Trithuria sect. Trithuria is a section within the genus Trithuria native to Australia.
Description
The dehiscent fruit is a apocarpous monomerous follicle, which splits into three parts. The strongly sculptured seed does not have a thick cuticular layer.
Taxonomy The type species is Trithuria submersa Hook. f.
Species It has three species:
Etymology The section name Trithuria is derived from the Greek words τρεις treis meaning "three", and θυρις thyris meaning "window". It references the dehiscence of the fruit.
Distribution Its species occur in Australia (Southwest Western Australia, Tasmania, and Southeast mainland Australia).
Phylogeny Trithuria sect. Trithuria split from Trithuria sect. Hydatella about 16 million years ago in the Early Miocene.
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