtard, Raphames, 
Raddish Bunias, Isatis, Woad, Crambe, Sea-cabbage, Cleome 
Bastard Mustard, and Chamira. 
Of the sixteenth Class, Monodelputa. 
This class consists of such plants as hear hermaphrodite flowers, 
furnished with one set of united stamina. This class consists of 
eight orders. The characters of the flowers are as follows. 
Characters of the Class Monodelphia. 
CALYX. — A perianthum always present, persisting, and in most 
genera double. 
COROLLA. — Pentapetalous, the petals heart-shaped; the sides 
of which lap each one over the next, contrary to the motions of the 
sun. . . 
STAMINA. — The filaments united below, but distmet upwards 
if there be more than one.f The exterior ones shorter than the 
interior. The antherse incumbent. 
P1STILLUM. — The receptacle of the fructification prominent lit 
the centre of the flower. The germen erect, surrounding the top 
of the receptacle in a jointed ring. The styles arc all umted below 
in one substance with the receptacle; but divided above into as 
many threads as there are germen. The stigma spreading and thin. 
PERICARPIUM. — A capsule divided into as many loculaments 
as there are pistilla. Its figure various in the different genera. 
SEEDS.— Kidney-shaped. 
* See the table of botanical terms at, the end of the chapter. 
+ In this class the calyx is of great moment, for distinguishing the 
genera, and fixes the limits with certainty. They were formerly distin- 
guished by the fruit ; which not being found sufficient, recourse was had to 
the leaves' of the plant. The plants of this class are esteemed to be excel- 
lent, and mulilleginous 
