Achnopogon

• Authority

  Carlquist, Sherwin. 1957. Anatomy of Guayana Mutisieae. Mem. New York Bot. Gard. 9 (3): 441-476.

• Family

  Asteraceae

• Scientific Name

  Achnopogon

• 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.