TETRANOUI A. 
585 
Of the fourth class Tetrandria. This class consists of such 
plants as bear hermaphrodite flowers; furnished with four stamina. 
The flowers of this class may be known from those of the fourteenth 
by this distinction, that the stamina are of an equal length : 
whereas in those of the fourteenth, which have four stamina like- 
wise, there are two long and two short. The orders of this class 
are three, viz. 
Order I. MONOGYNIA, comprehending such plants as have 
but one style. This order contains seventy genera, distinguished 
into, 1. Such as have aggregate flowers, properly so called, with the 
seeds single and naked; of which there are seven, viz. Protca, 
Silver tree, Cephalanthus, Button Wood, Globularia, Blue Daisy, 
Dipsacus, Teazel, Knautia, Scabiosa, Scabious, and Allionia. 2. 
Such as have their flowers monopetalous on a double fruit, and the 
style bifid, of which there arc twenty,* viz. Hedyotis, Spermaeoce, 
Button Weed, Sherardia, Little Field Madder, Asperula, Wood- 
roof, Diodia, Knoxia, Manettia, Houstonia, Galium, Lady’s bed 
straw, Crucianella, Petty Madder, Rubia, Madder, Scabrita, Ein- 
bothrium, Hydrophylax, Hartogia, Acaena, Bancksia, Orixa, Othera, 
and Skimmia. 3.” Such as have monopetalous flowers otherwise 
circumstanced ; of which there are twenty, viz. Siphonanthus, Ca- 
tesbrea, Lily Thom, Ixora, Pavetta, Petesia, Mitchella, Callicarpa, 
Johnsonia, Aquartia, Polypremum, Carolina Flax, Pensea, Blaeria, 
Buddleja, Exacum, Plantago, Plantain, Scoparia, lthacoma, Cen- 
tunculus, Sanguisorba, Greater Wild Burnet, Cissus, and JSgiphila. 
4, Such as arc tetrapetalous and complete :f of which tliere are 
twelve, viz. Epimedium, Barren Wort, Cornua, Dogwood or Cor- 
nelian ' Cherry, Fagara, Tomex, Amannia, Ptelea, Shrub Trefoil, 
Ludwigia, Oldenlandia, Isnardia, Santalum, Saunders, Trapa, Water 
Caltrops, and Samara. 5. Such as are incomplete ; X of which there 
are eleven, viz. Dorstenia, Contrayerva, Ekeagnus, Wild Olive, 
Crameria, Rivina, Sulvadora, Campkorosma, Alchemilla, Ladies’ 
Mantle, Struthiola, Cometes, and Sirium. 
Order II. D1GYNIA, comprehending such plants as have two 
styles. This order contains nine genera, viz. Aphanes, Parsley 
Piert, Cruzita, Bufonia, Hamamelis, Witch Mazel, Cuscuta, Dodder, 
Hype’coum, Galopina, Gomozia, and Gonocatpus. 
Order III. TETRAGYNIA, comprehending such plants as 
have four styles. This order contains seven genera, viz. Ilex, 
Holley, Coldenia, Potamogiton, Pond Weed, Ituppia, Sagina, 
Purl-wort, Myginda, and Tillaea. 
Of the fifth class, Pentandria. This class consists of such 
plants as bear hermaphrodite flowers, furnished with five stamina. 
The orders are six, viz. 
* These are Stellatss, Starry Plants, of Ray. They are held to he 
astringent ant! diuretic. 
-t Not wanting either calyx or corolla, 
t Calyx or corolla wanting. 
Vor.. II. 8 c 
