SYNOPSIS OF THE GENERA. 
31. Dro'ris, | Page 1072.] Jnvoluerum hemispheerical, im- 
bricated. Florets all tubular, perfect, five toothed, con- 
tracted in the middle, auriculated or saccated on one side 
at the base. Receptacle convex, paliaceous, its scales 
fringed. Fruit crowned by the lower persistent half of 
the corolla, in the place of pappus. 
OrvER II. PonyGAMiIA SUPERFLUA. 
( Florets of the centre with tubular corollas perfect, (having 
stamens and pistils), those of the circumference imperfect, 
(having pistils only), the corollas ligulate, and forming a 
ray. 
1. Pappus hairy, receptacle naked. 
A. Involucrum imbricated, of numerous scales. 
32. I'nuna, [Page 1073.] Involucrum imbricated. Florets 
of the ray ligulate, imperfect. Anthers bristle pointed, 
at the base. Receptacle naked. Pappus hairy, in a 
single row. 
33. Punica'r1A, [Page 1075.]  Jnvolucrum  imbricated. 
florets of the ray ligulate, imperfect. Anthers bristle 
pointed at the base. Receptacle naked. Pappus double, 
the outer short, membranous, cup-shaped, toothed or 
crenated on the margin, the inner of elongated hairs. 
34. A'sTER, [Page 1076.] Involucrum imbricated, the scales 
linear, acute. lorets of the ray ligulate, imperfect, 
usually purple, those of the disk tubular, perfect, yellow. 
Receptacle naked. Frutt compressed. Pappus hairy, 
in many rows. 
35. Ert'Geron, [Page 1077.| Jnvolucrum imbricated, with 
linear scales, very numerous. lorets of the ray imper- 
fect, with very narrow linear ligulate corollas. FRecep- 
tacle naked. Pappus hairy, rough. 
36. Soxipa’Go, [Page 1079.] Lnvolucrum imbricated. Foret 
of the ray ligulate, imperfect, yellow, about five in num- 
ber. Receptacle naked. Fruit roundish. Pappus 
hairy, in a single row. 
B. Involucrum cylindrical. 
37. Crner'arta, [Page 1080.] Involucrum cylindrical, of 
numerous erect equal seales. lorets yellow, those of 
VoL. III. D 
