Monographs Details: Glossarion
Authority: Carlquist, Sherwin. 1957. Anatomy of Guayana Mutisieae. Mem. New York Bot. Gard. 9 (3): 441-476.
Discussion:Despite the anomalous corolla form of the monotypic genus Glossarion, pollen
grains of this plant (fig. 95 A-C) are not unlike those of other genera considered
here, since they have a sphaeroidal shape and bear short, broad spines. There is
little conclusive evidence for placing Glossarion in the stenopadoid or gongylolepoid
line on the basis of pollen alone. The very fine pattern of the inner ektexine
(fig. 95 C) resembles that of Stenopadus and its allies. Except for Quelchia
and Stifftia, however, none of those genera has such a thick exine. A feature not
seen in pollen of any other genera studied here besides Glossarion is the possession
of a third ektexine layer. This layer occurs between the two ektexine layers
comparable to those found in the other pollen described (fig. 95 B). It was not possible
to determine to which of these ektexine layers this deep-staining middle
could be referred.