Trithuria filamentosa
| Trithuria filamentosa | |
|---|---|
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Order: | Nymphaeales |
| Family: | Hydatellaceae |
| Genus: | Trithuria |
| Species: | T. filamentosa
|
| Binomial name | |
| Trithuria filamentosa | |
| |
| Trithuria filamentosa is endemic to Tasmania, Australia[1] | |
| Synonyms[1] | |
|
Hydatella filamentosa (Rodway) W.M.Curtis | |
Trithuria filamentosa is a species of aquatic plant in the family Hydatellaceae endemic to Tasmania, Australia.[1]
Description
[edit]Vegetative characteristics
[edit]It is an annual or perennial, diminutive, aquatic herb[2] with elongate, 0.7–1.5 mm wide, erect, sympodial rhizomes with adventitious roots.[3] The pale green, linear, acute leaves[4] are 1-2 cm long.[5]
Generative characteristics
[edit]It is a monoecious species with mostly unisexual reproductive units ("flowers"), but more rarely with bisexual reproductive units.[6][7] The male reproductive units, which are fewer in number than the female ones,[2][7] consist of 2–4, lanceolate, 3–5 mm long bracts, as well as 4–6 stamens. The stamens have red to purple, 2 mm long anthers, and 6 mm long filaments.[7] The female reproductive units consist of 2–4(5) bracts,[6] as well as up to 20 carpels. The elliptical-ovoid, fruit is indehiscent.[2] The seeds are smooth.[6] It may be reproducing apomictically, or may predominantly rely on self-pollination.[8] Flowering and fruiting occurs from December to April.[2][9]
Cytology
[edit]The chloroplast genome is 180562 bp long.[10]
Distribution
[edit]It is endemic to Tasmania, Australia.[1]
Taxonomy
[edit]It was described by Leonard Rodway in 1897.[4] The lectotype was collected by Rodway in Broad River, Tasmania, Australia in December 1896.[11][6] It is placed in the section Trithuria sect. Hydatella.[8]
Etymology
[edit]The specific epithet filamentosa, from the Latin 'filum' for thread, means thread-like.[12][13] The stamens have long, filiform filaments.[4]
Ecology
[edit]It occurs in marshes, pools on mud flats along rivers,[4] lakes, tarns,[2][5] and stream margins.[2]
References
[edit]- ^ a b c d e "Trithuria filamentosa Rodway". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 3 November 2024.
- ^ a b c d e f Duretto MF (2011) 1 Hydatellaceae, 2011:1. In MF Duretto (Ed.) Flora of Tasmania Online. 4 pp. (Tasmanian Herbarium, Tasmanian Museum & Art Gallery: Hobart). www.tmag.tas.gov.au/floratasmania
- ^ Sokoloff, D. D., Remizowa, M. V., Briggs, B. G., & Rudall, P. J. (2009). Shoot architecture and branching pattern in perennial Hydatellaceae (Nymphaeales). International Journal of Plant Sciences, 170(7), 869-884.
- ^ a b c d Rodway, Leonard 1897, On Trithuria filamentosa, Papers & Proceedings of the Royal Society of Tasmania, pp. 47-48.
- ^ a b University of Tasmania. (n.d.). Trithuria filamentosa. Key to Tasmanian Vascular Plants. Retrieved November 6, 2024, from https://www.utas.edu.au/dicotkey/dicotkey/aquat_mono/gHydatella.htm
- ^ a b c d Sokoloff, D. D., Remizowa, M. V., Macfarlane, T. D., & Rudall, P. J. (2008). Classification of the early‐divergent angiosperm family Hydatellaceae: One genus instead of two, four new species and sexual dimorphism in dioecious taxa. Taxon, 57(1), 179-200.
- ^ a b c D.A.Cooke, Hydatellaceae, Flora of Australia 45: 1–5 (1987).
- ^ a b Smissen, R. D., Ford, K. A., Champion, P. D., & Heenan, P. B. (2019). Genetic variation in Trithuria inconspicua and T. filamentosa (Hydatellaceae): a new subspecies and a hypothesis of apomixis arising within a predominantly selfing lineage. Australian Systematic Botany, 32(1), 1-11.
- ^ Trithuria filamentosa Rodway. (n.d.). Atlas of Living Australia. Retrieved November 6, 2024, from https://bie.ala.org.au/species/https://id.biodiversity.org.au/node/apni/2907592#ausTraits
- ^ Gruenstaeudl, M., Nauheimer, L., & Borsch, T. (2017). Plastid genome structure and phylogenomics of Nymphaeales: conserved gene order and new insights into relationships. Plant systematics and evolution, 303, 1251-1270.
- ^ Lectotype of Trithuria filamentosa Rodway [family HYDATELLACEAE]. (n.d.). JSTOR. Retrieved November 3, 2024, from https://plants.jstor.org/stable/10.5555/al.ap.specimen.nsw148485
- ^ Eggli, U., & Newton, L. E. (2004). Etymological Dictionary of Succulent Plant Names. p. 83. Springer Science & Business Media.
- ^ Species: Stichosiphon filamentosus. (n.d.). LPSN - List of Prokaryotic Names With Standing in Nomenclature. Retrieved November 6, 2024, from https://lpsn.dsmz.de/species/stichosiphon-filamentosus