The pollen of Macroclinidium has a particular exine type, and some species of Ainsliaea have tricolpate
pollen, which is unusual in Asteraceae with the Mutisia or the Ainsliaea exine type (Telleria et al.
Pollen spheroidal to prolate, medium to large size, tricolpate
The unusual occurrence of tricolpate
pollen within Mutisieae (Asteraceae).
A survey of tricolpate
(eudicot) phylogenetic relationships.
The implications of tricolpate
pollen in Gunnera have never been
The primitively microreticulate, tricolpate
pollen of basal Saxifragaceae developed the bulging mesocolpia distinctive of Gunnera (cr.
from Scabiosaepollenites in being tricolpate
, whereas the latter is
Pollen usually tricolpate
to tricolporate, in tetrahedral tetrads, but these sometimes reduced, or occasionally in monads, sometimes associ ated with viscin threads.