Trithuria sect. Hamannia
| Trithuria sect. Hamannia Temporal range: Upper Miocene – Recent[1]
| |
|---|---|
| Scientific classification | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Order: | Nymphaeales |
| Family: | Hydatellaceae |
| Genus: | Trithuria |
| Section: | D.D. Sokoloff, Iles, Rudall & S.W. Graham[2] |
| Type species | |
| Trithuria lanterna D.A. Cooke[2]
| |
| Species | |
Trithuria sect. Hamannia is a section within the genus Trithuria[2] native to Australia and India.[3]
Description
The dehiscent,[2][3] elliptical,[3] apocarpous, monomerous follicle fruit[4] has three longitudinal pericarp ribs.[2] The fruit does not have papillae, doesn't have distinct epicuticular wax deposits, and the apex does not have thickened endocarp cells.[2] The fruit apex also does not have a distinct beak.[3] The fruit splits into three parts along the longitudinal ribs.[4] The smooth seed has a thick cuticle. The sheathless cotyledon is strongly reduced.[2]
Taxonomy
It was described by Dmitry Dmitrievich Sokoloff, William J. D. Iles, Paula J. Rudall, and Sean W. Graham in 2012 with Trithuria lanterna D.A. Cooke as the type species.[2]
Species
- Trithuria polybracteata D.A.Cooke ex D.D.Sokoloff, Remizowa, T.D.Macfarl. & Rudall
- Trithuria konkanensis S.R.Yadav & Janarth.
- Trithuria lanterna D.A.Cooke
Etymology
The section name Hamannia honours Ulrich Hamann who worked on[2] and described the family Hydatellaceae.[6]
Distribution
Its species occur in India (Western Ghats) and Australia (tropical Western Australia, tropical northern Australia).[3]
Phylogeny
Trithuria sect. Hamannia split from Trithuria sect. Altofinia about 6 million years ago in the Upper Miocene.[1][7]
References
- ^ a b Iles, W. J., Lee, C., Sokoloff, D. D., Remizowa, M. V., Yadav, S. R., Barrett, M. D., ... & Graham, S. W. (2014). Reconstructing the age and historical biogeography of the ancient flowering-plant family Hydatellaceae (Nymphaeales). BMC evolutionary biology, 14, 1-10.
- ^ a b c d e f g h i j Iles, W. J., Rudall, P. J., Sokoloff, D. D., Remizowa, M. V., Macfarlane, T. D., Logacheva, M. D., & Graham, S. W. (2012). Molecular phylogenetics of Hydatellaceae (Nymphaeales): Sexual‐system homoplasy and a new sectional classification. American Journal of Botany, 99(4), 663-676.
- ^ a b c d e Sokoloff, D. D., Remizowa, M. V., Macfarlane, T. D., Conran, J. G., Yadav, S. R., & Rudall, P. J. (2013). Comparative fruit structure in Hydatellaceae (Nymphaeales) reveals specialized pericarp dehiscence in some early–divergent angiosperms with ascidiate carpels. Taxon, 62(1), 40-61.
- ^ a b Romanov, M. S., Bobrov, A. V. C., Iovlev, P. S., Roslov, M. S., Zdravchev, N. S., Sorokin, A. N., ... & Kandidov, M. V. (2024). Fruit and seed structure in the ANA‐grade angiosperms: Ancestral traits and specializations. American Journal of Botany, 111(1), e16264.
- ^ Iles, W. J. D. (2013). The Phylogeny and Evolution of Two Ancient Lineages of Aquatic Plants (Doctoral dissertation, University of British Columbia).
- ^ Hamann, U. (1976). Hydatellaceae—a new family of Monocotyledoneae. New Zealand Journal of Botany, 14(2), 193-196.
- ^ Lin, Q. (2014). Using a low-copy nuclear gene (phosphoglycerate kinase; PGK) to explore the phylogeny of the aquatic plant family Hydatellaceae (Nymphaeales) (Doctoral dissertation, University of British Columbia).