Achenes cylindrical-oblong; pappus copious, soft and capillary.
Further, the hairs which constitute the pappus may be simple or feathered.
The hairs of the pappus are not surrounded at the base by a little cup, but by a few minute and distinct scales.
The pappus in this genus is very short, and it is scaly rather than feathery.
pappus of copious straw-color or brownish and rough capillary bristles.
Achenes 10-ribbed; pappus of stout bristles, chaffy-dilated at the base.
The former says, that, like most others of the same kind, the seeds were covered by a sort of wool (pappus).
Achenes obovate, flattened, wingless, and without any pappus.
Calyx-tube coherent with the ovary, the limb cup-shaped, without a pappus.
Name from , to be deficient, alluding to the absence of pappus.
Plural pappi (pāp'ī)
A structure made of scales, bristles, or featherlike hairs that is attached to the seeds (called cypselae) of plants of the composite family and that aids in dispersal by the wind. The downy part of a dandelion or thistle seed is a pappus. The pappus is derived from a modified calyx.