Nymphaea jacobsii subsp. toomba is a subspecies of Nymphaea jacobsiiNymphaea jacobsii subsp. toomba Hellq. (n.d.-f). WFO Plant List. Retrieved June 24, 2025, from https://wfoplantlist.org/taxon/wfo-0001361944-2025-06?page=1 endemic to Queensland, Australia.Nymphaea jacobsii subsp. toomba Hellq. (n.d.-b). Catalogue of Life. Retrieved June 24, 2025, from https://www.catalogueoflife.org/data/taxon/5JXPT
Description Vegetative characteristics Nymphaea jacobsii subsp. toomba is a rhizomatous, annual or perennial herbNymphaea jacobsii subsp. toomba Hellq. (n.d.-c). Atlas of Living Australia. Retrieved June 24, 2025, from https://bie.ala.org.au/species/https://id.biodiversity.org.au/node/apni/2905142 with a globose to elongate, up to 25 cm long rhizome. The suborbicular to broadly elliptic, petiolate, stipulate leaf with a finely dentate margin is 29–75 cm long, and 27–35 cm wide. Generative characteristics The relatively smaller, blue flowers have green, 4.2–8.5 cm long, and 4.2–6.0 cm wide sepals with an obtuse apex. The 12–20 lanceolate, white and blue petals with an acute apex are 5–8.5 cm long, and 2.5–4 cm wide. The androecium consists of 150–300 yellow stamens. The gynoecium consists of 12–25 carpels. The globose, (2.5–)4–7 cm wide fruit bears large, hairy, ovoid, 2.6–5(–6) mm long, and 2–3 mm wide seeds.
Taxonomy It was described by Carl Barre Hellquist in 2011.Jacobs, S. W., & Hellquist, C. B. (2011). New species, possible hybrids and intergrades in Australian Nymphaea (Nymphaeaceae) with a key to all species. Telopea, 13(1-2), 233-243.Nymphaea jacobsii subsp. toomba Hellq. (n.d.-e). Plants of the World Online. Retrieved June 24, 2025, from https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:77111426-1 The type specimen was collected by S. Jacobs and C. B. Hellquist in 'Toomba' Creek, North Kennedy, Queensland, Australia on the 11th of June 2007.Nymphaea jacobsii subsp. toomba Hellq. (n.d.-d). International Plant Names Index. Retrieved June 24, 2025, from https://www.ipni.org/n/77111426-1 It is placed in the subgenus Nymphaea subg. Anecphya. Etymology The subspecific epithet toomba refers to "Toomba", the property of Ernest and Robyn Bassingthwaighte, and honours their friendship with Hellquist.Nymphaea jacobsii subsp. toomba Hellq. (n.d.). Australian National Species List (auNSL). Retrieved June 24, 2025, from https://id.biodiversity.org.au/name/apni/231725
Distribution It is endemic to Queensland, Australia.
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