336 AN INTRODUCTION 
dago, Inula, Cineraria, Arnica, Doronicum, 
Perdi.ium, Helenium, Bellis, Leyfera, Tagetes, 
Peétis, Chryfanthemum, Matricaria, Anacy- 
clus, Anthemis, Achillea, Tridix, Zinnia, Ver- 
befina, Sigesbeckia, Bupthalmum, Eclipta, Bel- 
' tum, Amellus, Unxia, and Mutifia. 
Orper Ill. POLYGAMIA FRUSTRA- 
NE A, comprehending fuch Plants as have 
the Florets of the Dz/& Hermaphrodite, and 
thofe of the Radius neuter. This Order 
contains nine Genera, all radiate, viz. Heli- 
anthus, Rudoeckia, Coreopfis, Gorteria,Ofmites, 
Zorgea, Centaurea*, Sclerocarpus, and D7- 
delta. 
Orper IV. POLYGAMIA NECES- 
S ARIA, comprehending fuch Plants as have 
Flowers of the Dz/ male, and thofe of the 
Radius female. This Order contains four- 
teen Genera, moft of which are radiate, viz. 
Milleria, Silphium, Chryfogonum, Melampo- 
dium, Calendula, Aréotis, Ofteofpermum, 
Othonna, Pclymnia, Eriocepbalus, Filago, 
Micropus, Baltimora, and Hippia. 
* The Corollulz of the Centaurea, are all tubulofe, but 
thofe of the Radius differ from thofe of the Diik, which 
brings it within the Definition of a radiate Flower; 
however Linnzus, in his Defcription of the Centaurea, in 
the Genera Plantarum, has not called the Corolla radiate, 
but iabuloja difformis, tubulofe of different Forms. 
ORDER 
