DISEASES OF PLANTS. 863 
pr astyle. 3. After they have blossomed, nothing 
remains, and no fruit whatever can be traced. 
4, Lastly, no common receptacle is to be found. 
| § 339. 3 
Compound flowers become full in a peculiar man- 
ner. Flores semiflosculosi, when they grow mature, 
havea very long germen and a pappus, which is as 
long again as the germen, ‘The linguiform corol, 
style and stamens are natural, but the stigma is 
divided, and of the same length with the corol. © 
Such deformities occur in Scorzonera, Lapsana, and 
‘Tragopogon. 
By these characters, and that they never bear ripe 
seeds, they may be distinguished from natural semi- 
floscular flowers. 
§ 340. 
Flores radiati. Radiated flowers, grow full in a 
two-fold manner, either by the disc or centre, (dis- 
cus), or by the rays, (radii). . If the disk is full, it 
annihilates the radii altogether, and the tubular co- 
rols grow longer, so as to get almost a club-shaped 
form, and -in this case the stamens are entirely lost. 
Instances are, Matricaria, Bellis, Tagetes, &c. In 
the same manner, likewise, compound flowers be- 
come full, which naturally consist of tubular florets, 
for instance, Carduus. 
From natural flowers of the same external ap. 
pearance, full flowers may be easily distinguished 
py the longer corol, and by the want of seeds. 
It 
