cf. Endressistemon sp. 1

Text-fig. 29a, b

Description and remarks. The material includes a pair of compressed stamens resembling the staminate structures of Endressistemon cateficensis described above.The stamens are up to 0.8 mm long including the apical projection, and about 0.3 mm broad. The apical projection is longer than the thecae, about 0.45 mm long, and tapers to a long, pointed tip (Text-fig. 29a). The two stamens adhere together closely, but their bases are missing, and whether the stamens had separate distinct bases or a shared base, or whether the base was lost during fossilization, is not known. Anther dehiscence is longitudinal.

Pollen grains observed in situ (Text-fig. 29b) are monocolpate, semitectate-reticulate, circular in equatorial view, about 9 µm in diameter. The aperture is long, reaching almost to the equator, and the aperture margin is distinct. The reticulum is homobrochate (Text-fig. 29b).

Affinity and other occurrences. The stamens and in situ pollen are closely similar to those of Endressistemon cateficensis described above, but the pollen sacs are more rounded and the apical projection is much longer. Because of the missing stamen base it is uncertain whether the two taxa are closely related.