It is a stipitate licea, or a lid-covered cribraria; perhaps nearer the former.
A very well marked species, easily recognized, at least when stipitate, by its remarkable discoid or lenticular sporangia.
Sporangia globose or ovoid to oblong and cylindrical, stipitate; the wall very thin and fragile, soon disappearing.
Sporangium oblong-ovoid, stipitate; the calyculus small, thin, smooth.
The sporangia in the same cluster are stipitate and sessile, ovoid and spherical.
Sporangium globose, stipitate; the wall brown or blackish, soon disappearing.
Receptacle somewhat produced between the petals and stamens, and bearing a gland behind the stipitate ovary.
This plant appears to be generically distinct from Erigeron, particularly in its stipitate pappus.
The sporophores are inclined to be simple, stipitate and dendroid.
The aerial fructification and stipitate habit of the higher forms tends in the same direction.