Monographs Details: Gongylolepis
Authority: Carlquist, Sherwin. 1957. Anatomy of Guayana Mutisieae. Mem. New York Bot. Gard. 9 (3): 441-476.
Discussion:As the dimensions of table 1 and the drawings of G. pedunculata (fig. 96 A, B)
show, most species of Gongylolepis are markedly different from all other taxa
studied here. With the exception of G. fruticosa, all the species of Gongylolepis
have larger grains, sphaeroidal in shape, with thicker exine and longer spines
than pollen grains of the other genera. As seen in figure 96 B, the two layers of
the ektexine are particularly well developed, the inner showing relatively large
rods (seen in a section tangential to the grain, fig. 96 C). Gongylolepis fruticosa
(fig. 97 A, B) has a decidedly diminished expression of these characters, but is
still distinguishable from grains of other taxa of this study by virtue of the sphaeroidal
shape and prominent spines.