Monographs Details: Achnopogon
Authority: Carlquist, Sherwin. 1957. Anatomy of Guayana Mutisieae. Mem. New York Bot. Gard. 9 (3): 441-476.
Discussion:The monotypic genus Achnopogon shows considerable similarity to Gongylolepis
in its pollen grain structure. However, the grains are not sphaeroidal, the
shape being best described as prolate sphaeroidal (fig. 98 A). As shown in figure
98 B, the thick exine, with a particularly prominent inner ektexine, is reminiscent
of Gongylolepis. The rods of the inner ektexine (fig. 98 C) are smaller
than those of the large-grained species of Gongylolepis. The spine dimensions
are likewise smaller. Except for shape, pollen grains of Achnopogon are very
close to those of Gongylolepis fruticosa.